230 Master Voice Channel

Complete High Intelligibility Voice Processing Solution

The Model 230 is a comprehensive analog voice processing channel with built-in digital outputs.Combining several of our patented technologies, the Model 230 is the ultimate processing tool for on-air broadcast, voiceovers and singers to achieve a vocal quality that™s present, open and controlled.With an intuitive set of controls, each component can be easily adjusted to meet the needs of any voice or vocal style.For integration into nearly any environment, the Model 230 includes a balanced analog output on XLR, an unbalanced ¼ output along with AES/EBU, S/PDIF and optical digital outputs up to 96 kHz sample rates.

Compression is handled with Aphex™ Easyrider compressor, offering high quality dynamics processing without pumping or breathing. The logic-assisted gate provides positive triggering with no false triggers. The split-band de-esser controls sibilance without dulling adjacent high frequencies. The parametric EQ is optimized for human voice frequencies between 240 Hz and 4.5 kHz with a Q control from .5 to 5 octaves to quickly isolate and eliminate any problem frequencies. The patented Aural Exciter® provides its trademark ability to increase intelligibility, presence and detail while the Big Bottom provides body and fullness without increasing peaks.

The Model 230 also offers a post – compressor send and return for inserting additional processing into the chain.For on-air applications, the Model 230 includes a mute function that responds to momentary switch connected to its cough switch input.

Whether you're doing broadcasting, ADR, music recording, live sound reinforcement or any other application that requires vocal excellence, the Aphex Model 230 is a powerful and superb-sounding processor.

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


  • 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
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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
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 <.01% @ +4dBu Out
IMD <.01% @ +4dBu Out
Freq Response (Flat) 18 Hz to 24kHz ±1dB
Internal Sample Rates 44.1KHz, 48KHz, 88.2KHz, 96KHz
External Sample Rates Automatically syncs to any word clock between 32KHz and 96KHz
Resolution 24 bits
Word Clock Input BNC Jack, High Z, Captures <1Vp-p to 5Vp-p
Word Clock Output BNC Jack, 75 Ohms, 5Vp-p
Dynamic Range Digital dynamic range greater than analog front end
Noise Dither Dithered by analog preamp noise floor. Equivalent to 16-bit digital audio dither.
Level Equivalency -20dBFS Digital = +4dBu Analog
Power requirements 90-250 VAC 50-60 Hz 12W
Dimensions 19″W x 1.75″H x 8.25″ D 1 Rack U (482.6mm x 44.5mm x 209.6mm)
Depth Behind Front Panel 7.5″ (190.5mm)
Net Weight 6 lbs (2.73 kg)
Shipping Weight 9 lbs (4.1 kg)

All specifications are subject to change without notice.

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