Dorrough 40A2

Dorrough Loudness Meter model 40-A2 displays both the peak and average of the audio signal. The unique metering ballistics accurately present loudness variations on an easy-to-read scale. Dual inputs allow sum and difference metering. Peak Hold functions are standard along with a DB9 connector to access various over and under parameters.

The 40A2's "A" scale allows 14 dB of headroom in 1 dB steps from +14 to -25.

Other models available: model #40B2 is calibrated in percent modulation, referenced at 100%, and has a lower scale in dB from -36 to +3 dB; #40C2 features 20 dB headroom in 1 dB steps, scale identical to the AES/EBU digital standard.

Dual rackmount available for mounting two units across (model #40D)