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Cheap ADC for headset

jesh

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Dec 4, 2018
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#1
I recently downsized my whole PC setup. I now have a job where I travel a lot.
I'm trying to sell my old stack and headphones.
There are some decent amp+DAC combos now, and I wanted to try one. However, my ModMic uses a TRS connector. If I want an amp+DAC that also has a headphone section, that really limits my options. The best ones I have seen seem to be the Schiit Hel 2 and the Mayflower ARC MK2.
If I could find a cheap and decent ADC to turn the TRS into USB, that would really open up my options. Does anyone have ideas?
 

Tks

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#2
Turn TRS into USB? How when one is analogue connection, while the other is digital? Or do yoy just mean an ADC in general? Motu seem to be on a roll with their M2 and M4. Or you can give the Hel 2 a shot, seems pretty decent judging by their specs.
 
OP
J

jesh

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Thread Starter #3
I mean like on Amazon there are a ton of small USB powered devices that take a headphone and mic input. If I knew what chip to look for, I could probably find a decent one for my ModMic. Maybe.
Otherwise, I feel could spend a lot of time and money trying to find something that makes my mic sound as good as just plugging it into my built-in soundcard.
Then I could get a nicer device than the Hel 2, because I wouldn't be worried about having a decent ADC section for my mic.
 

AnalogSteph

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#4
I mean like on Amazon there are a ton of small USB powered devices that take a headphone and mic input. If I knew what chip to look for, I could probably find a decent one for my ModMic. Maybe.
Yeah, it's always a bit of a crapshoot with these. But JFTR, Antlion are selling a USB soundcard as an accessory for the princely sum of $9.95 that they claim
[...] is the clearest audio adapter in its class for wired 3.5mm microphones. This small device supplies stereo output for headphones and an enhanced mic input that removes the majority of unwanted background noise and boosts mic volume.
Might be worth a shot?

You see, making a decent consumer mic input is neither super hard nor super expensive. The most important part is getting a clean bias voltage, which usually means you want to generate it externally with a few passives.
 
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jesh

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Thread Starter #5
I saw that and read reviews. That particular product seems like a bust. 2.93V instead of 5V and lots of complaints about noise.
Plugging the mic into my motherboard is not bad. There is more compression than I like, but it has a low noise floor and gets plenty loud. I listened to a clip of the Hel 2 on a cheap mic, and it sounds fantastic. (Hardware Canucks)
 
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