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Product 181825

Aphex 230 Master Voice Channel Tube Mic Pre   

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The Aphex 230 Master Voice Channel Tube Mic Pre is an indispensable broadcast station tool. Youll find them in the production room, or installed as ...Read More

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Makes voices sound bigger than life!

The Aphex 230 Master Voice Channel Tube Mic Pre is an indispensable broadcast station tool. Youll find them in the production room, or installed as a permanent on-air feed-through for pumping up voices. The Aphex 230 also makes a powerful and easy-to-use channel for home and project studios with its reflected-plate amplifier tube mic preamp design plus compression, gating, de-esser, parametric EQ, aural exciter, and a bottom booster.

  • Reflected-plate amplifier tube mic preamp
  • EasyRider compressor
  • Logic assisted gate
  • Split-band de-esser
  • Aural exciter
  • Parametric EQ
  • Big bottom
  • +4 dBu and -10 dBV outputs
  • 24-bit 96 kHz A/D
  • AES, SPDIF and optical outputs
  • Low jitter word clock output
  • Word clock input

230 Master Voice Channel Tube Mic Pre

    Connector XLR-3F
    Type Transformerless, NPN active balanced, tube second stage
    Input Z 2k ohms nominal
    Maximum Input Level (MIL) 20k ohms
    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)

Review Snapshot

by PowerReviews

(based on 3 reviews)

Ratings Distribution

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  • 1 Stars



Reviewed by 3 customers

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Worth the price

By Chris Mann

from Dunlap TN

Ask me a question

I like that you can turn on and off sections. If you only need some compression it workds creat for that. If you want to make your voice sound nice and full and dial in some upper freq clarity it's there easily. De-essing- simple. Big bottom and treble enhancement- thats where you can really make yourself sound like a pro. Don't over do it though unless you need to sound like a radio DJ- it can do that too. Pair it up with the right mic for the job and you're golden. You'll make everybody else look like amateurs and it's all in a little single rack unit.
This thing is awesome. However you use it- live music, public speaking, recording, voice over, whatever- if you plug your mic (condensor or dynamic) into it and do some quick knob turning you will sound golden. It makes a regular SM58 sound like a studio condensor on stage.
You can turn sections on and off if needed and go from subtle to booming DJ voice and everything in between. It's build sturdy and I imagine it will last a long time. It's a bit expensive, but compared to what? There's nothing to compare it too. If you bought all the parts (compressor, eq, bass/treble enhancement etc) individually you would spend more unless you got Behringer junk.
I can't imagine not having one now.
Seems well built. Sturdy. No complaints.
Sounds fantastic.

(0 of 4 customers found this review helpful)


Not all that great, ridiculous at this price.

By Nick Edwards

from Florida

Well, there are a lot of features . . . I got this to use for broadcast/voice over only. This thing was supposed to be the end-all be-all for that application. I fiddled with it for a couple of days and sent it back. Big Bottom and Aural Eciter were cool features, but they did the exact same thing my BBE sonic maximizer does for less. As a preamp, it is nothing great, but not horrible. All in all, I got a much better sound out of tube channel strip and the BBE maximizer, for much less cash. The compressor is for people who don't know how to use a compressor, it is just one dial. If you need a gate and de-esser for a vocal live app, you need to find a new environment or new talent. If you are recording, you should be using a plug-in for those two things.
Seemed sturdy, didn't have it long enough to make a call.
This is something for people who don't know how to work a rack. You would think it would be idiot proof as simple as everything is, but I couldn't get a real nice sound out of it and I messed with it for days. That may be my fault though, maybe simple things confuse me.


Aphex 230 simply awesome

By Bluegrass Rulez

from Wayne, WV

I purchased the Aphex 230 and this has to be the best all-in-one solution for voice work I've encountered. I use an Electro-voice RE-27 dynamic microphone and this unit really makes the voices behind the mic shine. With its easy to adjust compression, noise gate and de-esser, as well as the effects section (big bottom, parametric equalizer, and Aureal Exciter) this unit far surpasses anything I've had in the rack. If you're in the market for a unit of this type, be sure and look seriously at the Aphex 230 before you purchase, you'll be glad you did.

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