
OptoFET Dual Stage Compressor
Compressor
From Rupert Neve Designs:
From transparent vocal smoothing to extreme envelope shaping with massive harmonic texture, the OptoFET is a highly versatile analog compressor & wave shaper that combines a newly-designed FET compression circuit with an optimized Optical compression circuit into a single rack space.
There are two primary compression modes: in Dual-Stage mode, the FET and OPTO compressors are used in series for complete dynamic control over critical sources, accomplishing a common recording & mixing technique with ease. In Dual-Band mode, each compressor is assigned to either a low or high frequency band that can then be processed independently, which expands the tone-shaping and dynamic control of the OptoFET into uncharted territory.
For many years, the engineering team at RND has experimented with FET compressor designs – but it wasn’t until the OptoFET concept was solidified that releasing our first FET circuit felt ‘right’. While this FET compressor has some familiar characteristics, including ultra-fast attack times and common ratio settings, there are also several features that make it instantly feel like a Rupert Neve Designs product and nothing else.
Specs
- Measurement conditions
- All specifications are typical.
- Input impedance (XLR line in to XLR line out, compressor bypassed)
- 10 kΩ
- Output impedance
- 40 Ω
- Maximum input level @ 1 kHz
- +24 dBu
- Maximum output level @ 1 kHz
- +24 dBu
- Noise (22 Hz - 22 kHz BW)
- -96 dBu
- Frequency response
- 6 Hz to 70 kHz: +/- 0.1 dB; <5 Hz to 183 kHz: -3 dB
- THD+N @ 1 kHz
- 0 dBu: 0.002%; +20 dBu: 0.0006%
- FET compressor
- Noise (22 Hz - 22 kHz BW): -82 dBu; Attack Time: 100μS – 50mS; Release Time: 50mS - 1.5S
- Opto compressor
- Noise (22 Hz - 22 kHz BW): -93 dBu; Attack Time: 5mS – 50mS; Release Time: 50mS - 1.5S
- Dimensions
- 1RU: 19” W x 8.25” D x 1.75” H (48.3 cm W x 21 cm D x 4.5 cm H)
- Weight
- 8 lbs. (3.6 kg)
Source: Rupert Neve Designs OptoFET product page