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With the tube channel strip series, a microphone, line and instrument preamplifier with passive EQ, QES offer for the professional audio recording market reaches the highest levels.  PREQ-1: a Microphone-Line preamplifier with a passive LC Pultec-style EQ.
The two independent inputs and two independent outputs greatly increase the versatility of this piece of equipment, allowing a more flexible use of the two units (Preamp and EQ), which can be operated individually or simultaneously, widening the choice for your demanding applications.

An all valve-based equipment entirely hand-crafted.

The components used are all selected with the strictest tolerance, and tested by ear.

Broadens the base of your works.

PREQ-1 Tube Channel Strip PREQ-1
PREQ-1

Microphone-line-instrument preamplifier
LC passive equalizer
All valve-based audio circuitry
Last generation solid state independently filtered and regulated plate and filament power supplies for minimum noise
Instrument active Hi-Z D.I. input
2-band parametric EQ (EQP-1A style)
Fixed frequency selections for total recall
Transformer balanced audio signal route
Special High Mu Nickel core audio transformers
Linear frequency response over the entire audio range and beyond

Technical data Download the brochure
PREQ-1   brochure download

Frequency response (+0/-1dB) :  
20Hz — 45KHz
C.M.R.R.: ›60dB
Signal/noise ratio, ref. +20dBu, unwtd, 20KHz BW, 10KΩ load: ›80dB
Maximum output level (THD <1%, 10K Rload): +20dBu
Mic input impedance: 1KΩ
Line input impedance: 600Ω
Instr. D.I. input impedance: 5 MΩ
Direct output impedance: 600Ω
Main output impedance: 600Ω
Power supply: 115/230Vac 50/60Hz
Consumption: 81W
Net weight 18.92 lbs