[Radioroslyn]

Well the low volume issue is probably a bad phono cartridge. It could be a out of spec plate resistor on the 12AT/V6 but I doubt it. They are somewhat hard to find. This set more than likely uses one with two needles one for the 78's and the other for 45's and LP's. Make sure that you use the proper needle for the record you are playing. It may have an adjmt for the tracking weigh. This sets how much pressure the tip of the needle presses onto the record. Too much will cause premature wear to the record. This adjmt is located at the far end of the tone arm. Modern Records?????
Terry