TVC with Pass Labs XA30.5?

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Official Court Jester
Joined 2003
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it sounds good

it's for now without input buffer ; hopefully I'll put one soon

rest you can read there

active or no active - everything is in gain demands ( so - you either need or don't need gain from selector/volume box) and proper output/input impedance relations

if you choose by these reasons , there is no difference in quality between "passive" vs. active
for instance - there was some preamps on market having "passive" function up to some position of attenuator , and going active up from next attenuator position

if preceding stage ( source) is having low enough output impedance ( for me - under 150R) then you don't need buffer in front of AVC

output impedance of AVC gadget itself is dictated by preceding stage ,starting from 0 (when switch is on gnd-mute) going to preceding stage output impedance (when switch is on max)
 
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