Try a set of single ended cables between the pre-and amp just in case you have a problem there. Either with the cables or the balanced outputs from the pre or balanced inputs on the amp. Also make sure the single ended/balanced toggle switches on your hpa2 are fully seated towards the input you want.
Please help with Levinson 380S Proceed
I just bought a ML 380s and a proceed HPA 2. I used good ballanced cabels and running to B&W Nautulus 805. When I turn up the volume with a cd playing or with a cd off, there is a fairly niticable buzz comng from the speakers. Could this be the amp or the pre? I tried switching inputs but it happens with any source. Also when I turn the volume knob at high levels, the increase in volume is not smoothe. each speaker randomly pops up and down volume levels. (very hard to describe) Could this be the amp or the pre? Any help is very appreciated. If there is someone out there who is very experienced with this and can help me please email me so I may be able to describe the problem in further detail. Any help is very much appreciated.