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RF-7 and Tubes


whatever55

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For quiet to moderate listening, SET works very well. I use a 3.5W 2A3 design and 8W 300B designs are available. For something you can feel as well as hear, and generally louder listening you'll probably want something using push-pull output. In that case I would recommend a design that has a "triode mode" option. Power is determined by how loud you listen. In any case, I strongly recommend you make sure the amp has 4 Ohm output capability and use that output. The 4 Ohm output will handle the RF-7s impedance swings better that a higher impedance (as in 8 Ohm, for example) output "tap."

Leo

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