6386/ES-8 Specifications

Circuit Type:  Remote cutoff gain control tube with balanced class A
solid-state line stage and transformerless output

Input Sensitivity: +4dBu
Input Impedance: 10Kohm (nominal) with 1:1 input transformer
Freq. Response:  -1.0dB 15Hz and 75kHz with 600 ohm output load
Noise:  less than -85dB below +4dBu output level with Output control at unity gain (12:00)
Distortion: less than 0.08% THD+N, 20Hz to 10kHz
Output: +27dBu balanced into 600 ohm load

Max. Gain Reduction:  12dB
Threshold:  up to 12dB of gain reduction at -8dBu input level
Ratio:  1:1 to limiting, program-dependent
Output:  off to +15dB
Modes: fast, preset or manual operation
Fast:  0.5ms attack, 50ms release
Presets: release times are 0.1s, 0.3s, 1s, 2s, 1 to 4s and 0.5 to 20s (program dependent),
Manual: attack time variable from 1-100ms, release time varaible from 0.1s to 2s
Meter: selection of input level, gain reduction, or output level, referenced to +4dBu = 0VU
In/Bypass: hard bypass of input signal to output connector
Link/Split: links channel 1 and channel 2 for stereo operation
Polarity: input and output XLR connectors are pin 2 hot

Vacuum Tubes: 6386: (2) 6386, GE five star , ES-8: (2) ECC189, RCA or equivalent
Power: 120Vac, 30W (240Vac optional)
Power Supplies: +250Vdc, +12.6Vdc and ±18Vdc, fully regulated
with soft-start warm-up and output bypass
Dimensions: 2U enclosure, 19" x 3.5" x 12.5" (48.2 x 8.8 x 31.8 cm)
Weight: 14lbs (6.4kg)

Notes: 0 dBu = 0.775 Vrms.
All noise measurements are unweighted, 20 - 20,000 Hz bandwidth.
All specifications are subject to change without notice.