Fischer Amps

Rupert Neve Designs Portico 543, Compressor (500 Series), Preamplification: stepless from 6 dB to +20 dB, Threshold range: stepless from 36 dB to + 22 dB, Ratio range: stepless from 1.1: 1 to limit (40: 1), Attack range: stepless from 20 mS to 75 ms, Release range: infinitely variable from 100 ms to 2.5 seconds, FF / FB: Feed-Forward or Feed-Back VCA control, Maximum output level: balanced and floating transformer output, Max. Output from 20 Hz to 40 kHz is +23 dBu, Total Harmonic Distortion and Noise: @ 1 kHz, +20 dBu output level, No load, Main Output, compressor bypassed: better than 0.0006%, Main Output, compressor activated: better than 0.02%, Noise: measured at the main output, Unweighted, 22 Hz-22 kHz, Terminated 40 Ohms, Frequency range: Main output, Unity Gain @ 18 Hz, +/- 3 dB. @ 150 kHz 3 dB, Crosstalk measured channel to channel: 90 dB @ 15 kHz, Monitor INPUT LEVEL and GAIN REDUCTION, Construction: API Series 500 rack format