Hi , guys , would be very grateful if you can help me to identify I/V opa place in this dac - there is 3x 2604AU op-amp ( green colour ) and
4x LME49720NA on the row
I wanted concentrate on the tube output - would guess that opa is for solid state output ? What would be the most effective sound wise opa upgrade - as I wanted to put Burson V6 for I/V place - could I get sonic benefit in other places ?
Regarding tube output - there is not enough plate voltage for 5670/396a/2c51c tubes to be used for optimum plate voltage - at the moment is around 77v - one option is to remove 150u 250v capacitor and voltage regulator L7806cv next to the tube and E13005 -2 transistor which could rise voltage to 120v ?
Very grateful if you can advice me . Val
4x LME49720NA on the row
I wanted concentrate on the tube output - would guess that opa is for solid state output ? What would be the most effective sound wise opa upgrade - as I wanted to put Burson V6 for I/V place - could I get sonic benefit in other places ?
Regarding tube output - there is not enough plate voltage for 5670/396a/2c51c tubes to be used for optimum plate voltage - at the moment is around 77v - one option is to remove 150u 250v capacitor and voltage regulator L7806cv next to the tube and E13005 -2 transistor which could rise voltage to 120v ?
Very grateful if you can advice me . Val
