After a brief review of the history of the K2-W vacuum-tube op amp, an LTspice model is used to create its schematic in ...

Capacitor C1 is a Miller-effect capacitor. 2. The LTspice schematic of the K2-W op amp in a basic inverting configuration incorporates the symbol created for the K2-W model. The gain G is set to ‒1.

The casework is sturdy and solid, and the front panel rotary dials are smooth to use. Once we start playing music through it, we like how understated the Mission amp's sound is. Nothing sticks out ...