Chasing an audio artifact on power loss

Chasing an audio artifact on power loss (subalpinecircuits.com)

2026-11-12 Thu | 41 points by ireflect | original

[−]olelele · 2026-11-15 Sun 14:02 UTC · link

Hey cool device!

Seems like it sounds good to, from the demo video.

In hifi amps from 1980-94 or so they implement speaker protection with relays that switch out the speakers before the thump of turning on or off the psu.

[−]fnord77 · 2026-11-15 Sun 16:21 UTC · link

I was confused what an SA-01 was and I googled and it came up Casio SA-01 keyboard. But that's apparently unrelated to this project

[−]multjoy · 2026-11-15 Sun 16:38 UTC · link

https://subalpinecircuits.com/about/

>My name is Drew, I'm an engineer in Vancouver, Canada. I worked at Bandcamp for 13 years and now I build synthesizers and other audio electronics. My first product, SA-01, will be out in early 2027.

[−]PowerElectronix · 2026-11-15 Sun 18:26 UTC · link

I would still use mlcc for the bulk capacitance. Use 12V or 25V ones to not have to worry about voltage bias. You can get quite a lot of capacitance in 0805 these days.

[−]grmnygrmny2 · 2026-11-15 Sun 18:28 UTC · link

Okay, that’s a good tip! I freaked myself out and didn’t want to make another mistake on the next board, but it would be nice to stick with the MLCC.