Massdrop CTH + SDAC DAC/Amp

Massdrop CTH + SDAC DAC/Amp

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Product Description
The Massdrop CTH + SDAC DAC/amp brings two of the community’s favorite designers together in one affordable, easy-to-use package. It features the Massdrop x Alex Cavalli Tube Hybrid Amp (or CTH), built from the ground up by the founder of Cavalli Audio—a legend in the world of headphone amps Read More

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savageastr0naut
0
Apr 25, 2021
The rear audio jack works, which means the DAC is working. However, the front audio jack does not output sound anymore, regardless of if the input switch is pushed in or extended out. Therefore, I believe the AMP portion is not working correctly. IDK if the input switch is jammed or broken, resulting in the AMP portion of this product to be disabled, or what exactly is wrong with this product - but the AMP does not work anymore. The weird part is that it was working perfectly fine up until yesterday. TLDR - the AMP portion of this product is not working. If anyone has an idea for a fix, then please comment. Otherwise, I think the only other option is to see if Drop will send out a replacement unit... wish me luck.
Airwtw
1
Feb 20, 2021
I’ve purchased this dac /amp and used it for quite some time with my Sennheiser 6XX. Recently picked up a pair of Meze 99 Noir as well, and with this pair of headphones there is a hissing that is constant whenever plugged into the headphone port. There is no hissing when plugged into the rear 3.5mm jack, I do not experience this hissing with the 6XX, and have tried multiple different cables. Anyone have any ideas?
(Edited)
Nochocheez
0
Apr 3, 2021
Just had this happen to me. I don't know a lot about audio gear compared to some other people, but the conclusion I came to was that the sdac was made for high impedance, reference headphones, like the 6xxs. The meze 99s are low impedance, meant for mobile hardware/low impedance amps/dacs. I'm guessing that's what causes the hissing.
Prosad
2
Oct 28, 2020
So mine started acting weird. If I increase the volume it stops working and comes back after a few seconds. thought I blew a tube but that doesn't seem to be the case. Check the wall wart and its plugged in correctly.
rastus
1236
Oct 28, 2020
Likely the tube is saying goodbye... they can fail in odd ways “vocally” before total kaputz... a nice NOS one will be upgrade from stock.
(Edited)
WillJC
0
Sep 16, 2020
I got this product 3 months ago and have been using it ever since. The sound is quite nice. However, just recently, connectivity issues start to occur. None of my devices can recognize the SDAC. Does anyone face similar problems? May I ask what are some possible solutions? Is it a hardware problem?
kisvari.david
2
Oct 30, 2020
I have the same issue here. Tried several PCs, operating systems, cables, HUBs and it looks like the SDAC is defective. It's shown as available in audio devices, but completely mute on both the CTH's headphone out and the 3.5 jack of the SDAC. I'm a 100% sure it is a hardware failure and only affects the SDAC, CTH is working fine on the analogue input. It's a pity that you can't buy this internal card separately, so no matter if you've had a CTH+SDAC once it'll stay a "simple" CTH forever because of this. I've got mine second handed and it makes me sad that I have to find an external DAC for this great amp because of this.
kisvari.david
2
Oct 30, 2020
Since I can't buy a spare SDAC card to replace my defective one I sent it to a guy who can hopefully repair it. If he suceeds I'll let you know. The most likely cause of this issue is that the AK DAC chip is dead, or in better case the output opamp is defective. We'll see (hopefully).
Tompie913
9
Aug 6, 2020
Is there any particular danger in using IEMs connected to the DAC output on the back? Unfortunately this is too noisy for IEMs (or really any easy to drive headphone) so for them I have been using the rear output which is more than powerful enough to drive most IEMs.
vernities
0
Jun 30, 2020
For those that have static noise coming out of the tube, cut a small piece of aluminium foil (use for baking and stuff) and wrap around the tube with shiny part outside. Once I did that, no more static noise. Hope that work for you too. https://imgur.com/dXhr4kS
noom5150
2
Jun 22, 2020
Can anyone help? I have owned CTH+sDAC over a year, recently my unit cannot connect via USB on my laptop. Any advise, I also send email to support over a week but no reply yet.
WillJC
0
Sep 16, 2020
It also happened to mine. It all works fine previously. But the USB basically failed overnight. And I’ve tested it on numerous devices, so it’s not a problem of the socket.
malin.reindeer
13
May 1, 2020
Something I dont like and understand about the design: This is not a very small portable unit having micro USB inputs to save space. Why not USB A or B or C?
(Edited)
aphidhair
0
Apr 26, 2020
I just got mine and connected directly to a cd player, but at around the 10 o'clock position on the volume the sounds distorts and it shuts off and turns back on. Is this normal? Anybody have this issue?
aphidhair
0
May 1, 2020
Hmm. I've used it with my laptop as well-- the same problem happens there as well: when I raise the volume to a point where it's loud (not extremely loud) while playing music and it distorts and then the amp shuts off/turns back on. I running this with Senn HD6xx's. Maybe the headphones simply can't be played loud?
quicklytoo4
403
Jun 16, 2020
when I used a soundcard (better dac than the integrated) having the soundcard above 50% would overload this amp if you can lower the source volume and just increase the amps volume that will probably help
file1man
4
Apr 26, 2020
If I'm going from using a computer sound card which gives positional sound of either 5.1.or7.1, especially usful in gaming, this usb in gives dirty, distorted sound in and no positional 5.1. When we come in from the computer by usb. so garbage in, garbage out. Or does the dac clean the sound interference up.
(Edited)
MaxsVideos
5
May 1, 2020
If you connect thru USB I think your computer will output audio to this DAC, which means it's going to bypass your sound card. In order to use your sound card you have to connect directly to the jacks (they're probably 3.5mm jacks so you'll need something like a 3.5mm to RCA cable) on the sound card using audio cables rather than USB. But in that case, you would be bypassing the DAC inside this product and using only the "amp"
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