Testimonial: “Dennis is a true craftsman. His work on my Marshall JCM2000 DSL head included an after market bias upgrade and tube replacement. The performance is really impressive with a whole new level of clean mid’s and low’s, along with significantly improved gain and super quiet! His prices are very reasonable and he takes customer service as seriously as he does all his technical work. One look at his shop and you’ll know how organized and skilled he is. I’ve used many others over the years and now have found the best!”