Dumb question......why do you need a preamp?

I have used active, passive and just volume controls on components. The best sound without question, for me, has always come from a active preamp. The most disappointing for me has been the performance I have gotten from several very high quality passives. 

I like minimum systems. So, one day I hooked my CD player directly into a top shelf stereo high-power amp. The CD had a volume level adjustment. It was just awful. You could almost hear the digital bits. I don't think anyone with a top system is skipping the pre-amp. 

I have 4 source components, turntable, tuner, SACD player and music server/player. I need a preamp. My 72 year old ears are not that good any longer, I use tone controls now. Never did before and that was dumb, suffering through some God-awful recordings because I was stubborn. I love my McIntosh preamp, blue meters and all.

@troutbum If you have an integrated amp you may not need a preamp.

But a preamp can be very useful if you have monoblock amplifiers. The reason is simple: the longer the speaker cable, the less resolution and impact you'll have out of the speakers.

Monoblocks allow you to keep speaker cables short. This might mean you have to run long interconnect cables to the amps. But if you have a good preamp, and especially if it is balanced line, that's no problem and you can have no loss in resolution or bandwidth doing that- no downside. A good preamp also reduces artifact you get from interconnect cables (usually this isn't a problem in an integrated amp).

Integrated amps usually trade off some sonic performance for size. You can see where this is going: the best systems often use monoblock amps with a preamp.

A good hybrid integrated amp can have a nice active tube line stage. Mine happens to have one employing a nice separate power supply and tranny for the preamp section. Very little sacrifice and in some cases none! It depends on the design of the integrated amp and the use of short signal paths.

Yes, monoblock amps can indeed have a sonic advantage. Not simply because you have a separate chassis, rather that plus the design. Some stereo amps can sound as good or better than monoblocks depending on the design. No absolutes, but rather case by case…..

With the advent of GAN and chip amplifiers one can certainly fit a good active, tube line stage in a nice integrated complete with extra shielding! I can see Ralph of Atma-Sphere building a great sounding integrated amp with an active tube linestage and his Class D Gan output in one larger chassis. I am sure it would compete with many expensive separates. Will we see that soon Ralph? 🤓