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RUPERT NEVE DESIGNS

OptoFET

Dual Compressors

Dual-stage compression, optical and FET circuits, variable attack and release, crossover control, GRIT and BLOOM modes, wet/dry blend, transformer output.

$2,799.00 CAD
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Description

The Rupert Neve Designs OptoFET Dual Stage Compressor is a versatile analog dynamics processor that combines two independent compression circuits within a single rack unit. With both an optical compressor and a FET compressor onboard, users can apply them in series for layered control or split them across frequency bands to shape specific tonal ranges. This allows for both subtle and aggressive compression techniques, depending on the needs of the source material.

Each section of the OptoFET includes controls for attack, release, threshold, blend, and makeup gain, giving engineers a wide range of dynamic control. Additional features include side-chain high-pass filters, a variable crossover for frequency-based processing, and unique harmonic shaping modes: GRIT emphasizes the upper mids and highs, while BLOOM brings out character in the low-mids. With the ability to reorder the signal path and finely tune the interaction between the two stages, this unit is well suited for tracking, mixing, mastering, and sound design.

Features

Dual Compression Circuits
Combines FET and Optical compression in one unit for versatile dynamic control.

Two Operating Modes
Use both compressors in series (Dual Stage) or split across frequency bands (Dual Band) for flexible tone shaping.

Creative Harmonic Controls
‘GRIT’ enhances upper mids and highs, while ‘BLOOM’ enriches low mids and lows with harmonic content.

Independent Compressor Settings
Each compressor has its own attack, release, threshold, gain, blend, and ratio controls.

Parallel Compression Blending
Blend compressed and uncompressed signals for subtle or aggressive results.

Flip Compression Order
Switch the signal path order between FET and Optical stages with a single button.

Variable Crossover Control
Target specific frequency ranges when using Dual Band mode for precise tonal shaping.

Side-Chain High-Pass Filters
Prevent low frequencies from triggering compression for more natural dynamics.

Transformer-Coupled Output
Delivers classic analog warmth and punch to the final signal.

Stereo Pairing Capability
Match settings across two units using 31-detent knobs for stereo stems or full mixes.

Compact 1U Rack Design
Fits easily into any studio or live rack setup.

Ideal for All Production Stages
Designed for tracking, mixing, mastering, and sound design.

Specifications

General Specifications
Device Type: Dual-Stage or Dual-Band Analog Compressor
Channels: Single Channel (Mono)
Compression Types: FET and Optical
Enclosure: 1U 19” Rackmount
Construction: Transformer-balanced output, electronically balanced input
Control Type: 31-detent potentiometers, illuminated push-buttons, 8-segment LED meters
Power Supply: 100–240 VAC, 50/60 Hz
Power Consumption: 35 Watts Max
Dimensions: 19" (W) x 8.125" (D) x 1.75" (H)
Shipping Dimensions: 24" x 13" x 4"
Shipping Weight: 9 lbs (4.1 kg)

Connectivity
Input: Balanced XLR / ¼" TRS combo jack (electronically balanced)
Output: Balanced XLR (transformer coupled)
Ground Lift: Rear panel switch lifting XLR Pin 1 from chassis ground

FET Compressor
Threshold Range: +20 dBu to –15 dBu
Attack Time: 100 µs – 50 ms
Release Time: 50 ms – 1.5 s
Makeup Gain: 0 dB to +20 dB
Compression Ratios: 4:1, 8:1 (selectable)
Side-Chain HPF: 125 Hz, 12 dB/oct
Harmonics Mode: GRIT (increased high-mid/high frequency content, faster envelope response)
Blend Control: 0–100% Wet/Dry Mix
Noise: –82 dBu (22 Hz–22 kHz BW)

Optical Compressor
Threshold Range: +20 dBu to –10 dBu
Attack Time: 5 ms – 50 ms
Release Time: 50 ms – 1.5 s
Makeup Gain: 0 dB to +20 dB
Compression Ratios: 2:1, 5:1 (selectable)
Side-Chain HPF: 125 Hz, 12 dB/oct
Harmonics Mode: BLOOM (increased low-mid/low frequency content, faster envelope response)
Blend Control: 0–100% Wet/Dry Mix
Noise: –93 dBu (22 Hz–22 kHz BW)

Input/Output (Bypassed Mode)
Input Impedance: 10 kΩ
Output Impedance: 40 Ω
Source Impedance (ZSOURCE): 40 Ω
Max Input Level (1 kHz): +24 dBu
Max Output Level (1 kHz): +24 dBu
Frequency Response: 6 Hz – 70 kHz ±0.1 dB, –3 dB at <5 Hz and 183 kHz
THD+N @ 1 kHz (0 dBu): 0.002%
THD+N @ 1 kHz (+20 dBu): 0.0006%
Noise: –96 dBu (22 Hz–22 kHz BW)

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