Do preamps have a material affect on high level sources?


It would seem that a preamp is merely attenuating a DAC output. How can it alter the signal?
If it doesn't degrade the signal, would logic dictate that at best it has no affect.
Help me understand
vjpacor
Atmasphere, can you name a few, as I am sure your preamps will be on the list ? Isn't that a benefit of true balanced designs ?
The balanced Backert Labs Rhumba would be a good example. Any preamp that supports the balanced standard would do the same thing. That is one reason balanced preamps can sound better- you don't hear the effects of the interconnect cable. 
Mr. Decibel
+1
I have two preamps.  One cost a pretty penny.  If I go direct I am bypassing 6 tubes in the preamp.  That will definitely color one"s sound. How could it not?
It just sound so much "cleaner" going direct to monos.  IME. YMMV.
Mr. Decibel
+1
I have two preamps.  One cost a pretty penny.  If I go direct I am bypassing 6 tubes in the preamp.  That will definitely color one"s sound. How could it not?
It just sound so much "cleaner" going direct to monos.  IME. YMMV.