Hi everyone, I have a Michell Gyrodec with SME IV tonearm and Ortofon 2m Black which is connected to a Lehmann Black Cube se ii pre-amp, which in turn is connected to my Hegel Röst. All through the last few years I have had an imbalance problem (left channel weaker, especially when seen on Adobe Audition). I have tried everything: setting up and re-setting up the turntable, levelling it, then replacing elements. Cartridge: It was a Bronze at first, then I acquired a Black. Same problem, even slightly worse. Tonearm and turntable: I had a Project xperience acryl. Now I have a Gyrodec. Same problem. Pre and amp: I used to have an Aura Vita with integrated phono stage. Now I have the setup I listed above. Same problem. Believe me I have tried everything. Somebody on another forum hinted that it might be a short problem accross my left channel. I was not sure before this weekend, when I connected my turntable to an old AKAI AM2400 I had upstairs (40 years of age!). Surprise! The imbalance was gone. I tried again with the Lehmann + Röst: the imbalance came back. Therefore I very cautiously connected an mp3 player to them, to see if that was an ongoing issue that had inexplicably escaped me through the last two years. But everything was fine. So it seems my turntable IS able to read vinyls perfectly in the end. And that the real problem lies with its interaction with the preamp + amp. In addition, the fact that it had problems with the Aura AND my current setup (but not with the Akai) seems to indicate that modern wiring causes problems...? Has anyone had the same problem, and how can I solve it? Is it a grounding issue? Should I try linking my ground wire to something else than the pre-amp? Thank you very much for your help!