Channel One presents a Swiss army knife of tools to help prime any vocal, instrument, digital or analogue audio source for mixing. Each Channel One features a tube/solid-state preamp, DeEsser, compressor limiter, EQ and even a personal headphone monitoring section providing an independent mix for artists.

Three-Fold Input Options

The Channel one preamp section features three individual inputs optimised for a wide range of sources. The balanced microphone input is armed with 48V phantom power for condenser microphones, phase reverse and an on-board subsonic filter, whilst the line input has a precise balancing stage for low-impedance sources. Finally the high-impedance, low-noise instrument input is situated directly on the front panel for ease of access by recording or control room musicians.

Multiple Processing Stages

A wealth of options are made available with Channel One to assist recording engineers and producers in cleaning up a source ready for mixing.

The DeEsser section subtly removes offending sibilants by processing only S-type frequencies. This ensures incorrect information is not removed from the frequency array and vocal tonality remains intact. SPL's DeEsser section features an auto-threshold feature which actively compensates for source volume variation, accommodating the signal for vocalists with perhaps less than perfect technique.

Channel One’s dynamic processing section features a noise gate which operates intelligently without removing reverb tails, and a compressor/limiter based on SPL’s proprietary Double-VCA-Drive® circuitry. The compressor offers amazing noise and distortion characteristics via a truly musical timbre.

Finally the Channel One EQ is optimised for voices, acoustic and electronic instruments. In addition to the low, mid-high and air-band filters, the EQ also features a field-effect distortion stage for subtly distorting signals and adding additional character to sources.

Main Features

  • Fully-featured studio recording channel strip
  • Tube/transistor hybrid preamp technology
  • Built-in reverb friendly noise gate
  • Smart DeEsser with built in auto threshold feature
  • Compressor powered by Double-VCA-Drive
  • 3 band equaliser including field-effect processing


Frequency Response:
10Hz-100kHz (100kHz = -3dB)
Common Mode Rejection:
-80dB @ 1kHz
-97.1dBu @ 20dB (A-weighted)
Input Impedance:
20 kOhm Line; 1 MOhm Inst
Max Input Level:
+22dBu Line; +14dBu Inst
Dynamic Range:
Max Output Level:
Output Impedance:
<50 Ohm
Headphone Gain:
-20dBu @ 25%


Toroidal 20 VA
315 mA (230 V / 50 Hz)
230V / 115V (selectable)

Physical Properties

482 x 88 x 210mm (WxHxD)

Authorised Retail Partners

Funky Junk
KMR Audio
SX Pro
SSP (inc VAT) £ 1,199.00
Code SP-C1
EAN 4260149320285