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Aphex Channel, master preamp & Input processor. Complete High Performance Channel Strip. Analog outputs, S/PDIF & AES/EBU digital outputs.

With more and more studios foregoing consoles in favor of recording and mixing in the computer, a clean and versatile front end input stage is indispensible. There are dozens and dozens of channel strips and similar devices to choose from, but none that come close to the Channel by way of sound, features or performance.

The legendary Model 230 has been re-imagined, adding a host of new features to address a greater number of workflows while retaining the sound, functionality and versatility that made it one of the most in-demand processors ever for professional audio, live sound, broadcast and post production.

The Channel incorporates seven powerful devices within a compact, single rack space design, including five of Aphex's exclusive patented technologies. Together, the result is the highest possible audio quality, processing power and flexibility available.

The elegant front panel not only looks great, but is laid out in an intuitive, easy-to-use workflow with easy to understand labeling. Building on the foundation of the Model 230, the Channel features an instrument input, dedicated output and gain reduction metering, front panel sample rate and clock source selection, and a reference quality internal clock.


The Aphex Channel is a Tube Microphone Preamp and signal processor that is an indispensable broadcast station tool. You'll find them in the production room and installed as a permanent on-air processing for pumping up voices.

Recording Studios
The Aphex Channel is a powerful and easy-to-use channel strip for commercial and project studios, featuring our reflected-plate amplifier tube microphone preamp design plus compression, gating, de-esser, parametric EQ, Aural Exciter, and Big Bottom bass enhancement. It is an extraordinary single rack unit that offers 7 of Aphex's most popular tools that help you work more easily and naturally, achieving the sonic quality you want without connecting several devices.

Live Sound
When space is at a premium in a touring rig, and night after night reliability is essential, the rugged Aphex Channel provides all the top quality processing needed for any instrument without taking up precious rack space.


Patented Reflected Plate Amplifier (RPA) Tube Preamp
  • Ultra-wide bandwidth, maximum gain and headroom
  • Lower operating temperature than conventional tube designs for longer tube life
  • Each unit is individually tuned at the Aphex factory for unparalleled consistency - any two units are a matched pair

  • EasyRider Class A Compressor
  • Aphex's patented Wave Dependent Compressor - automatically adjusts attack and release times according to program complexity
  • No-Knee compression curve circuitry - automatically adjusts compression ratio based on program levels
  • Includes Aphex's 1001 Class A VCA, used in the Compellor and Dominator

  • Logic Assisted Gate
  • Patented gate technology designed to avoid false triggers, clicks and chattering
  • De-Esser
  • Split band universal de-esser designed to maintain presence while dramatically reducing sibilance on any voice
  • Big Bottom
  • Patented technology for deeper and more resonant bass with little or no increase in peak output
  • Parametric EQ
  • For the ability to precisely fine tune the all-important midrange between the Big Bottom and Aural Exciter.
  • Aural Exciter
  • Patented technology for increased presence and clarity with improved detail and intelligibility
  • Specifications

  • Connector XLR-3F
  • Type Transformerless, NPN active balanced, tube second stage
  • Input Z 2k ohms nominal
  • Maximum Input Level (MIL) +25dBu
  • CMRR >70 dB @ 60 Hz
  • Nominal Preamp Gain 20 to 65 dB
  • Phantom Power +48VDC
  • Pad 20dB
  • EIN -127dBu (Input Shorted)
  • Tube Type 12AT7/ECC81 Dual Triode

  • Connector XLR-3M and 1/4" TRS Phone Jacks
  • Type XLR is Impedance Balanced (may be used unbalanced); TRS is unbalanced
  • Out Z Balanced XLR 66 ohms
  • Out Z Unbalanced XLR 33 ohms; TRS 600 ohms
  • Nominal Level XLR +4dBu; TRS -10dBV
  • Maximum Output Level +25dBu Unloaded; TRS +11dBV

  • Attack / Release Program dependent, user variable release baseline
  • Ratio 4:1
  • Threshold Fixed
  • Knee Medium Hard

  • GATE
  • Attack 0.1 millisecond
  • Hold / Release 300 milliseconds / 400 milliseconds
  • Threshold Variable -50 to +20dB
  • Depth Variable, 1 to 58dB

  • Attack 0.1 millisecond
  • Release 100 milliseconds
  • Threshold Variable -20 to +20dB
  • Ratio 5:1
  • Active Band 4 kHz to 20kHz Linkwitz-Riley 24 db/octave crossover

  • Connector type - Send 1/4" TRS Phone Jack, Balanced
  • Connector type - Return 1/4" TRS Phone Jack, Balanced
  • Nominal Operating Level 0 dBu
  • Point of Insertion Between dynamics processing and equalizers

  • Frequency 50 Hz to 280 Hz
  • Tune Off to +12dB

  • Frequency Tune 240 Hz to 8 kHz
  • Peak / Dip ±12dB
  • Q Range 0.5 to 5

  • Frequency Tune 500 Hz to 5kHz
  • Mix Off to +12dB
  • THD
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