Probably not. 6BQ6 is a TV sweep tube with a max screen voltage of 200v. Doesn't mean you can't use it as an amplifier tube, you just have to limit the screen voltage & dissipation.
https://frank.pocnet.net/sheets/093/6/6BQ6GTB.pdf
jeff
https://frank.pocnet.net/sheets/093/6/6BQ6GTB.pdf
jeff
It is impossible to answer the question without more information about where are you going to plug it.
6BQ6 or 6BQ5? These are two very different things. The 6BQ5 is the US version of the EL84. It is a 9 pin miniature tube and would require a socket adapter to be used in an octal 6V6 socket. They are both audio output tubes with similar plate dissipation ratings. The 6BQ5 draws nearly twice as much heater current as the 6V6, and would require a different cathode resistor to get the bias right,
The 6BQ6 is a TV sweep tube that oddly is pin compatible with the 6V6 if you connect a plate cap to pin 3 of the socket. It draws nearly 3 times the heater current of the 6V6, and biases up way different than the 6V6, and does need a much lower screen grid voltage. Despite all of this, I made guitar amps based on the 6V6 based Fender Champ circuit as a kit with a 6BQ6 output tube. I have also made them work in a Tubelab SSE amp board but they sound best when they are at their melting point. Note that these were "NOS" tubes that AES sold me. They were obviously dirty old tubes stuffed into non-matching boxes, so I intentionally fed them a little too much power. They can be made to work in push pull circuits if the extra heater current is available and some source of about 150 volts is available for the screen grid.
The 6BQ6 is a TV sweep tube that oddly is pin compatible with the 6V6 if you connect a plate cap to pin 3 of the socket. It draws nearly 3 times the heater current of the 6V6, and biases up way different than the 6V6, and does need a much lower screen grid voltage. Despite all of this, I made guitar amps based on the 6V6 based Fender Champ circuit as a kit with a 6BQ6 output tube. I have also made them work in a Tubelab SSE amp board but they sound best when they are at their melting point. Note that these were "NOS" tubes that AES sold me. They were obviously dirty old tubes stuffed into non-matching boxes, so I intentionally fed them a little too much power. They can be made to work in push pull circuits if the extra heater current is available and some source of about 150 volts is available for the screen grid.
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