Volume control


When I use my CD player through my tube preamp I turn the volume control no more than 9 o'clock on the dial. However when I connect my Oppo to the preamp I need to turn the knob of the preamp considerable higher. I also need to turn the volume up on the Oppo. If I connect the Oppo directly to my amp and bypass the preamp, I can reduce the volume setting on the Oppo.
Any ideas as what is causing the volume difference?
Thanks
elf1
elf1

Showing 1 response by elf1

Thanks for the response. My preamp is Audio Research SP6 and my CD player is a Rotel. The amp is Bryston 4B st. I do not know the sensitivity of the amp. My Oppo is model 105.