NEWB - Tube preamp for class d amp (hifi)

shr00mslayer

Active member
Dec 20, 2022
4
1
25
I have an Aiyima A08pro class d amp. It has a 3.5mm AUX variable output I have connected to a powered sub-woofer. The amp volume controls volumes for the entire 2.1 system simultaneously. My question is what will happen if I add a tube preamp ahead of the A08; i.e. where is volume controlled? It seems to me that turning up the A08 as loud as I'd ever want it would do the trick, then using the preamp volume itself would raise volume across the 2.1 system uniformly. Is that right? Thanks!
 

Gray

Well-known member
Is that right?
Yes.
It wouldn't change any uniformity that you currently have.
You might be able to set the A08 volume control to maximum (effectively bypassing it) and treating it as a power amp for the preamp.

But your idea of pre-setting A08 to a lower level would work - see how experimentation goes.

Just remember the power sequence rule with pre / power amps:
Power up - preamp first.
Power down - power amp first.
 

shr00mslayer

Active member
Dec 20, 2022
4
1
25
Thanks Gray - So far the tube amp working great! Picked up the Schiit Vali 2++ and now experimenting with tube rolling :). Appreciate the help here and sorry for the delay in acknowledging!
 
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