ORVESTRA · WIKI
DSP - Loudness

Loudness On / Off
Enables bass/treble compensation for quiet listening. App and Line In follow Main volume; output Loudness follows Master and zone volume.
Reference dB
Listening reference level. Correction is zero at or above this level, and grows below it toward the specified boosts.
Low boost dB
Maximum low-frequency boost during quiet listening.
High boost dB
Maximum high-frequency boost during quiet listening.
Attenuate mid
Attenuates the midrange alongside Loudness correction to balance the response.