Simgot Supermix 4 (1DD + 1BA + 1 Planar + 1 PZT)

Intro
Simgot has had quite a 2023 and maintained momentum going in to 2024 with its release of the EA500LM, improving on its predecessor in all fronts. Though it has to be said that despite the number of Simgot fans and followers, there is the polarizing camp that is the opposite and are not onboard the Simgot house sound, finding most of their products just following the common Harman curve in diff implementations. It's a good perspective that they have now spread their release calendar more (not the typical Moondrop and KZ weekly launch frequency) and introduced the SuperMix4, a breath of fresh air from their somewhat repetitive iterations of the Harman sound. Can this set convert those that are hesitant of the Simgot tuning? Let's discuss and see why it is worth checking the SuperMix4 out, whether you're a fan of the brand or not.


Build and Inclusions
The SuperMix4 is a step away from Simgot's common DD based lineup and is composed of 4 types of drivers, combined to make a product that is impressive to be coherent enough comparable to the Kiwi Ears Quintet's execution albeit in a different sound signature. The SuperMix4 comes in an innovative 4-driver configuration of a single 10mm DD, single BA, single Planar Magnetic, and single PZT hence the name. Upon unwrapping the attractive box with a laser-foil green cover design, you are greeted by the IEMs themselves with a box containing the zipcase and cable as well as a single set of 3 different sized pairs eartips. The cable itself is the similar to the usual one that's included with Simgot sets terminated in SE 3.5mm which is not that special but does the job. The cable might not look much but the IEMs feel solid, very minimalistic yet classy.



Sound and Comparisons
Like I've hinted to start this impression piece, the SuperMix4 is a different beast from the other Simgot sets altogether. The mashup of different drivers present a very smooth, velvety, balanced sound (somewhat warm U-shape) that veers away from the energetic bright Harman Simgot house sound. What did surprise me and put an inmediate smile on my face was how it was executed in both a very technical and musical way. The SuperMix4 sound is detailed, with pinpoint imaging of different instruments across the wide and deep stage then instead of the either the usual intimate or forward vocal presentation, the mids are almost speakerlike - positioned just in front middle ala phantom center creating the somewhat tired-termed holographic 3D staging but yes, it does sound that way. The bass also has a satisfying rumble and heft though could use a bit more impact and slam. Treble is smooth and not peaky, which is good with the PZT driver. It's well-roundedness and versatility can be compared to let's say the Binary Audio Chopin, which is almost the same price range but they are still different with the SuperMix4 being the smoother, warmer listen while the Chopin being a bit brighter and more fun. The same goes with the Truthear Nova, with the Nova even being the leaner listen, with mids being a bit thin compared to the warm tilt and weightier mids of the SuperMix4. Yet what is common amongst these sets is their ability to handle most music genres and versatility. The SuperMix4 is both pleasant and engaging, which is quite a feat to achieve especially at this pricepoint.



Conclusion
The SuperMix4 is a remarkable step-forward for the brand, quite different from its single DD and Harman curve comfort zone. Simgot has another winner in their hands and this time, it's quite impressive that they were able to come up with a cohesive well-rounded sound package of 4-drivers and achieve a non-offensive smooth balanced sound that is worth more than its $150 price tag. I recommend a must-try especially for those still hesitant to touch a Simgot product. They might become convert themselves and embrace that they are more than just a one-trick-pony brand. Kudos Simgot!



Sidenotes:
IEM set has been listened via the Sony ZX-707, AK Kann Alpha, iFi Go Bar Kensei and Cayin RU7 separately using the stock eartips over the course of multiple genres across FLACs (16bit&24bit) and streaming (Tidal). The Simgot SuperMix4 is available through multiple sellers for $150.

New King Around $150: Great Tuning + Awesome Technicality!​

First of all, thank you to Kuping Sensi for providing this unit for an honest review. If it's bad, I'll say it's bad; if it's good, I'll say it's good.
Who doesn’t know Simgot? (Well, some might not, haha). But for audiophiles in Indonesia, it's almost impossible not to know them, especially in the last year where their IEMs have been nothing short of excellent. And now, they have released a new IEM with a 4-driver configuration, each being a different type, and it falls into the mid-range IEM category in Indonesia.
Let’s get right to it... Simgot SuperMix 4.

==DISCLAIMER==​

All impressions were tested using my usual setup (list below). So if there are differences in sound impressions, it's likely due to our subjective hearing differences, a defective unit, or the source used. All my impressions and reviews are subjective and follow the belief "I only lie to myself about my savings, my reviews are always honest". Agree? Fine. Disagree? Fine. I review because I want to and I like it, not because I need to, haha.

Important!! I recommend you still audition it yourself, who knows if it’s my ears that need an ENT doctor or yours (haha).

Click to expand...

==MY DAILY DRIVER==​

- Symphonium Crimson
- Kinera Verdandi
- 634ears Loak 2 OP
- Simgot SuperMix 4
- Fiio Q15
- Chord Mojo 2
- HibyDigital M300
- Hiby R4
- Ear Tips Eletech Baroque, Spinfit W1 Premium, Azla Sedna Crystall
Unboxing:
With a price around $150 or about 2.5 million IDR, it turns out Simgot still sticks to the usual box and contents. But fortunately, there have been improvements, especially in the cable compared to other Simgot IEMs below its price. Contents include:

• The IEM itself
• A carrying case (thick and slightly large)
• 2 braided cable with 2-pin connector and 3.5mm jack (Thank goodness, no more sticky plastic aquarium hose cables. Still wrapped in plastic but with noticeably better quality)
• 3 sizes of ear tips (these ear tips are still just "meh")
• Documentation

Fitting:
A 4-driver hybrid undeniably requires more space. This is evident from its thicker shell compared to other Simgot IEMs like the EA500LM. The surprising part is the shell material; it's all plastic and lightweight, unlike the usual sturdy metal shell from Simgot. The nozzle itself is slightly longer than average but with a smaller diameter. It can be tricky to find suitable ear tips, but once you do, it’s comfortable and no problem to wear.

==SOUND IMPRESSION==​

Bass:
From the first listen, the SuperMix 4 has an enjoyable sub-bass texture. The rumble is round and long enough to be enjoyable. The somewhat slow and long impact gives the music a grander feel. Similarly, the produced bass is punchy and textured, but with slightly less power than the sub-bass, making the drum slam feel less deep even though the texture is good and dynamic. Sub-bass is much more prominent than the bass.
Mid:
This turns out to be the main star of the SuperMix 4. Yes, the vocals. It has a forward presentation with a natural timbre, which is a selling point. The tone thickness for both male and female vocals feels just right and airy, making the sound musical and pleasant to listen to. Unfortunately, the elevation in the upper-mid makes high-tone female vocals in some songs sound shouty. Additionally, instruments like the snare drum and finger snaps in some songs can sound unclear, which I find quite disturbing, such as in the song "Thunder" by Imagine Dragons.
Treble:
The treble is smooth and fun. The extended treble sounds long on the shimmering parts of the song, making it very enjoyable for treble-heads. The treble is clear with engaging power, delivering micro-detail in the treble very well. There is no sibilance or unclear treble. This treble configuration is great for long listening sessions.
Clarity:
Despite the shoutiness in high-tone female vocals in some songs, this IEM offers super clean and clear sound in all aspects. Its micro-detail is one of the best in its price range.
Soundstage:
Wide and grand. The airy sound from dynamic instruments and excellent sub-bass adds to the spacious feel.
Imaging:
Another best sector of this IEM is its imaging and technicality. This IEM has 4 different types of drivers but very coherent sound between the drivers, really impressive. 3D imaging is clearly felt with great separation and layering of instruments in its price range. It’s tough for an IEM to achieve such good technicality.

==SOURCE SELECTION==​

• Mojo 2 (analog, neutral, a bit warm):

Recommended, the shoutiness in high-tone female vocals disappears, and the low frequency sounds more textured. The forward vocals are polished, feeling analog and very natural, making it a favorite for vocal lovers. The treble is slightly less sparkling but still with good micro-detail and engaging power.

• Fiio Q15 (neutral, analytical):

Recommended, the micro-detail and soundstage are pushed to a better level. The sub-bass is not as maximal as with the Mojo 2, but the treble feels crisper and more detailed.

• Hiby R4 (warm, not bright):

Okay, the sub-bass feels long, but the bass impact is less powerful. The vocals feel more engaging but slightly thinner than with the Mojo 2. The treble is really off and less engaging. Additionally, the treble becomes slightly unclear in some songs.

==CONCLUSION==​

• With bass that has good texture and power, smooth and clean treble, and forward vocals, this IEM has a W-shaped sound signature. Not only is the tuning excellent, but the technicality of this IEM with good driver coherence and great layering is outstanding.
• Unfortunately, the high upper-mid elevation makes high-tone female vocals prone to unclean sounds.
• Is it worth buying? For me, the key to SQ is sound signature and technicality. Both are very well achieved in this IEM.
• Best Value to Performance IEM (at this price range)

That's all.
Thank you, Kuping Sensi.
Trust Your Own Ears.
Bye.

SOMETHING OLD AND SOMETHING NEW / WHAT THEY ARE AND WHAT THEY’VE BECOME
Review: Thieaudio ORACLE MKII (the old) and Simgot SUPERMIX 4 (the new) and this isn’t about the accessories!



Old Method: Both IEM’s were base lined against a library of 30 songs. Then the fun begins!

New Method: You might want to grab a cup of coffee. This might take a while. I EQ just about everything. I also tip roll with the best of them, but after finding the right fit, feel and sound from tips I make my own Parametric EQ’s (PEQ’s) in Squig.link.

Step 1: Measure the frequency response of the IEM’s. I could just trust others measurements here, but to get the best possible result measuring the exact IEM with a 711 coupler in REW is best.

Step 2: Upload the traces for right and left into Ducbloke.Squig.link

Step 3: This is where it becomes time consuming and complicated. I’ve made 42 “target” files to PEQ any IEM squig graph against. This is a 6x7 matrix, 6 bass lift levels x 7 Bright to Warm treble settings



Step 4: Uploading all 42 custom PEQ settings into a FiiO M17 DAP, then loading them into Poweramp Player.



Step 5: Listening to the same library of 30 songs again, but this time changing the PEQ settings on the fly until the best one is found specific to the track. Record the PEQ selected to each track and build a graph that shows which PEQ works best across the majority of the songs.



The Oracle MKII and Supermix 4 might seem similar from the graphs below, but this couldn’t be further from the truth in the graph above. The Oracle MKII is known for being overly bright and a bit shouty. While the Supermix 4 is slightly bright, but has better detail retrieval. Both lacked the Bass Punch and Slam I prefer, but this was easily corrected.





This is where this journey takes a bit of a twist. I started out trying to develop a method for getting the most out of any IEM, what I learned was enlightening. You see it wasn’t just these 2 IEM’s, but 5 sets in total.

1. A library of 30 songs, mastered in different ways, from different genres can require vastly different PEQ settings to be optimized. I knew there’d be some variation, but I wasn’t expecting as much as I saw, with Bass variations of up to 4.5dB and a shift from bright to warm.

It was like a lightbulb went off in my head. Maybe, just maybe, a big part of the variation we see in reviews of the same IEM by different people, could be down to the library used, more so than the source or the tips chosen..?

2. An IEM that has great reviews, like the Mega5EST, for example, (also used as one of the 5) can be improved and at the same time has a much tighter spread. They are tuned well and have good quality drivers to begin with. This yields a better chance of finding one standard PEQ setting that can be used across multiple tracks



Notice from the graph how the grouping is tightly focused around a 4.5dB bass elevation and only shifting slightly right and left of treble neutral. This explains a lot why so many people are falling in love with the Mega5EST. It’s a true jack of all trades.

3. This then got me thinking how this projects approach to tuning could be reversed as feedback for manufacturers to make the next great thing by understanding what’s possible with the drivers, shell acoustics and crossovers, or where they might need changing

Step 6: Listen to the 30 Song library with the best PEQ setting and re-evaluate both IEM’s. Report on the before (no PEQ) and after (with PEQ) sound qualities.

Oracle MKII: Picked up new for the bargain price of $240, this set usually retails for $549. We worth the investment, despite the reputation for not being as good as its predecessor.



The Sub-bass and Bass regions of the Oracle are weak out of the box. While being a Tribrid with DD, BA and EST drivers, the DD just doesn’t deliver the thump or slam I was hoping for. After the PEQ was applied, the rumble, thump and slam I was used to in the Monarch MKIII was now present in the Oracle MKII.

The mids were overshadowed by the treble region and vocals were a bit sibilant and shouty. I attribute this to the spike around 4k. The PEQ also pulled the spike down. The drivers are now being their best self and delivering much better mids, treble, detail and layering. This also delivered better timbre and texture, giving an overall score of 8.4/10. Making this a real competitor in the MidFi Range for only $240



Supermix 4: Out of the box this set is getting mixed reviews. I blind bought it because I believe in Simgot and the driver configuration, 1DD+1BA+1Micro Planar+1PZT. The mids and treble were getting good reviews, but I was hearing the Bass could do better, confirmed by my initial rating. I was also reading some slight shoutiness (again, very much track dependent).



What really impressed me was the speed, tonality and texture of this set at a price of $135. If it wasn’t for the bass region letting it down this set would be competing with sets more than 2x the price and after PEQ it absolutely does. I was able to get the score up from an 8.0, very good to start, to an 8.6, where sets in my collection cost between $500-800!

When the bass region is elevated it can impact the treble adversely. To my surprise the vocals in me mid region and sparkle in the treble were made even better. Across all 30 tracks I was hearing clear vocals with no sibilance and excellent detail. You can see from the graph that the traces pretty much cross and bring this set to have a signature that tilts left and again becomes a bass beast.



Conclusion:

• Any IEM can be made better through the use if Parametric Equalizer, but it’s not a simple process to get it right
• One size doesn’t fit all. Different tracks need correction in different regions. Finding a good average setting can make this almost perfect, but having a few PEQ settings is ideal
• My library isn’t your library and it isn’t the other guys library etc. etc. Having a broad range of songs from different artists and genres will help to balance out the overall performance and give better impressions. It also makes it difficult “out of the box” for reviewers to get it right

For any purists out there who don’t believe in EQing, and those that do, I hope you enjoyed the review for what it is. I’ll continue my work using this new method and be doing my reviews with and without PEQ going forward. I liken PEQ to tuning a stock sports car to get every bit of performance out of something that’s capable of being better. We all enjoy tip rolling. This is performing it’s own little EQ with each tip type.