40-A2 Loudness Meter

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, refer...