An input stage comprising a differential amplifier in the form ... Dyer, “Simulation of Vacuum-Tube Triodes in SPICE: Nonlinear Models,” Electronic Design. 8. “Heathkit Manual and Schematic ...

This amp design uses a plate voltage of 12, although the 12AU7 can handle up to about 330. Since the 12AU7 is of the Twin Triode variety, one tube can be used to amplify both a left and ...

There’s a mystique among both audiophiles and musicians about vacuum technology, thus having a tube amp still carries a ... a fairly inexpensive build. The design is inspired by the guitar ...

It utilized four EL34 output tubes, one GZ34/5AR4 rectifier ... have gone out of production). “The amp can be restored with ...

Dyer's article on simulation of the 12AX7 and the K2-W vacuum-tube op amp. 1. The model for the K2 ... please subscribe to our Electronic Design Today newsletter.