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JDS Labs C5/C5D (pg96) portable amp/amp+DAC appreciation + discussion thread - Page 162

post #2416 of 2646
Quote:
Originally Posted by luisdent View Post

Quote:
Originally Posted by miceblue View Post

Quote:
Originally Posted by luisdent View Post

O.k.  I've done some initial comparisons, and although I might get some flac for this, here are my findings:
Testing Details (Click to show)
First, let me say that I've done the initial testing with my Sony MH1.  I'll be doing further testing with my other earphones, especially the ER4S, which are considered more critical of things.

So far though, with the MH1 using the same lossless files, the C5D from the usb of my MacBook Pro sounds identical to the C5 from my iPod Touch 5G, which sounds identical to the iPod Touch 5G headphone output, which sounds identical to the digital output of the iPod Touch 5G to the C5D, which sounds identical to the Fuze v1 and ZipClip.

Now let me explain this brief testing and give some opinions.

First, again, I used all the same lossless files on each device and volume matched each device.  This is using no EQ, no effects, nothing but raw lossless audio.  I used tracks ranging from Christopher Cross to Dream Theater.  I compared a few seconds of each track, small sections of each track and tracks in their entirety.

This was a full double blind test.  The connections were made without me or the person connecting them knowing which was which.  Each song was synced perfectly for playback so well that I could flip the switch back and forth and the timing had zero interruption nor volume change.  In fact, when I flip the switch quick enough it makes no noticeable audio disruption at all.  I can flip the switch back and forth repeatedly, and when I do it fast enough it literally sounds like I'm listening to the same song and I wouldn't even know anyone was touching the switch.

It is very hard to rule out the brain, and last night I was listening to the C5D with the iPod and thought it sounded clearer somehow.  But I believe now that I was trying to hear if it was clearer and therefor thought it might be.  That is just my opinion.

So, before you think I'm saying anything bad about the C5D, quite the contrary.

The C5D is awesome.  Very awesome.  Every single device I have sounds better than the output of the MacBook Pro, which is really surprising.  The MBP output has noticeable noise, and lower fidelity in general.  Very disappointed in it myself, so much that I'd personally never use it.  For a speaker output the noise isn't as noticeable, but with earphones it seems much worse.  Anyway, the apogee duet costs around $500 new, the iPod touch with reasonable space (64gb) costs $400, the fuze+ costs roughly $100 or more when you add an SD card, but there are claims the fuze+ doesn't sound as good as the fuze (haven't heard it myself).  But as the fuze is discontinued we'll use the + as a price point.

The point is, for any device with reasonable quality and storage capacity you're looking at a good chuck of change.  The C5D can be used with any computer/laptop and turn it into an amazing sounding device with all of it's large storage and it costs $250.  That's an awesome deal, since most people have a laptop or computer.  But it's not just isolated to computers.  It can improve the quality of a phone.  Throw in an SD card and you have a great sounding player that way as well.  Just look at what you get for that price in general:

- uber portable compared to most desktop sound interfaces that don't suck
- reference sound
- amplification for harder to drive earphones/headphones
- isolated battery mode which I believe would eliminate noise issues with some usb systems (such as grounding loops)?
- a built-in reference amp that doesn't require usb (for devices not compatible with the dac functionality)
- Two-point bass boost option that sounds great

So I think it's an awesome investment for anyone who is an audiophile, even if you have other amps.  You can grab it and go, knowing that you'll be able to use it on pretty much any device.  It allows you to KNOW you're going to have reference sound.  It's an all-in-one package with a nice form factor.

In terms of sound, I'm not jumping to any full conclusions yet.  I'll do a lot more testing with the more demanding earphones I have and see how it goes, but I'm predicting the results will be similar.

But either way, great job JDS on the C5D!  I love how they threw the DAC right in the same case with the C5.  And their devices all have the same profile.  Very cool.  I'll report back with more testing results in a while.
I'm doing some A/B tests with the K 701 right now. I did approximate volume matching with a 1 kHz sine wave via Audacity and I'm listening to Daft Punk's "Give Life Back to Music" song in 24/88.2. Using the FiiO HS2 to switch between amps, I'm noticing that the C5D has a slightly deeper low-end compared to the C5 (bass boost is off for both amps and at low-gain). Especially with the bass guitar notes, the C5D hits them harder and it's more noticeable near the end of the song with the background people talking. Overall though they sound pretty darn similar, as is to be expected.

Perhaps you're hearing the difference in format? I heard no difference in the amp sections with a volume matched a/b. however, if you have 24/88 going through the c5d, perhaps you're picking up the increased dynamics showing in the bass.? Just a thought. What are you playing through the c5? The cd? The 24/88 output through your source?
MacBook Pro playing the 24/88.2 file via Audirvana Plus -> ODAC -> splitter -> C5 and C5D -> HS2 box -> K 701.

The K 701 has more rumble for me with the C5D. It's slight, but noticeable for me.
post #2417 of 2646
Quote:
Originally Posted by miceblue View Post


MacBook Pro playing the 24/88.2 file via Audirvana Plus -> ODAC -> splitter -> C5 and C5D -> HS2 box -> K 701.

The K 701 has more rumble for me with the C5D. It's slight, but noticeable for me.

could you elaborate in the comparison, with "both bass boosters on"?

 

any other reference with other headphones or in-ears?

 

i did a comparison myself the the other day, but i wasnt able to match the specs with the line in, as i was on a impromptu situation. thanks!

post #2418 of 2646
Quote:
Originally Posted by slackerpo View Post

Quote:
Originally Posted by miceblue View Post

MacBook Pro playing the 24/88.2 file via Audirvana Plus -> ODAC -> splitter -> C5 and C5D -> HS2 box -> K 701.


The K 701 has more rumble for me with the C5D. It's slight, but noticeable for me.
could you elaborate in the comparison, with "both bass boosters on"?

any other reference with other headphones or in-ears?

i did a comparison myself the the other day, but i wasnt able to match the specs with the line in, as i was on a impromptu situation. thanks!
Yeah I can try that test later. I have the first generation of the C5, so the bass boost will be on maximum, and at low gain.
post #2419 of 2646

Just picked up a C5D.  It doesn't work with my stock Verizon S3 on 4.3, but I've tested the amp and DAC (using pc).  Using a pair of MadDog 3.2s for general testing, and ran it into an E/90 energizer to power the koss ESP-950s and it just works.  I haven't had an "ooo ahhh" moment, but I own a host of other neutral devices just no one as compact as the C5D.

 

Have to say this is a very capable device.  I've seen a lot of warnings about the amp's neutrality, but I am finding this to be a positive aspect.  The soundstage is very clear and high quality recordings show their merit.  It's really what I was hoping for considering all of the measurements JDS went through the trouble of recording.    This thing is great because it has dead quiet silence, and plays the music as it is intended.

 

I've read some comments about the amplifier lacking, and I have not experienced anything missing from my music or colored/distorted.  Maybe there is a bad pairing of headphones with some reviews?   Oh well.  Happy customer here. :)

post #2420 of 2646
Quote:
Originally Posted by Binge View Post
 

Just picked up a C5D.  It doesn't work with my stock Verizon S3 on 4.3, but I've tested the amp and DAC (using pc).  Using a pair of MadDog 3.2s for general testing, and ran it into an E/90 energizer to power the koss ESP-950s and it just works.  I haven't had an "ooo ahhh" moment, but I own a host of other neutral devices just no one as compact as the C5D.

 

Have to say this is a very capable device.  I've seen a lot of warnings about the amp's neutrality, but I am finding this to be a positive aspect.  The soundstage is very clear and high quality recordings show their merit.  It's really what I was hoping for considering all of the measurements JDS went through the trouble of recording.    This thing is great because it has dead quiet silence, and plays the music as it is intended.

 

I've read some comments about the amplifier lacking, and I have not experienced anything missing from my music or colored/distorted.  Maybe there is a bad pairing of headphones with some reviews?   Oh well.  Happy customer here. :)

 

what software you used? i tried it with my xperia zr on stock 4.3 with USB Audio PRO, and it worked flawlessly. cant say the same for the e18 though, i had to work it around for 10 minutes to make it happen.

 

for sensitive iems like my se535, the c5s works very well.

post #2421 of 2646
Quote:
Originally Posted by slackerpo View Post
 

 

what software you used? i tried it with my xperia zr on stock 4.3 with USB Audio PRO, and it worked flawlessly. cant say the same for the e18 though, i had to work it around for 10 minutes to make it happen.

 

for sensitive iems like my se535, the c5s works very well.

I refuse to use USB Audio Recorder PRO. Would rather buy another, more compatible, device than work with that trainwreck.

post #2422 of 2646
Quote:
Originally Posted by Binge View Post
 

I refuse to use USB Audio Recorder PRO. Would rather buy another, more compatible, device than work with that trainwreck.

yes, but this is Audio Player Pro, not Recorder Pro.  This one has compatability with many compressed and loss-less formats that the RP lacked.  UI still suck without folder recognition, but it lets you hook up to external DAC.  No others can do that, so it's this or nothing for external DAC. 


Edited by SilverEars - 3/30/14 at 12:24pm
post #2423 of 2646
Quote:
Originally Posted by SilverEars View Post
 

yes, but this is Audio Player Pro, not Recorder Pro.  This one has comparability with many compressed and loss-less formats that the RP lacked.  UI still suck without folder recognition, but it lets you hook up to external DAC.  No others can do that, so it's this or nothing for external DAC. 

 

yeah, its a shame that Audio Pro, isn't as known and still lingers behind the shadow of Recorder Pro.

 

it is a very competent player as it is though, like you said, a lot of work to go through still.

post #2424 of 2646
Quote:
Originally Posted by SilverEars View Post
 

yes, but this is Audio Player Pro, not Recorder Pro.  This one has compatability with many compressed and loss-less formats that the RP lacked.  UI still suck without folder recognition, but it lets you hook up to external DAC.  No others can do that, so it's this or nothing for external DAC. 

I'm sorry- they are both terrible options.  There are devices out there which do not have this restriction, and I'd rather have something that works completely.  The reason I went with the C5D was because there are compatible devices, and I wouldn't be forced to use slow-feature lacking DAPs which plague the portable market.

post #2425 of 2646
Quote:
Originally Posted by Binge View Post
 

I'm sorry- they are both terrible options.  There are devices out there which do not have this restriction, and I'd rather have something that works completely.  The reason I went with the C5D was because there are compatible devices, and I wouldn't be forced to use slow-feature lacking DAPs which plague the portable market.

I believe the Note 3 doesn't need a software to connect to a external DAC, correct me if I'm wrong.  Not sure what others, possibly G2 also?  iphone only needs a camera connector kit for the C5D, but not sure about others.

post #2426 of 2646

Does anyone know if the C5 pairs well with the Denon D2000's?

post #2427 of 2646

I can't find any information on the Amp the C5D will take when charging.

 

I have USB .5A

a 1A usb phone chargeer

a 1.5A usb phone charger

and a 2A usb phone charger

 

 

Are all these safe to use?  I am guessing yes?


Edited by Cosmic Owl - 4/3/14 at 2:26am
post #2428 of 2646
Quote:
Originally Posted by Cosmic Owl View Post
...

Are all these safe to use?  I am guessing yes?

 

Yes, they are.

post #2429 of 2646

While using the 5CD over UAC1, I am noticing a quality difference when playing a 24/96 file on my computer using VLC vs the same file on my Note 3 which also plays it at 24/96.

 

The file being Muse - Follow Me Flac.

 

Using my computer + vlc just sounds a lot better.  When using VLC I hear all the different parts of the song grab me and demand to be listened too, while from my Note 3 I find myself trying to listen and see if I can hear the same thing.  I have done 15 random blind swaps over the space of 2 days and I can always tell which one is the better sounding one to myself(vlc on the computer).

 

Trying to figure out what is going on here.  Any thoughts?  I am no expert.  VLC has no equalizer changes or other effects enabled.

 

The only variables I can think of is maybe the Galaxy note 3 limits UAC1 somehow? Or the players I'm using on the note 3 are causing it?  Or the mini to micro USB cable is creating such a variance then the longer USB - mini cable supplied with the C5D.  


Edited by Cosmic Owl - 4/3/14 at 7:31pm
post #2430 of 2646
Quote:
Originally Posted by Cosmic Owl View Post
 

While using the 5CD over UAC1, I am noticing a quality difference when playing a 24/96 file on my computer using VLC vs the same file on my Note 3 which also plays it at 24/96.

 

The file being Muse - Follow Me Flac.

 

Using my computer + vlc just sounds a lot better.  When using VLC I hear all the different parts of the song grab me and demand to be listened too, while from my Note 3 I find myself trying to listen and see if I can hear the same thing.  I have done 15 random blind swaps over the space of 2 days and I can always tell which one is the better sounding one to myself(vlc on the computer).

 

Trying to figure out what is going on here.  Any thoughts?  I am no expert.  VLC has no equalizer changes or other effects enabled.

 

The only variables I can think of is maybe the Galaxy note 3 limits UAC1 somehow? Or the players I'm using on the note 3 are causing it?  Or the mini to micro USB cable is creating such a variance then the longer USB - mini cable supplied with the C5D.  

 

Might be the music player app you're using in Note 3 that's giving you less than ideal audio quality. Neutron and USB Audio Recorder Pro are highly recommended among the list of players available. 

There's a dedicated thread for Note 3 users here:
http://www.head-fi.org/t/678952/samsung-galaxy-note-3-24-bit-192khz

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