Low power

[jellentz]

Been working on my p35 if I hook my earphone line to my 100 watt Marshall it works great but on its own you cannot hear the last 5 high notes and it seems like all across the board the volume is on the low side checked the power supply ok any ideas

 

[Reuben]

I presume your Marshall is a guitar amp. Guitar amps are not deigned to be responsive to very low or very high notes so I would expect volume to drop off when it goes out of its intended mid (guitar) range. A stereo PA type amp or even any hifi sound system should work far better.