Balanced input: High efficiency electronic balanced circuit is adopted in order to reduce external hum pick up from signal line. Input mode switch: This model is able to distribute the sound signal input to output at 1:10 or 2:5 by mono and stereo selector switch. Level control and peak LED per channel: Capable of adjusting each output volume and in case of excessive input LED lamp warns distortion status. Balanced output and minimize the DC hum: Sound output is possible whether or of the output unit polarity is grounded and the direct current noise is minimized a 15V power source motivates the operation of circuit. Use of emergency battery (SAD-152 ONLY): You can operate this model by using emergency battery for unexpected AC power failure. (Built in DC 24V terminal)

RTA15/RTA31 with Line in, Mic. in, white & pink noise generator, 15/31 band EQ with real time analyzer, high-pass/low-apss filter, delay, volume control and bypass functions. It provides precise audio signal control to tixed sound installation, live performance and studio applications.