Hi! In case this is any help to anyone, here's one way (probably not the best) to mount the A-199's spring reverb tank in a G6 case: http://www.youtube.com/watch?v=dwHUFzGZ03c It sounds free from mains hum to me. :) All the best, Zoë.
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Mounting an A-199 spring reverb tank in a G6 case
2013-09-22 by Zoë Blade