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    DIY Tube Amp - 5F6A "Bassman" with 6550's

    Here's one for you all, my 1st attempt at building a bass amplifier, a Bassman 5F6A copy with Dual GZ34 Rectifiers and twin 6550 output tubes: I've seen plenty of guff on the internet that a bassman with twin 6550's isn't worth it, I beg to differ! 60 to 70 Watts of bass valve power!!!