TRIDENT: A-Range Channel Output Amplifier

Trident channel amp schematic 824211dabc75

After some success with the Trident mic preamp (AKA the Revox A77 Preamp), I thought I might try another section of the console – this time the EQ / Channel output amplifier. It looks interesting on LTspice, as towards the end of the gain range, you get a distinct bump in the mid-range.   At the moment I’ve … Read more

FREQUENCY CENTRAL / MATSUMIN: Valvemaster

Valvemaster schematic v1 a8ab7e84c8de

A variant of the Matsumin Velvecaster, the Frequency Central Valvemaster. I really like Valvecasters, so I was looking forward to making this, but it just wasn’t working for me on the breadboard today.   I might try a different valve / test the valve I’m using in a valvecaster circuit just to make sure it … Read more