Radial Engineering PreComp Channel Strip

Radial Engineering PreComp Channel Strip

Radial Engineering PreComp Channel Strip

B&H # RAPRECOMP MFR # R700 0114
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Expected availability: 7-14 business days

Product Highlights

  • Combination Preamp & Compressor
  • Accustate Gain Control for Low Noise
  • Full Function Compressor
  • Separately Accessible Processor

This item is noncancelable and nonreturnable.

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Radial Engineering R700 0114 overview

  • 1Description

The Radial Engineering PreComp Channel Strip is a combination microphone preamplifier and compressor made for the popular 500 series rack format that is designed to offer greater efficiency to the recording process by simplifying the signal path and gain stage management.

The single wide module begins with a high performance preamp that can deliver in excess of 60 dB to handle all types of microphones. Equipped with Accustate gain control, the PreComp simultaneously sets the output and sensitivity to maximize signal-to-noise at all levels. This is particularly important while recording in the digital domain where background noise can often be audible during quiet passages.

A full-feature VCA compressor follows with adjustable threshold, compression ratio, and gain make-up controls. The advanced compression algorithm reads the program material and automatically transitions from soft-knee to hard-knee as the signal rises above the threshold. A simple slow-fast switch makes it easy to set the PreComp for either vocals or percussion.

Once connected to a 500 series power rack, connections to and from the PreComp are automatically routed to the XLRs for balanced operation. When used with a Workhorse, connectivity increases with 1/4" TRS connectors and D-Subs, while the Omniport provides direct patching to the preamp or the compressor, thereby enabling the engineer to use each processor separately.

Other features include 180° polarity reverse for phase matching 2 microphones, a high pass filter to eliminate unwanted resonance, 48V phantom power for condenser microphones and an IN/OUT switch that lets you quickly compare the original uncompressed signal with the processed result. This makes the PreComp well-suited for recording, broadcast, and post production suites where instant control over voice and instrument is desired. The PreComp is also a favorite for multi-channel live recording engineers where the small footprint can accommodate many input channels in a higher density rack.


It is used to set the mic level. The accustate level control sets the input sensitivity and gain at the same time.
Reverses the polarity to help phase-align 2 microphones or reduce feedback in a live situation.
Stage meter lets you know when signal is active near threshold and compression is being applied.
High Pass Filter
Cuts bass frequencies to reduce resonance which can muddy up a recording.
Threshold Control
Variable threshold control is used to set the point when compression will take effect.
Sets the compression from 1:1 (off) to 10:1 where a 10 dB input produces 1 dB at the output.
It is used to set the speed at which the compressor will take effect. Set to slow, the initial transient such as snap from a snare will pass without compression.
It turns the compressor on or off and is used to compare the dry signal with the compressed results.
Activates phantom power for condenser mics and active direct boxes. It is recessed to prevent accidental turn-on.
Solid State Electronics
Combines an application-specific integrated circuit (not a general use op-amp) with ultra-condensed surface-mount technology to pack in the required electronics to fit the compact 500 series format.
Gold Plated 15-Pin Card Edge
Double sided to ensure positive connection to the receptacle for improved mating.
Dual Potentiometers
Double up the solder points for greater durability. Steel casing with steel shaft and retention nut will not bend when under stress.
Double Layer Front Panel
Steel construction adds rigidity to reduce stress on the PC board.
Radial Push Switches
The radial switches feature extra durable metal outer casing. They are rated at over 20,000 cycles for added durability.
Mil-Spec Circuit Board
Features double sided PCB and full ground plane to assure lowest possible noise and durability for years of trouble-free performance.
PreComp for Voice-Over in Post Production
The PreComp is suitable for recording a voice-over in post production or tracking a vocal while recording. Plug your microphone in, set the microphone level, then add a touch of compression to level the signal, and keep it out of the red. The PreComp is quick and easy to use.
Using the PreComp in a Broadcast Studio
The PreComp is a suitable front-end for on-air broadcast. Set the level and add the appropriate amount of compression to ensure that the voice is maximized. For greater tonal control, add the Q4 parametric EQ into the signal chain using the Omniport 1/4" TRS insert.
Using the PreComp for Live Recording
Use the PreComp to capture the signals from the microphones and keep the dynamics under control to prevent distortion. Split the signal by using the 1/4" TRS output on the Workhorse to feed the recorder and the XLR out to feed the PA system.
UPC: 676101040544
In the Box
Radial Engineering PreComp Channel Strip
  • Limited 3-Year Warranty on Parts & Labor
  • Table of Contents
    • 1Description

    Radial Engineering R700 0114 specs

    Circuit Type Preamp: Accustate input with true variable gain front end
    Compressor: Feed forward VCA compressor with true RMS sidechain
    Frequency Response 20 Hz to 20 kHz (-1.5 dB at 20 Hz)
    Total Harmonic Distortion <0.003%
    Dynamic Range 112 dB
    Input Impedance 3.3 kΩ
    Maximum Input 24 dBu
    Maximum Gain 55 dB
    Make-up Gain Up to +25 dB
    Output Impedance 300 Ω
    Equivalent Input Noise -120 dBu
    Noise Floor -85 dB at 40 dB of gain
    Distortion Inter-modulation: 0.03%
    Control Preamp: Gain, 180°, HPF, 48 V phantom
    Compressor Controls: Threshold, Ratio, Gain, Speed, On
    Meter LED: Below, at, and above threshold
    Function Omniport:
    Tip: Preamp Output
    Ring: Compressor input
    Power Requirement 56 mA
    Format 500 series module
    Size Standard 500 series rack format
    Weight 1.5 lb (0.7 kg)
    Packaging Info
    Package Weight 1.65 lb
    Box Dimensions (LxWxH) 8.9 x 6.7 x 2.0"

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