Does anyone have experience with TVC (Transformer Volume Control) as a pre-amp with Pass Labs power amp, like XA30.5?
AVC & Input Selector for Papa’s Koan M2 ; temporary case ? | Zen Mod Blog
not exactly TVC but AVC
though , I'm finding them less critical then TVC
not exactly TVC but AVC
though , I'm finding them less critical then TVC
Hi,
Thanks. How does it sound (with or without a buffer), both in itself and compared to active preamp?
Thanks. How does it sound (with or without a buffer), both in itself and compared to active preamp?
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)
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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