Advice on Quad power amps.

[Bigman80]

Hi oliver and Martin
The newer revised board is identical in layout and components used just a fraction smaller.

I have 3 of the later smaller boards and my last build which i now run sound just the same as the bigger board.

Steve

Thanks Steve. I knew you'd be along to clarify

Sent from my VKY-L09 using Tapatalk

[Mikeandvan]

Nah you want to try a DCB1 passive buffer - keeps the clarity of the passive but adds that little bit of bite and punch.

The guys over on PFM seem to like it too, silly question, does it have its own volume control? Or must you get another box?

[STD305M]

Hi Mike
A dcb1has a volume control, you don't need another box.

Forgot to mention, there was a version with 6 input relays too. I never tried that version, never had the need.
S

[Light Dependant Resistor]

Nah you want to try a DCB1 passive buffer - keeps the clarity of the passive but adds that little bit of bite and punch.

Suggesting it is less than accurate ?

[Macca]

Suggesting it is less than accurate ?

Possibly, although doesn't sound like it. Differences in the character of recordings are obvious so it can't be too far off.

[STD305M]

Possibly, although doesn't sound like it. Differences in the character of recordings are obvious so it can't be too far off.

Personally i have found pure passives to lack drive and have a laid back bass presentation.
Just my experience with many passive pre.
NOT so with the dcb1
S

[Macca]

Personally i have found pure passives to lack drive and have a laid back bass presentation.
Just my experience with many passive pre.

IME depends on how good the match is with the power amp. I know on paper it should not matter but in practical reality it does, albeit the effect can be subtle. With a good match you don't get that but seems to be pot luck unless the power amp was specifically designed to be used with a passive. DCB1 seems to negate that issue whilst retaining (most of?) the transparency of a passive.

[Mikeandvan]

Considering the Velleman 8020, valve pre.

[Light Dependant Resistor]

Considering the Velleman 8020, valve pre.

It too has a potentiometer connecting audio signals, consider removing the potentiometer from the audio signal path altogether.

[Mikeandvan]

Velleman on the way, also just got the Khozmo advertised on here, gonna try both in my system for a while, at £200 each, its no big deal.