Hi,
I want to put some solid state circuitry into a tube amp (namely an opamp to get a cheap and simple low impedance line-out from between the tube stages).
The question is, could I use rectified heater AC (6.3 VAC rectified to around 8.8 VDC) and use that to power the opamp? The heaters would still be powered by AC, of course.
Is this a good idea, or should I forget it and throw in a 9V battery or use a wall wart instead? Would the heater AC somehow be disturbed by having a diode bridge across it?
I want to put some solid state circuitry into a tube amp (namely an opamp to get a cheap and simple low impedance line-out from between the tube stages).
The question is, could I use rectified heater AC (6.3 VAC rectified to around 8.8 VDC) and use that to power the opamp? The heaters would still be powered by AC, of course.
Is this a good idea, or should I forget it and throw in a 9V battery or use a wall wart instead? Would the heater AC somehow be disturbed by having a diode bridge across it?