I know this sound like blasphemy but the Boss GTs actually has freaking awsome preamp settings. I use the 4 cables method with my GT-8 ( firmware version 1.03 ) and a Randall Cyclone. I use the Cyclone preamp 70% of the time with my primary patches but the GT switches to use its own preamps seamlessing. I like tube amps but solid state has come a long way lately.

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