Originally Posted by kamis
Low output MM cartridge? Is 3.5mv/5cm/sec MM suitable for HPS 6.1?
HPS 4.2 PC foil is also 1oz?
3.5mV is not a low output MM. Barring some possible exceptions, one should NOT use a bipolar amp with MMs. The noise current and the high impedance of the MMs are generating plenty of noise, to largely exceed the amplifier very low voltage noise. For MMs use 6.1, for low output MCs you can use either 6.1 or 4.2.
Yes, everything is 1oz. If something helps with dissipating heat that's the ground plane, and the copper thickness id pretty much irrelevant. Thick copper traces are useful for high currents. Does not apply here.