Tubes Audio Mirror PP1


I just purchased a audio mirror pp1 in fantastic condition, I had one a few years back had to return it as it was slightly damaged but had a chance to listen to it, and now have it back.My components have changed since then and so has the sound.I know there are 7 tubes inside I believe they are stock tubes.Looking for a little more smoother sound(treble) to compliment my coaxial driver.My speakers are 96db and at the moment can't get the volume control past 1/4 turn even with 40 watts per.I have purchased a pair of genelex gold lion ax7 but as I just found out have all the gain I need, I am ok with that if the sound is smoother.Any suggestions would help and where to place the tubes as there is a phono section in the pre, trying to improve the output.
Thank You.
128x128hocheye

Showing 3 responses by roberjerman

Avoid imitation current production tubes.Nowhere near as good for sound quality and longevity as original NOS tubes! Even used vintage tubes are a better choice than fake Genelex, Mullard, Tung Sol ...
What power amp are you using? I am guessing that the Audio Mirror PP1 is a tube preamp, correct? If so, it is overdriving the amp by not allowing you to use more of the volume control's range. Try replacing the input pair of 12AX7's with a pair of 12AU7's for lower gain. This should allow you to use more of the control's range, up near 12 o'clock.
Try to find a pair of old NOS 12AU7's. Any from the 50's, 60's, 70's. GE, Sylvania, RCA's will work just fine!