CCA Rhapsody

Introduction!
Hello friends!
Today in the review we’ll talk about a new hybrid product from CCA and their model is called Rhapsody!
The headphones come in a very small black box where there is only the company logo, and the technical characteristics of this model are indicated on the side, and these headphones received 2 dynamic drivers with a diameter of 8 mm, and 4 armature drivers, and the sensitivity is 102 dB, and they received a impedance from 15 to 20 ohm.

Let's take a look at what's included!
And here everything is actually simple, we get headphones that look pretty good to me, although the metal front panel is easily soiled and collects fingerprints, and has a large hole with a mesh, and the inscription Rhapsody on both headphones.

And the inner panel here is made of translucent resin and through it you can very clearly see the dynamic drivers and small reinforcements here, there are no holes for compensation as such that we are used to here, so I have seen a small vacuum effect with some ear pads, but it is not so scary and it is quite easy to fix with the right selection of eartips.

And on the side there is a block with switches, in general there is something to play with here, but in reality I think you, like me, will set them once in one position and will not touch them again.

But it’s worth saying that there is a 2-pin connector installed here, and unfortunately it is not recessed into the case as is usually the case, so you still have to pick up a cable here.
Accessories!
Because the included cable here is completely standard in the Kz style, and I think this is not the first time you’ve seen it, I advise you to immediately change it to something more interesting, yes, it has a microphone and qdc connectors, but it also smells terrible, so it’s probably better don't even get it, that's my advice haha.

There is also exactly 1 bag of black silicone ear tips and instruction!

How do these headphones sound?
Now let's talk about the sound of these headphones.
And here is a very interesting picture, the tuning here is designed in the Harman style, this is not the first time we have seen this, there is also a very good emphasis on low frequencies with a fairly smooth approach to the mid frequencies and a slightly more raised emphasis on the upper middle, but it is small, but personally, I feel it, and the high frequencies here are designed quite well they are long and slightly emphasized with a very small compensation hole, and in general, surprisingly, the headphones are very close to my near neutral target, which pleased me =)

Low Frequencies:
At low frequencies, this model demonstrates a very good and peppy rise of 10 dB if you turn the first two switches up, we get excellent weight and depth of sub-bass notes, which is complemented by midbass with a very pronounced punch and a characteristic attack, albeit not the most clearly defined impulse, and the texture here may not be record-breakingly transparent, but at least the bass doesn’t sound muddy and too relaxed when hit, and the saturation and distortion of the guitars are quite easily conveyed and in the end there is no feeling that something was not told to us here, and the bassheads are already They may well consider purchasing this model.
Mid Frequencies:
The mids here are presented as very energetic with normal, not excessive transparency and air, and feel slightly dry and have a slight lightness in the lower mids, and it’s worth saying that there is a noticeable armature timbre, especially noticeable in vocals, I personally immediately noticed this attention.
But on the plus side, there are quite emphasized transients and attacks that clearly stand out on drums due to the strengthening of the upper mid region, and although the low frequencies compensate for it, I personally would like to get less emphasis on it and make this area a little more neutral, but this is already It’s purely my taste, since I know that fans of brighter settings also read my reviews, so I’m sure they will be happy in this case, and the tuning will be very familiar to them.
High Frequencies:
High frequencies here are a musical and have very correct approach to tuning where there is no super excessive brightness and what I call pseudo detailing due to the strengthening of this area, there is also moderate technicality and, albeit not the most noticeable, but not lost bias in analytics, due to which we we have better separation of cymbals and percussion in this range where nothing blends into one , and everything in the end sounds very readable with good detail and sparkle at the cymbals and long aftersounds, and the very duration of the high frequencies here was surprising, finally there is no such decline after 8 or 10 kHz as often happens even with expensive hybrid headphones!
Stage and stereo panorama:
In Rhapsody it is not super wide and quite close and slightly intimate for the vocal part in terms of location, so there is no feeling like in the same Hidizis MP145 or Letshuer S15 that you are listening to open full sizes headphones, but nevertheless the depth is not bad, and the drawing of plans and the images are not particularly simplified for this cost, everything is quite separated and there are no problems with determining the sound source.
My conclusion on this headphones:
Cca Rhapsody turned out to be an interesting inexpensive hybrid headphone with the ability to tune the sound using switches on the body and the presentation of the headphones, although bright, is quite rich and dynamic with massive bass.
Link where you can buy them!
Aliexpress:https://aliexpress.ru/item/1005006266992448.html
Linsoul:https://www.linsoul.com/products/cca-rhapsody
I will be glad if you subscribe to my YouTube channel and watch this full review on CCA RHAPSODY!

CCA Rhapsody Review: THE NEW HYBRID BENCHMARK?

Price: $50​

PROS:​

• Refined-sounding hybrid for CCA
• Fun, engaging sound that makes music sound alive
• Tuning switches
• Very good seal
• Good tonal balance
• Deep reaching, rumbly bass
• Clean mids with decent note weight

CONS:​

• Might be too large for smaller ears
• Not the most technical set
• Not for trebleheads/detail heads
• Slight incoherency on the bass
• Barebones inclusions
• Not the most dynamic bass presentation

WHO THIS UNIT IS FOR:​

• Harman-lovers
• People looking to upgrade from the Castor Bass
• Bassheads
• People looking for a fun, engaging set
• People with larger than average ears
• People with high tolerance to air pressure build up

WHO THIS UNIT ISN’T FOR:​

• Trebleheads/detailheads
• Timbreheads
• People with small ears
• People with low tolerance for air pressure build up
• People who want an abundance of inclusions

RECOMMENDED GENRES:​

• HipHop
• Rock
• Pop

SHORT REVIEW:​

The Rhapsody is potentially the new standard for CCA hybrids coming into 2024 with its big, hefty bass, clean mids, and tame treble that makes this a solid all-rounder set for anyone looking for a fun listening experience. It isn’t the most technical or coherent sounding set with a slower, less dynamic-sounding bass and a larger-than-average fit that might be uncomfortable for some. Regardless, you cannot deny that the CCA has made a solid hybrid! RECOMMENDED WITH CAVEATS.

FULL REVIEW:​

CCA has always been an interesting case in the KZ family. Is it their premium division? Is it their hybrid division? What is the purpose of CCA’s existence when KZ exists in a similar market? Well, the more I looked at the sets that come out from CCA, the more evident it is that they seem to pioneer the tech and concepts that KZ will eventually adopt.

Think CCA CXS, an IEM that first featured the weird open shell design that ended with the creation of the KZ ZVX. Or the CCA CRA’s tuning philosophy that ended up as the KZ EDA Balanced. Now I have no 100% proof of this claim, but it really seems that way when you look into their products and the subsequent KZs coming afterwards

Today, we’ll talk about one such IEM due to just how well executed the overall package is. Let’s talk about the CCA Rhapsody!

DISCLAIMER: This product was sent over by CCA in exchange for my honest impressions. I was not paid. Rest assured, my thoughts and opinions on this product will be of my own honest opinions and will not be affected by the facts beforehand.

Audio is a very subjective hobby and as much as I try to objectively explain my thoughts and opinions, your mileage will vary. My preferences will also affect how I perceive the gear that I review. Sources and other accessories will also modify your experience. Lastly, my reviews should always be used only as a guide and not as the definitive bible. Trust your ears to know what’s good.

A CLEARLY CONCEPT AUDIO BRAND​

CCA is well known for being KZ’s sister brand and also featuring some of the most well-received sets in the past like the C10, CRA, and today’s set, the Rhapsody. While it might not be as clear as to what exactly separates CCA and KZ’s philosophy, you may speculate as to the reasons. Regardless, it’s hard to deny that CCA has released critically acclaimed sets.

What is clear, however, is that the Rhapsody seems to spice up the market with it’s 2DD + 4BA set-up (with proper tubing between the drivers this time) and a price tag of just shy of $50. So, how well can it capture the market?

UNBOXING:​

The unboxing of the CCA Rhapsody is surprisingly slightly varied from the usual KZ-style products. Instead of the usual whitebox with the illustration of the IEM up front, the Rhapsody comes in a pure black box that has the specifications and illustration printed on the side and CCA up front. That’s how you know this is a unique (or on the contrary, possibly) set.

The inclusions are as follows:

• 1 pair of KZ Rhapsody
• 1 3.5mm Cable
• 3 sets of eartips
• Paperwork

The eartips are your usual KZ Starline that may or may not work, but it does improve seal and boosts the bass at the cost of stage. Unfortunately, no foam tips here which might have actually helped a little bit with the fit which I’ll talk more about later.

BUILD & FIT​

The CCA Rhapsody features 2 Dynamic Drivers and 4 Balanced Armatures in a resin shell and metal faceplate with an interface of 0.75mm QDC. Like many KZ sets, the Rhapsody features 4 tuning switches per side with a potential of 16 different tuning modes with 5 advertised by CCA themselves.



The build itself is your standard CCA/KZ set with a pretty durable feeling resin shell and metallic faceplate. It feels sturdy, but nothing too special or fancy in how it feels. I’ll be honest, I don’t like the faceplate design that much. I do not like the Rhapsody font and the somewhat folded design looks a little odd when paired with that massive vent. Obviously, it’s a taste thing but regardless, I’m not a big fan



Speaking of big, this is, by far, the chunkiest KZ I’ve ever worn. Seriously, the fit was so snug and tight in my ear I almost thought I was wearing some $300 hybrid that also hurt my ears due to the number of drivers jammed into it requiring a larger shell. As expected, people will smaller ears will absolutely abhor the Rhapsody. This thing is so massive that this was my first KZ in a while that actually caused problems for long-term comfort.



However, I do want to address the seal as this is probably the part of the Rhapsody that separates it from the rest of the hybrid lineups. The seal on this is insanely good. But at the cost of air pressure build up. And if you’ve been following my reviewers for a while, you know IEMs that have air pressure build up are essentially unusable to me. Thankfully, the Rhapsody isn’t the most air-sucking IEM that I’ve tried and tiprolling to the tried and tested Tangzu Sancai actually helped this to not have as crazy of air pressure build up.



As expected, stability is solid on the Rhapsody due to its size and shape. I had 0 problems wearing this for long periods and it falling out due to my ears starting to sweat up. It’s a very snug and stable fit that, again, comes at the cost of discomfort as it adds a lot of pressure unto my antihelix.



Overall, it’s a decently built, larger than average CCA set with a VERY snug fit, seal and isolation at the cost of long term comfort and air pressure build up. It can be remedied quite well through tip-rolling and the stability is one of the best I’ve tried in any CCA sets. I’m not a fan of the aesthetics, but that’s just me.

SOUND​

NOTE: As the Rhapsody features 4 tuning switches per side, I’ll be talking about the tuning configuration that it came stock in and compare the other configurations later.

Sound Signature​

The Rhapsody features a rather steep U-Shaped sound signature with subbass emphasis, recessed lower mids, forward upper mids and elevated but smooth treble. As a KZ hybrid, the coherency in this set is actually insane. While the bass might still lag a little bit behind the mids and treble, there’s barely any metallic timbre and the higher frequencies don’t sound much faster than the lower frequencies.

Drivability:​

With an impedance of 15-20ohms and sensitivity of 102db, the Rhapsody is quite easy to drive with a smartphone. Its tuning also makes it sound quite good, even through a smartphone. Your experience with the Rhapsody will be improved when using at least a dongle DAC, but I’d say it’s not necessary at all. I will say that pairing this with a more dynamic sounding DAC would improve its low end nuances better and bringing out the details better too.

Bass:​

On my first impressions, I said that the Rhapsody sounded alive. And this was the reason for that finding. The bass on the Rhapsody is big, boomy and ready to party. It has a subbass over midbass emphasis, but it’s elevated to the point where the subbass and midbass starts to balance out into a perfect storm. It is massive, it is booming and certainly for bassheads. However, I will say that texturing and bass nuances.

Right away, I HAD to listen to Childish Gambino’s Me and Your Mama at the 1:37 mark and feel that rumble and boy, was I not disappointed. The depth and rumble of this is out of the charts and absolutely addicting. However, texturing as mentioned was lacking on a track like Send It by D’Angelo.

Mids:​

What’s not so undeniably fun is its midrange. I will preface this however by saying that the Rhapsody’s lower midrange presentation is quite better than other midbass tucked sets in the market. There’s still a decent amount of body and note weight, but still lacks for my tastes and can sound quite recessed in busier mixes. Female vocals fair better, however, as the cleaner and open lower mids leave the upper frequencies with a rather crisp and nuanced vocal presentation.

Instruments are expectedly on the thinner side, particularly in the lower frequencies. There’s almost this clear divide when the bass ends and the lower mids start as instruments lose their hefitness quite quick. It’s note entirely cold sounding, however, as the balance between the lower mids and upper mids are quite well done and smooth in the mix.

Get Lucky by Daft Funk sounds very fun and energetic, but Pharell’s vocals as well as some of the backing pianos often lacks emphasis in the mix due to the deep, elevated bass presentation. Still, this was a very fun track to listen to on the Rhapsody despite that. The low end emphasis made the music sound so alive and engaging. Orchestral tracks, however, don’t fair as well. Something like Tohpati’s True Love. Despite not really having much low end, the guitar reverberations loses some nuances in the acoustic guitars.

Treble:​

The treble of the Rhapsody is generous and forgiving. There’s no unneeded overemphasis on the treble but still keeps a decent amount of clarity and energy to give life to higher frequency notes. I didn’t find any harshness or sibilance whatsoever and I’d even go to say that this would be a pretty good IEM for those who are sensitive to treble. There are instances of it getting a little hot, particularly on more poorly mixed tracks and when cranking the volume too high. But as a whole, it’s quite inoffensive. However, it does lack a little bit of that sparkle for my own personal tastes. You probably already know how much I love my spicy treble and for better or worse, the Rhapsody keeps sparkle at a normal level.

Can’t Hide Love by Earth, Wind and Fire is a very good track to showcase the smoother treble presentation of the Rhapsody. From the intro to the end, the cymbals in this track never got grating or sibilant and offered a really nice amount of clarity, although admittedly has its finer details masked in the rather bombastic bass presentation that I found to perfectly suit this older track. Older tracks seem to be tuned with less bass in mind, so a bigger bass set like the Rhapsody was able to nicely present both the low end and the top end.

Technicalities:​

This is where the Rhapsody takes a chill-pill and takes the energy a notch down. It takes a more musical than technical approach with the stage offering pretty good depth, decent separation and layering and pretty good imaging.

Stage is more catered to providing a rather immersive experience than something more expansive, but the depth is quite well done and music feels extra full.

Separation is less than stellar, but it’s still able to present instruments in a rather clean and smooth manner without much congestion until more complex tracks. The bass definitely attributes to the less capable separation ability.

Imaging is quite good, and I’ll talk more about in the gaming section. But for music, I absolutely loved how this was able to present instruments in a rather expansive level. Left and right as well as front and back was quite impressive, although nothing that is too mindblowing. I can pinpoint instruments quite accurately, but once agains struggles on more complex tracks.

REAL WORLD USAGE:​

Casual Use:​

On one end, I think the Rhapsody is pretty good for casual browsing and consumign content. The tuning is very engaging and fun when watching movies, shows and the tuning allows for most content to never get grating or hard to hear thanks to its easy drivability and balanced tuning. However, fit is certainly a big issue on longer sessions as it seriously gets painful. It’s been a while since an IEM has done that to me, but it’s honestly expected due to its 6 driver per side configuration

Gaming Use:​

Gaming is fantastic on these. The subbass over midbass emphasis allows low end sounds to pass through without sounding muddy or congested and the balance with the upper mids allow higher frequency sounds to shine without harshness. I absolutely loved this for gaming, but unfortunately the fit rears its ugly head once again. I have to take more breaks when gaming with the Rhapsody than the usual IEM which is not a good thing when I wanna keep immersive, but at least reminds me to take breaks every once in a while.

DIFFERENT TUNING MODES:​

Let’s do a quick comparison between the different tuning modes that are advertised by CCA


0000 - The “Basic” graph as CCA stated, but oddly was not the basic graph for me as it came in all up mode. This is essentially boosts the bass up which breaches into the midbass and can occasionally sound a little bit on the bloated side.


1000 - The Bass +1 mode, which boosts the bass even more. This is makes the bass even more boomy, but oddly not as much on the rumble end. Rumble still seems quite similar but the midbass sounds a little bit more overcooked



1100 - The Bass +2 mode, even more bass! But this time, with extra rumble. This is the basshead setting and I did not linger on this mode for too long for the sake of my eardrums. It sounds very fun though



0010 - The Mid & High + 1 mode, which tames the sub bass but boosts the midbass without really changing the upper mids or treble that much. It shifts the balance to be less boomy and slightly clear



0011 - The Mid & High +2 mode, which is my favorite tuning as it’s the least bassy. Subbass does take a significant hit and it becomes considerably cleaner but less engaging. Still, I loved this setting the most because it’s the least bassy mode.

COMPARISONS​

Vs KZ Castor Bass Enhanced​

The reason why this is my first comparison is because the Rhapsody is essentially the upgraded version of the Castor Bass in every single way, minus maybe the build as they’re very similar in that regard.

The bass is tighter and cleaner on the Rhapsody, lower mids aren’t as sunken or thin, upper mids aren’t as shouty and the treble is better extended and more resolving. Even the fit is better, although more on the stability side as the Castor is still more comfortable than the Rhapsody due to its smaller shape.

Vs Simgot EW200​

The EW200 has a better overall timbre and technical ability than the Rhapsody, but the Rhapsody brings in a considerably bigger and more engaging overall sound. It’s less natural sounding than the EW200, but also less fatiguing than the brighter and potentially hotter upper mids to treble of the EW200. Technicalities are ahead on the EW200 by quite a margin which surprised me as the EW200 is cheaper, but it does feature a very high quality driver.

Vs Truthear x Crinacle Zero: RED​

Against it’s fellow 2DD (but not hybrid) brethren, the two have a similar transient response, that being on the smoother side with focus on a smoother and more lush listening experience. However, timbre and coherency is better on the red as unlike the Rhapsody which is a little bit slower on the bass and a tad bit faster on the treble, the Red just sounds slow and sloppy althroughout which gives it a lush and analogue sound. The Rhapsody is also considerably more fun and engaging sounding than the Red, even with the included impedance adaptor. Technicalities are slightly ahead on the Castor, but the overall presentation is smoother on the Red.

Vs Truthear Hexa​

The Hexa falls under a similar light to the Red with it focused more on providing a smoother, more coherent and more natural sound presentation compared to the Rhapsody. However, unlike the red, the Hexa is more technical sounding than the Rhapsody. The Rhapsody is still more fun than the Hexa, however.

CONCLUSION​

If it was not yet clear, I genuinely think that the Rhapsody is a fantastic IEM. Hell, I’d even say that the Rhapsody is one of if not the best-sounding hybrid that KZ has ever made. The balance of booming, lush bass and smooth upper midrange gives it a well-rounded sound.

While I do find some gripes with the bass tuck, bass lacking nuance and being just a tad bit slower than the rest of the frequency, its sparkle somewhat lacking for my tastes, and it generally not-so-stellar technical ability it is almost hard not to recommend this to most people who want a fun, engaging and well-tuned set.

Thank you for checking out my full review of the CCA Big thanks to CCA for sending this over for my honest impressions. If you would like to buy your own check out the non-affiliated link below: https://www.kztws.com/products/cca-rhapsody

WATCH FULL REVIEW HERE: CCA Rhapsody Review Video


If you have any questions or concerns, contact me on my Facebook page or at obodioreviews@gmail.com

Enjoy music and have a great day!

Introduction​

CCA has always been “the handsome sister brand” of KZ, famous for bringing products g more balanced and better sounding tunings with respect to their strongly V-Shaped counterparts.
The CCA Rhapsody are among the latest releases from the brand, featuring 6 drivers per side (2 DD + 4 BA) and tuning switches, and has already received some good reviews online.

Well, guess it’s my turn now!

Disclaimer: the CCA Rhapsody were sent to me by CCA free of charge so that I could write an honest review. This review represents my personal opinion on the set and it is by no means a promotional or paid content.
At the time of the review, the CCA Rhapsody were on sale for 35,99$ at kztws.com.

Technical Specifications​

• Driver Configuration → Hybrid (2 DD + 4 x BA)
• Impedance → 8 Ω
• Sensitivity → 108dB
• Effective Frequency Response Range → 20Hz-20kHz
• Cable → 1,20m 5N copper silver plated cable with 0.78mm 2-PIN connectors
• Plug Type → straight gold plated 3.5mm jack connector

Packaging​

Nothing new under the sunlight as the Rhapsody come with the same packaging as older KZ and CCA products:

• The CCA Rhapsody
• One set of starline eartips (S, M, L)
• The detachable 3.5mm cable with 0.78mm 2-PIN QDC connectors
• A SIM Card removal needle (needed to move the switches)
• User manuals and instructions

Design and Build Quality​

The CCA Rhapsody are larger and taller than average, with a thick shell that hides a multi-driver setup and tuning switches. The dark-silver faceplate is glossy and elegant, and the “Rhapsody” name isn’t ugly to see (which is good news) and there’s a hole on the faceplate with a visible grill, even though I’m not sure if it’s an open vent or if it’s just a decorative part of the shell.
The switches are located on one side of the IEM, but the reason why the switch panel is not symmetrical between the two IEMs is unknown to me.
The nozzle is not as wide as on other sets but it’s not a small nozzle either.
Overall, the Rhapsody are built very well with no major assembly flaws and they also feel very sturdy and well built to the touch.

Cable​

The stock cable is, unfortunately, nothing to write home about. It’s the same cable that KZ and CCA have been including for ages now, and even though it’s not as bad as the one they used to provide in the past, I still think a small effort to include an even better cable could be done.

Comfort and Isolation​

Comfort can be good or bad depending on the size of the ears: those who have small ears will likely have some comfort issues overtime, mostly related to the size of the shells (including their thickness), whereas others will find them sitting in a stable and comfortable way in their ears.
Isolation is more than enough for outdoor listening sessions.

Sound​

GEAR USED FOR THE TEST

• DAC: Topping E30
• AMP: Topping L30
• Mobile phones: Samsung Galaxy S7 Edge, Xiaomi Mi A3, Samsung Galaxy S23 Ultra
• Moondrop May’s DSP cable with PEQ=0
• Dongle: Apple Type-C dongle, Truthear SHIO
• Portable DAPs: Benjie S8/AGPTEK M30B
• Other sources: Presonus AudioBox iONE, Elgato Wave XLR, KZ AZ10

Do they need an amplifier?
The CCA Rhapsody don’t need an amplifier, but giving them some juice is not a bad idea. I’ve noticed a bit better low-end tightness when connecting them to a proper amp.

Sound signature
The sound signature depends on the switches’ positions. The first two switches have impact on the bass, the other two twitches have impact on mid&high frequencies. Basically, setting the first bass switch in the UP position increases the low end, but if the second bass switch is also switched in the UP position, then the bass increases even more. Same applies for the mid&highs switches.
There are many possibilities and one can really try playing with them, but this review will be based on the DDUU combination, which basically avoids too much bass emphasis or a subdued upper range by following the Harman target more or less.
Moving the switches in different ways by starting from this position helped me understanding the various effects of the switches, but your mileage may vary of course.

Lows
The low-end is solid with average extension, a pleasant yet limited rumble and a very punchy bass that is more forward than the sub-bass. The bass is not the tightest or the fastest around, and the textures are only average, but it sounds very impactful in a pleasant way. I think these will be perfect for bassheads since there’s already a good amount of bass in the DDUU config and the switches really make the bass even more powerful, deeper and punchier.
For sure these are not for those seeking for neutrality, especially because they already have emphasized bass even in the switches’ combination with the least amount of low-end.

Mids
The lower midrange is slightly compressed between the emphasized bass and the upper midrange, and even though this happens, it still has some pleasant warmth that brings some character to male vocals (even though they don’t really “stand out”). The upper midrange is forward, just like on most Harman-ish sets, and although some instances of sibilance are still a thing, they don’t occur very often and aren’t unbearable, also thanks to the fact that the treble is gently roll-off providing more smoothness.

Highs
As said some lines above, the treble is rolled-off but still has enough energy to make good contrast with the low-end, providing a very engaging and dynamic sound. And good news, BA timbre is not a thing in most cases (even though it can pop-up at very high volumes and while listening to genres that require more treble such as metal).
The detail retrieval and resolution are below average for the price but the overall sound is very smooth and cohesive also thanks to the treble tuning. In addition, if we put the switches into the equation, then it’s easy to understand that everyone, including those who are sensitive to treble, has a chance to like these.

Soundstage is average and so is the imaging.

My favorite combination of the various switches: UUUU.​

The UUUU combination has a more controlled midbass, more sub-bass extension and rumble, a bit less subdued lower mids and slightly better timbre overall. The other frequencies remain basically the same, so it’s more of a personal preference than anything else.

Some comparisons:​

CCA Rhapsody DDUU vs TRI Star River DD (Balanced and Natural position)​

Both have switches but the Rhapsody has even more, thus giving more combinations of up and down positions.
Overall, the Rhapsody are a lot better in terms of tonality, timbre and cohesiveness even though they are a hybrid set. The Star River has a bit more sub-bass extension with respect to the DDUU config of the Rhapsody, even though the latter can easily compensate by using the UUUU config. Going up top, the Rhapsody are more natural too and can be used also by those who are sensitive to treble, whereas the Star River are bright even in the least bright config, even though they have better details, resolution, imaging and soundstage.
The Rhapsody are more refined and pleasant to the ears, the Star River are more technical but way less pleasant and fun to listen to.
Both are well built, very comfortable and insulate well from external noises and both come with average cables, but the Star River come with a much better set of tips (since they also include TRI Clarion eartips).
If someone told me to choose only one of the two, I’d get the Rhapsody without thinking twice.

CCA Rhapsody UUUU vs CCA CRA​

To compare them in a fair way, the Rhapsody have been set to UUUU combination.
The low-end is perceived as more emphasized on the Rhapsody but this is just because they have less treble than the CRA. The CRA, instead, have better treble extension, more details, better resolution. Soundstage and imaging are slightly better on the CRA.
From a tonal perspective, the CRA are very bright so they are a no-go for those who are sensitive to treble, whereas the Rhapsody are very versatile and usable even in their brightest switches’ combination. In fact, the biggest step up from the average KZ/CCA set is the timbre, which is greatly improved on the Rhapsody.
Both are well built and the CRA are more comfortable but the Rhapsody insulate better from external noises. Both come with very average cables, to say the least.
I would probably pick the CRA for the brighter signature since I like a more sparkling upper-end, but I think the Rhapsody are more refined and easier to recommend to anyone.

CCA Rhapsody DDUU vs Celest Wyvern Pro​

Both are Harman-ish but the Rhapsody are more fun, warmer and bassier overall, while the Wyvern Pro are technically superior and more balanced with better end-to-end extension.
They have more mid-bass quantity and punch, slightly warmer male vocals, and a touch less forward upper-midrange. The Wyvern Pro have less midbass that is also faster and more accurate, slightly more subdued male vocals and more forward and energetic female vocals. The treble extension is decent on both but the Wyvern Pro are slightly superior and more resolving due to the fact that their midbass is not as prominent as on the Rhapsody.
Soundstage and imaging are a lot better on the Wyvern Pro.
Build quality is very good on both. Comfort is very subjective since both have something that could make them tricky to keep in the ears: the Wyvern Pro have a protruding wing on the shell, whereas the Rhapsody have very bulky shells. The Wyvern Pro come with a better cable.
If I were asked to pick one, I’d choose the Wyvern Pro any day, but I also understand those who like a lot of bass will find the Rhapsody a more interesting set from a timbrical point of view.

Final Thoughts​

CCA has really done wonders with the overall cohesiveness and timbre of the Rhapsody: they are fun, warm, pleasant to listen to, easy to drive and versatile thanks to the switches. I think this is the best driver implementation KZ has done to date, especially considering that there are multiple drivers that come into play.
Where do they fall? Soundstage, imaging, resolution and detail retrieval aren’t their “forte”. They are not bad under those aspects, but since there are lots of IEMs that are technically capable in this price range it’s time for KZ and CCA to step up on that, especially now that they have reached enough confidence with the tuning and that they have shown (i.e. with the Duo) that they can make technically competent stuff for cheap.

I am pleased to recommend the Rhapsody, but only if you are able to buy them for around their launch price or discounted price (i.e. around 30$): that is a very good price for them and they are definitely worth that money if you want a fun and smooth sounding set and are not bothered by their bulky shell.