Pultec Eqp-1a Schematic Online

All filters are with variable inductors (actually tapped transformers in the original) and variable capacitors.

Looking at the left side of the standard EQP-1A schematic, we find the input section. The signal enters through a high-quality input transformer (originally a Peerless or UTC). This transformer serves two purposes: it balances the input and provides the necessary impedance matching for the first tube stage. pultec eqp-1a schematic

Build it on a breadboard. Listen to the low-end bloom. Hear the high-end silk. All filters are with variable inductors (actually tapped

If you build a Pultec EQP-1A from a schematic, you will fail if you ignore impedance. pultec eqp-1a schematic

The fundamental genius of the EQP-1A schematic is its "no-loss" passive design.