Pultec EQH-2

The EQH-2 is a 2 band passive program EQ that uses a 12AX7/6AQ5 tube gain stage driving a 

Triad HS50 output transformer in class A mode. The 2 Bands have selectable frequencies with continuously variable boost and attenuate functions.

Low frequencies: 20-30-60-100 Hz
Boost: 13.5 dB, attenuate: 17dB
High frequencies: 3-5-8-10-12 KHz tube
Boost: 16 dB, attenuate: 16dB (10kHz shelf only)