the M1/101 combo on its own should be producing earth shattering volume in a normal room at full volume, this suggests that the signal to the preamp is not fully driving the preamp, have you tried a standard analogue source? or a different input?or your 101 is not producing full output.

Rgds
Stuart


Last edited by StuWils; 2017-12-09 16:01. Reason: added text
Linn LP12, Ittok LV11, Arkiv, Linn Kairn as a phono stage, MPmax 221, DSP6000's, WiiM Pro streamer.