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Levels & Metering

ASP800 runs internally on ±15 V DC rails and can deliver up to +22 dBu from the rear analogue outputs. Its internal ADC has 116 dB A-weighted dynamic range and a selectable line-up reference of +18 dBu or +12 dBu = 0 dBFS.

Set recording gain​

  1. Connect and select the required microphone, line or instrument source.
  2. Enable phantom power only if the connected microphone requires it.
  3. While the performer produces the loudest expected passages, adjust the channel gain while watching the destination interface, recorder or DAW meter.
  4. Aim for peaks around −10 dBFS in the DAW. This preserves useful headroom.
  5. If a microphone signal is too hot, engage the channel’s −15 dB pad and set the gain again.

The ASP800 LEDs provide a quick indication:

  • SIG: signal present at −38 dBFS
  • PK: potential overload at −2 dBFS

Use the recording destination for accurate metering. Ideally, set the level so the ASP800 peak LED does not illuminate.