... Should I be concerned?


Hello to all...

So here I am, back again, still trying to "tune" my budget rig to the max "best to me sound":

CD only setup with over 10 yr old Marantz SA8001, into a Tube Line-level preamp, into a Parasound HCA-750 power amp, with homemade speaker cables (12g solid core copper wire, twisted; bare wire on both ends), at back of speaker same wire bent into C-shapes as jumpers... Speakers are KEF Q1s (luv'um).

On the back of the Parasound, there are volume knobs (so you could use the amp direct without a preamp) which I have up full ( as recommended to me thru another topic line). When I play music, I have so little volume adjustment available: I can't really get past 8 o'clock (from starting at 7) without it being too loud... 

One question I have is: will I be degrading the sound if I " adjust" the volume pots on the rear of the power amp, so that I can have more control over the volume knob on the pre? I guess I' be shooting for a 10-11 o'clock on the pre, and I'll assume it means a great decrease in the setting on the power amp.

Could another tact be: to replace the volume knob/pot with an articulated one, one that would click increases as I turn it?

This may be a foolish question - but any info or suggestions (other than criticism or sarcasm) would be greatly appreciated... Best Wishes to all - Be Well.
insearchofprat
I have gain controls on my old Mac 2105 which I adjust frequently so that I cn keep the linstage volume up to a certain level, and I have no issue at all with the sound quality. My tech told also me that it has no effect on the peak power available from the amp. 
A suggestion: Turn the Parasound’s level controls all the way down and your preamp’s volume knob to where you want it, at what you desire as your highest/max position.      If you can choose, do this procedure in Mono mode.        Play what you know to be a CD recorded at a high level, with a good center image.      Turn each channel’s level control up (slowly) to obtain your highest, typically enjoyed, listening level/SPL, with a solid center image.      Listen in Stereo mode.        If you don’t like the sound: like knotscott said.....
It kind of depends on the quality and performance of the volume pot in your unnamed tube preamp.  It might perform much better at or beyond its midpoint.  So the improvement here might outweigh the degradation of the signal at the amp.  Only way to check is to try it both ways and see which you prefer (if you can hear a difference).
Again, the manual recommends all the way up.. If not you have to clean the pots every now and then. They are not the best pots, BUT that is a great amp. All the way up...

Regards
Am wondering: since there are 2-12AX7s and 2-EF86s - could I change and/or control the preamp gain by changing to equivalent tubes (ex: would switching to a 12AU7 instead of the 12AX7 make a diff)?