1 I believe some folks have missed the point in regards to the 'variable audio output' in your question. In most receivers that do indeed have either a tape out or a preamp out (RCA connections), you'll find that there is no variable output level. The output (line-level) signal at these connections are generally at a fixed level.
The volume level, balance and tone controls are handled in the power amplifier section - not the preamp section. You may need to do quite a search to find one with a variable line-level output. This may actually be handy if you plan on sending the audio output from your receiver to another power amplifier - say perhaps in another room; in this manner, you can control the sound level seperately using the 2 volume controls on the power amplifiers.
Hope this helps.
2 It just occurred to me that if your receiver has a headphone output, you could probably use that as a volume controlled line-level output. You would need a simple adapter from Radio Shack (to turn the 1/4" or 1/8" stereo jack into two RCA jacks. ) Volume controls on power amps?
I have never seen that. I have seen that on integrated amps (power amps with built in preamps), of course.
3 karlc - I have an NAD power amp with two volume controls (L and R), although it has no other controls. It was made in the early 90s, I think. The purpose was for direct connection to an audio source, in particular, a THX surround decoder.
I used it without the preamp to play a CD once. I couldn't tell the difference. However, I agree that it is an unusual feature.
I don't think I have seen another power amp that has them.
You take the signal from the preamp outputs, apply some kind of process to it (such as equalization), then send it back into the receiver to be amplified. A second purpose is to let you record the signal with a tape deck or some such while you are listening to it (the "tape monitor" function). The other purpose is to allow the receiver to be used as a preamplifier (or preamp), so you can use external amplifiers instead of the ones in the receiver.
So you can look for a receiver that has preamp outs. You can find them on sort of full-featured or upper end receivers. Here is one.
The other option is to simply buy a preamplifier and use external amplifiers.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.