Bypassing A Preamp With Volume Pot In Amp

Must be some special pot.

Lse, it's not a pot (potentiometer).

It's just like a direct connection between source and power-amp with none of the contacts or preamps active components in the signal path, like a pots very lightweight wiper contact or switched resistor pots contacts in the signal path.
It's just a single fixed soldered resistor, that just happens to be able to change it's resistance value by being light sensitive.

It's the most transparent, uncoloured, dynamic way of getting the signal of the source to the power-amp, without any active tube or solid state components or contacts in the signal path.

You can read all about in these two threads.

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1276356977&&&/Lightspeed-Attenuator-Best-Preamp-Ever-

http://www.diyaudio.com/forums/analog-line-level/80194-lightspeed-attenuator-new-passive-preamp.html

Cheers George

I've installed a Goldpoint stepped attenuator in my amp and soldered my interconnects directly to it. My CD player and phono pre have no trouble driving the amp.

Correct Jetrexpro, nearly all sources these days have output voltages higher than what the maximum input voltage is needed to drive amps into full output.

So there is no need for preamps with gain.
And if you have a source with low output impedance (<200ohms) as well, which most are anyway. All you need is a passive volume control, does'nt matter if it's inside the poweramp or outside connected by a meter of quality low capacitance (which most are) interconnect.

Cheers George

«Georgelofi» LSA acts as a conventional resistance, with respect to the set of impedances?
Changing interconects not scare me, but adjust the volume behind the amp, yes. Unless you have great discipline when it comes to listening volume.