Another person you can contact is Michael Bettinger and GasAudio.net. Mike is a great guy to work with and knows GAS and Sumo amps really well.
You could also ask David from davidsaudio.com for assistance.
His info has a lot of info about Sumo, GAS etc etc. I've corresponded with David in the past and he was really nice about questions.
Good luck with the search.
You could also ask David from davidsaudio.com for assistance.
His info has a lot of info about Sumo, GAS etc etc. I've corresponded with David in the past and he was really nice about questions.
Good luck with the search.