"Dear Maestro: Regaring the YJM Marshall, I wanted to take a minute and tell you how grateful I am for the spectacular work you did on basically building me a new amplifier. It sounds nothing like the original amplifier and I can tell you that is a positive thing! It sounds magnificent. Maestro, it’s as if you resurrected an old vintage amplifier from the ashes. My newly improved Marshall YJM 100 W amplifier now sounds like an old plexi but with a Van Halen attitude. I thank you from the bottom of my heart for giving me this beautifully wicked sound machine. moreover, it plays so fantastic with any pedal I put in front of her. Thank you again and keep on rocking! Your Fan for life, Rick "