Then this is the back side? https://cdn03.dcfever.com/media/trade/18/10/12/20/226974_1539346637_2_sq.jpg https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSTDxZEKydGtzYyb2u5EmiNHF9SIzatFuLxMzkobhs&s=0 Just photos that I have found online. Don't see a power input here - or an earth for the t...

Hi Mark,

The P50 was the same with phono.

Yes, it makes a big difference. I used 4 x 300 va