Hi,
Used https://blokas.io/patchbox-os/ o test mod devices “app”, liked it and went for the https://www.moddevices.com/moddwarf for guitar stuff.
My idea for zynthyan is more keyboard/synth oriented. I’m learning keys to try to get out of my guitar mechanics, more melody over chord changes instead gluing guitar licks. (you can do that on the guitar, but I’m been failing to accomplish that)
Best,
Adjustable Line input gain is donne via jumpers or inside thé codec chip using Alsa control ? Is that adjustment affecting both lines or Can be done independtly ?
The render images and the photo above in this thread are from the next prototype we are working on, but still haven’t closed the deal with HifiBerry for having customized soundcards nor mass-produced the alucases …
My fault! Sorry for the misunderstanding … you are truly attentive people
Yes. 2 balanced audio input with adjustable gain by software (no junmpers).
Note that currently, zynthian UI 's ALSA Mixer doesn’t allow to adjust the gain separately. You should do that with the alsamix CLI utility. Anyway, i will fix this limitation ASAP. It’s a high priority task over my desk
Must be as compact as possible, with no external hardware like DI box or so. “Less is more”, I like to Travel light
For the output lines, RCA is best choice: this solution has the best compatibility with common amplifiers and many entry level monitors.
For input lines, a combo XLR (for Dynamic balanced microphones like my SM58) / 6.35mm jack (wich could be balanced or not, knowing that the codec can provide, with Alsa software, a wide range of adjustable gain for different kind of instruments) is the more accurate solution, as I’m playing (badly) bass or guitar, and try to sing (even worstly, but there must be an auto-tune effect elsewhere ).
I own an USB interface (behringer umc204hd), wich is pretty good and fits really well my needs regarding its in/out equipment but:
It’s powered through USB, and that makes the Rpi suffering of underpower effects like xruns. Note that the Pi has to power a 7 inch LCD screen too, so maybe with a 3.5 spi display this problems will disapear, I don’t know yet.
Current v4 kits have RCA and it will be like this for a time.
Next release probably will lack the RCA output for improving ventilation slots and easing the zynductor mounting process, but … i really think this is a tiny problem with a very cheap, small and realiable solution: