JDS Labs C5/C5D (pg96) portable amp/amp+DAC
May 24, 2018 at 2:47 AM Post #3,391 of 3,417
How audible is the noise floor on the line-out of a modified C5D compared to that of the headphone out? I'm getting a bit of hiss out of very sensitive IEMs from the headphone out and want to try hooking the C5D's DAC up to a cleaner amp, but I'd like to know first whether it would be worth doing so.
 
May 24, 2018 at 3:22 AM Post #3,392 of 3,417
How audible is the noise floor on the line-out of a modified C5D compared to that of the headphone out? I'm getting a bit of hiss out of very sensitive IEMs from the headphone out and want to try hooking the C5D's DAC up to a cleaner amp, but I'd like to know first whether it would be worth doing so.
Can the C5D be modified to have a line out then? I am not aware of this, it doesn’t have line out as stock!!
 
May 24, 2018 at 8:20 AM Post #3,394 of 3,417
It can be done. There is some program and requires Arduino connection. I never tried it as I really didn't want to brick it trying.
Thank you. Just looked it up and it is possible, but it permenantly changes the line in to a LO, not what I was hoping which would have been ‘max the volume to change the HO to a LO’. This is what I was excitedly thinking when I see your post.
Nice to know though.......
I hope somebody can answer your question, as personally I do not hear any hiss with the C5D. Can anybody chime in???
 
Jun 21, 2018 at 10:02 PM Post #3,395 of 3,417
...can somebody out there help me with the power output of this thing? The specs are listed in VRMS, and I would love to know how it compares to other devices that list in mw. Really looking for something that can go further than my little Fiio Q1 and have looked at the Fiio e18, Xduoo XD05, maybe even something like the ifi xdsd...this could be a real winner for me, I just need to see how the power lines up and compares.

Would love to know how this translates compared to the mw ratings that it looks like everything else goes by(even the objective 2???):

Max Output @ 600Ω 4.146 VRMS
Max Output @ 150Ω 3.580 VRMS
Max Output @ 32Ω 1.182 VRMS

EDIT: read through this thread...so confused at how the mw translations are so low. I mean, if I am after something powerful that will leave me some volume and headroom, would something like the C5D be a bad fit verses say, a Fiio e18 rated 306mw @32 ohms or the Xduoo XD05 rated 500mw @32 ohms?
 
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Jun 24, 2018 at 6:43 PM Post #3,396 of 3,417
...can somebody out there help me with the power output of this thing? The specs are listed in VRMS, and I would love to know how it compares to other devices that list in mw. Really looking for something that can go further than my little Fiio Q1 and have looked at the Fiio e18, Xduoo XD05, maybe even something like the ifi xdsd...this could be a real winner for me, I just need to see how the power lines up and compares.

Would love to know how this translates compared to the mw ratings that it looks like everything else goes by(even the objective 2???):

Max Output @ 600Ω 4.146 VRMS
Max Output @ 150Ω 3.580 VRMS
Max Output @ 32Ω 1.182 VRMS

EDIT: read through this thread...so confused at how the mw translations are so low. I mean, if I am after something powerful that will leave me some volume and headroom, would something like the C5D be a bad fit verses say, a Fiio e18 rated 306mw @32 ohms or the Xduoo XD05 rated 500mw @32 ohms?
my previous amp was fiio E12, c5d is a much refined amp and it drove the akg k702 well without any problem. in every ways it was superior to e12. I really dont know if that numbers really mean anything to popular difficult headphones.
 
Jun 24, 2018 at 6:47 PM Post #3,397 of 3,417
my previous amp was fiio E12, c5d is a much refined amp and it drove the akg k702 well without any problem. in every ways it was superior to e12. I really dont know if that numbers really mean anything to popular difficult headphones.
Yeah...this is what sort of kills me in a way when it comes to measurements and trying to figure out how one amp compares to others; I'm starting to realize that it's not so cut and dry.
 
Jun 24, 2018 at 6:55 PM Post #3,398 of 3,417
Yeah...this is what sort of kills me in a way when it comes to measurements and trying to figure out how one amp compares to others; I'm starting to realize that it's not so cut and dry.
I think c5d's right rival will be a leckerton audio porable or oppo ha 2 se or something above, not the fiio e18 or below. I would only be looking at fiio's q5 instead of older models if I need refinement. i sold my c5d months back, as I dont listen much on headphones now. c5d had an unique tonal neutrality which sounds thin, but in comparison fiio sounds coloured. In an amp thats something I personally do not like.
 
Jun 24, 2018 at 8:32 PM Post #3,399 of 3,417
I think c5d's right rival will be a leckerton audio porable or oppo ha 2 se or something above, not the fiio e18 or below. I would only be looking at fiio's q5 instead of older models if I need refinement. i sold my c5d months back, as I dont listen much on headphones now. c5d had an unique tonal neutrality which sounds thin, but in comparison fiio sounds coloured. In an amp thats something I personally do not like.
hey thanks, this is the sort of thing that I wanted somebody to chime in with. I'm going to give this a big consideration since I'm after something more powerful; the only thing that I don't like about it is the digital volume buttons vs having a knob that's labeled.
 
Jun 24, 2018 at 8:54 PM Post #3,400 of 3,417
I've had a c5 for a long time. Still going strong even today. It's powerful as hell compared to my older fiio E11. Also it's got the best damn bass-boost I've ever heard. I've never heard any hiss from it with my jh16 or kaiser encores, and the encores are really sensitive. If you're wearing iems, and want ****ing good bass, you can't go wrong with c5D. to me, it's neutral sounding, but probably not the highest resolution I've heard, but just as good or better than other fiio amps.
 
Jul 17, 2018 at 11:07 PM Post #3,401 of 3,417
I repaired my JDS Labs C5, posted it to them through DHL. Pretty good service from them. They are quick to act, very well mannered, and considerate of my requests. Within just 2 days they managed to fix my amp and replace the battery. The best part is, the amp was well out of warranty. You just can't go wrong with them.
 
Jul 20, 2018 at 2:57 PM Post #3,402 of 3,417
hey thanks, this is the sort of thing that I wanted somebody to chime in with. I'm going to give this a big consideration since I'm after something more powerful; the only thing that I don't like about it is the digital volume buttons vs having a knob that's labeled.
I have the opposite feeling for the same. My fill e12 had channel imbalances at certain volume levels which is typical of analogue controls. This is robust. But you won't know the level at which it is playing.
 
Aug 20, 2018 at 2:51 AM Post #3,403 of 3,417
I am considering getting a c5d or the ifi black label nano. Any opinions or advice?
 
Aug 20, 2018 at 1:35 PM Post #3,404 of 3,417
I am considering getting a c5d or the ifi black label nano. Any opinions or advice?
I used to have the C5d for months, sold it because I’m addicted to sidegrading... I ordered the iFi and returned it. The only weakness of the c5d is that it doesn’t output line level so it cannot be used as a DAC. Which would be a problem only if you intend to use it to feed more “serious” amps. The iFi does support that, and it has some more great functionalities... which I didn’t need. And it doesn’t sound as good as the C5d, to my ears anyway.
But that’s just me. The c5d is comparable to a ODAC + C421 combo which I used to love. The sound sig really grew on me.
 
Oct 6, 2018 at 5:01 AM Post #3,405 of 3,417
I already tried that. The adapter and the USB connector make for a long stretch.







Hi everybody...!
I know that this is a very old post and there haven't been any messages for quite some time but if somebody could give me some advice it would be greatly appreciated...!

I have been using a C5D amplifier with my first ten iPod touch but the latter has been getting so many problems with its 40 pin connection that OI’m giving up home and have been wondering if I could use my amplifier with my old iPhone 5 which runs on iOS 10.3.3

I have purchased the official camera to lightning cable as well as the USB adaptor and connected my amp to the iPhone as per Jim Sexton’s instructions but it doesn’t seem to work as I’m only getting sound from one of the earphones….

Any recommendations or advice as to what may be wrong…?

I may have to end up getting a dedicated music player but that will probably mean saying goodbye to the C5D amp which i adore…!

Many thanks for your time in advance…! :)
 

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