Are passive preamps better?


Does a passive preamp with transformers so that its impedence can be matched with an amplifier have the potential to provide better sonics than a line preamp? I have a Simaudio Celeste preamp and a Harman Kardon Citation 7.1 amplifier. Lynne
arnettpartners
Eldartford,

My exact comment about passives:

Zero gain, zero contrast and zero dynamic enhancement from the original signal.

Isn't zero dynamic enhancement the opposite of improved dynamics?

I don't consider great gain, improved dynamics, vivid contrast and improved bandwidth as distortion.

My meaning was clear and exact in both situations. You seem to be more interested in taxing peoples comment with semantics than contributing to the knowledge base.
Albertporter...Just as tube circuits are known to modify the incomming signal by generating harmonics which some think are pleasant, I am suggesting that the extra circuitry of an active preamp may be doing the same thing. I think this is an idea to consider: not just semantics.

Of course "great gain, improved dynamics, vivid contrast and improved bandwidth" is not distortion. But these do not "enhance" (add to) the input signal. They preserve it. Anything added is distortion.
Of course "great gain, improved dynamics, vivid contrast and improved bandwidth" is not distortion. But these do not "enhance" (add to) the input signal. They preserve it. Anything added is distortion.

Inaccurate, a preamp always adds something to the signal, it's an amplifier. The question becomes one of improved sound or not.

Albertporter...Just as tube circuits are known to modify the incomming signal by generating harmonics which some think are pleasant, I am suggesting that the extra circuitry of an active preamp may be doing the same thing.

Tube or transistor, both add to the signal, nothing is perfect. It then becomes a question, do the benefits outweigh the negatives?
I will show my ignorance (more of it). If impedences are an issue with passive preamps, then are they also with active preamps? Lynne
Sure. Especially when you match most tube pre-amps with SS amps. One must be careful to make sure the pre-amps output impedence is sufficiently low to properly drive SS amps which often have low imput impedences.