amplifier with volume control

ieales865 posts08-13-2021 2:12am

The demands the input of an amplifier puts on a source is just like what a speaker puts on an amp

utter nonsense. This just flat out wrong. There is next to zero current required in the input of an amplifier. There is no dynamic impedance or flyback current. Like most of what MC says, PURE HOGWASH!

you will find out that a well designed pre amp will actually outperform a passive circuit with any type of dynamic music, something is lost going all passive

utter nonsense.
If the impedance and design are correct, a passive has less coloration than almost any active circuit. Some devices may not be capable of driving a passive, but that is not a fault of the passive.

+1
All the above is utterly correct, been saying it for years. And any audio technician will say excatly the same, so long as they DON"T have a vested interest in active preamps.

Cheers George

Many thanks. I'm going to try an amp with the volume control built in (my tech has an amp for sale with this).  This is a passive configuration and I would hope that, all things being equal, that having the attenuator built into the amp would be an improvement over a separate passive box with the additional interconnect.   After I try this I do intend, based on the comments in this thread, of auditioning an active preamp and comparing to the direct connection.  My only experience with active preamps is with an audible illusions and sonic frontiers anthem, neither of which impressed me - in other words I have never owned a high quality preamp.  There were several comments here that there are active preamps that maintain the transparency of a passive  while  of course adding dynamics. Which are they - I know the 2 I owned did not. Thanks again. 

I would hope that, all things being equal, that having the attenuator built into the amp would be an improvement over a separate passive box with the additional interconnect.

Nope. Bypassed many an input level control in studio amplifiers because they are redundant and color the sound.

If wishes were horses, beggars would ride

I keep forgetting that if you have a cheap passive with some suspect pot, all bets are off.

In the studio I used channel matched Penny & Giles. Don't recall the cost but it was a lot.

For my last HiFi stepped passive built a few years back, silver contact switches, precision, matched low inductance resistors, high quality internal interconnect and top flight connectors.

I used to be the one US dealer for the British TVC company Music First. Transformer Volume Control done to a high level with Stevens and Billington transformers. The Reference-$18k, Baby Reference-$8k and Silver-$10k are excellent. Especially the Silver. Surely, the transparency and clarity are superb. The Reference tranny uses about a mile of copper wire!
However, now use a top line Atma-Sphere MP-1. There is no comparison between great TVC and great active. The best TVC sounds threadbare. Only a great active preamp creates great music.