4-channels of Benchmark Sound!The Benchmark PRE420 four-channel microphone preamplifier with an integrated stereo mix bus and stereo/mono solo bus in a sleek, 1RU chassis. Even high-end preamplifiers can mask subtle details because of intermodulation distortion, a symptom of RF interference and non-linear performance at ultra-sonic frequencies. The PRE420'scircuitry offers ultra-low distortion over a 500kHz bandwidth while maintaining RF-immunity in the tweakiest environments. The PRE420 is equipped with Benchmark's exclusive CMF1 RF-filter. The CMF1 has been extensively tested and proven in Benchmark's MPS mic-pre series by experienced studio and remote recording engineers in heavy RF fields - such as venues in close proximity to broadcast antennas. This RF-immunity is coupled with ultra-low distortion performance at high-frequencies beyond the reach of most mic-pres, giving your audio remarkable realism. With amazingly low THD+N of 0.00024% (see specs), we welcome you to compare the PRE420's performance specs with any other microphone pre available.
Benchmark's proprietary MirrorPan circuitry minimizes distortion while ensuring constant-power panning with pin-point precision. MirrorPan's innovative mirrored-circuitry, from which the name is derived, eliminates the non-linear distortion caused by potentiometer wiper-current. The result is excellent channel seperation and remarkably accurate imaging. The center-detent position is factory calibrated for accurate center-placement.
An elegant and completely one-of-a-kind feature set compliments the uncompromised sonic integrity of the PRE420. A solo section allows monitoring of any channel or combination of channels (with selectable stereo/mono) via control room XLR outs and the integrated HPA2 - Benchmark's signature high-current, 0-Ohm headphone amp. The PRE420's main mix bus XLR outputs are monitored via a dual, variable intensity signal level meter and peak-warning indicator. Each of the four channels has an independent direct XLR out, a variable intensity signal level meter and peak-warning indicator, and MirrorPan control. Each channel features a precisely matched 41-position first-stage gain control factory preset to a maximium gain of 60dB (internally totally adjustable up to 70dB for special applications).
The useful flexibility of these one-of-a-kind features in no way compromises the pristine audio path. The PRE420's RF-immune, wide-bandwidth circuitry faithfully delivers stunningly high resolution to all direct, stereo, control room, and headphone outs.
Benchmark PRE420 Features:
- Stereo mix bus & isolated stereo/mono solo bus
- RF-immune, wide bandwidth (500kHz)
- Independently selectable +48V phantom power, 40Hz selectable high-pass filter, & -20dB pad.
- MirrorPan - Benchmark's proprietary zero-distortion, constant-power panning technology
- Tweakable peak warning indicator & variable intensity signal level meter on each channel & mix bus
- HPA2 - Benchmark's signature high-current, 0-Ohm headphone amp with useful, selectable mute control room output on headphone insertion.
- 4 direct XLR outs, 2 control room XLR outputs, & 2 stereo XLR outputs
- Ultra-low noise/distortion: (THD+N @ 22dB Gain 10Hz-20kHz = 0.00027%)