Designing, building, repairing, restoring and modding amplifiers and audio gear for over 30 years. Invented the Zero-Loss effects loop, now an amp industry staple, along the way. 

 Have long worked with George of Metropoulos Amplification, still do, other notable companies/techs and designers over the years. 

Hopefully info I put out there on forums/via countless emails over the years, calls and now a bit again here is still useful to some (-for information purposes only per usual).

-Steve/SDM

This site is not affiliated with Metro, Marshall, nor anyone else.