ALESIS NanoVerb Stereo Amplifier - Manual (Page 35)

EFFECT Knob Settings
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Off
Indicates FX2 is off.
PARAM (Direct-Control Parameter for FX2)
This direct-control parameter works in a similar fashion as the one for FX1.
For Doubling, Ping Pong, Tape Delay, Stereo Delay and Echo,
indicates the length of the delay, up to one second for Tape Delay
and up to half a second for the others.
For all reverbs, higher values indicate a longer decay.
Indicates that the control pedal controls the parameter.
Indicates FX2 is off.
LEVEL
In this position, the display shows you the output level of the current program.
Level
Indicates the program output level in 2dB steps, where 25 is unity
gain (0dB). Unity gain is the point at which the level of the output
is the same as the level of the input.