Run a balanced cable (XLR to XLR) from the Ono to the Alpeh P. This should give you 6 DB more gain, and probably a better sound to boot. Don't worry about turning the volume control all the way up on the P, you can't hurt anything.
Matching Sumiko SHO and Pass Labs Aleph Ono
My new PASS ALEPH ONO mates a SUMIKO SHO cartridge (2.4 mV output, 47k Ohms) with a PASS ALEPH P (the later one with the LEDs). At first, with ONO's standard MC settings, the SHO was almost too loud at the very lowest preamp volume/gain setting...and also got very shrill/grainy/distorted with energetic female singing, instrumental attacks, etc. I changed ONO's internal setting to MM and 100 pF...now sound is very smooth and relaxed, maybe a bit less detailed...but I use up ALL the volume/gain control on my ALEPH P getting the sound levels I like. Though PASS manual doesn't mention anything, are there any other MM gain adjustments inside the ONO I can make...so I can have some semblance of "preamp control" over sound levels I really don't want to change to bigger amps (Pass Aleph O's) or more efficient speakers (Alon V's). Thanks.