Property me a Pro-Ject Debut Carbon bought turntable with Ortofon 2M Red demTonabnehmer to my Harman Kardon AVR receivers and had to, because there is no phono input at receiver, preamplifier to buy land. The choice was the Hama PA506. Am fully satisfied with the device. There are ground according to the turntable no noise and no humming. Without grounding a loud hum was audible. Just a pity that there is no power switch off and the preamplifier. But'll think, directly connect the charger to the receiver to be there at the same Deactivating disable also the preamplifier so. Have made it and works well. No hum audible. can happily recommend the preamplifier in my view continue and would buy himself again.