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input 6.3

  1. DC block/CV mode switch
  2. gain control (from -∞ to +60 dB)
  3. left channel signal level
  4. left channel signal output
  5. 6.3 mm input jack
  6. right channel signal output
  7. right channel signal level
  8. +5 V pull-up (phantom power)

Description

Stereo input preamplifier with wide gain range from -∞ to +60 dB. Features a +5V pull-up switch for powering electret microphones and expression pedals, and a CV/DC block mode switch for handling both audio and control voltage signals.

Each channel has 3 output pins and a signal level indicator.

  • CV mode on: no DC blocking, passes DC offset (for CV sources)
  • CV mode off: DC blocking enabled (for audio signals)

Signal type reference

Signal type +5V CV mode Gain
Line input off off low
Dynamic/piezo mic off off high
Electret mic on off high
CV source off on as needed
Sustain/expression pedal on on low

Note: Condenser microphones requiring 48V phantom power are not supported.

Power consumption

348 mW