The AD2055 combines 100% discrete, pure class A signal amplifiers with state-of- the-art passive and active filter topologies. The AD2055’s unique circuitry delivers very high resolution transient detail at the operational extremes of real world equalization demands. The AD2055 auto-bias DC servo loop control eliminates the need for all interstage capacitor coupling. The AD2055 breathes life into all musical performances!
Dual Mono-Stereo, All-discrete Class A Parametric Equalizer
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Professional 4-Band Equalizer in Half Rack Layout (No Transformer)
The TUBE-TECH EM 1A Passive Tube EQ is an exact replica of our oldest "classic", the PE 1C all-tube, passive Program Equalizer, which itself is based on the classic PULTEC EQP 1A.
This is the tube version of the Vitalizer. It does it’s magic with the addition of 12AX7s in the Hi-Mid and stereo expander sections of the unit.
The TUBE-TECH EQ 1AM is a full range one channel unit, featuring low and high cut, low and high shelving as well as three overlapping bands of equalization.
The PE 1C is a passive, all-tube EQ, based on the classic PULTEC EQP 1A design and featuring a passive EQ section and a high quality op amp.