Robin Gareus http://gareus.org/
5 Pedalboards using it

TinyGain Mono

Plugin screenshot

Tiny amplifier with output meter, mono version. A gain-stage with the range of +/-20dB and additional mute-control. The gain control is low-pass filtered at 20Hz to prevent zipper noise. The level display shows digital-peak (dBFS) of the output signal (rise-time: immediate, falloff: 15dB/sec).

Control Default Min Max
Gain 0.00 -20.00 20.00
Enable 1 0 1
Mute 0 0 1
Output Level 0.00 0.00 1.00
http://gareus.org/oss/lv2/tinygain#mono v.1:770.0-5