The Model 355 Dual 31-Band 1/3 Octave Graphic Equalizer may be used in a variety of applications such as live sound, recording studios, instrument racks, DJ sound systems and fixed equipment installations. Designed to interface into any audio system, the Model 355 is a powerful tool for solving audio problems and creating interesting sound textures.

The Model 355 possesses a long list of impressive features including: constant Q circuitry, 20mm center detent sliders (with a selectable boost/cut range of 6dB or 12dB), balanced XLR and 1/4” and unbalanced RCA input and output connections, adjustable high pass and low pass filters, variable input level controls, signal clip level indicators, ground lift switch, internal power supply and selectable line voltage switch. The rugged, all-steel constructed chassis occupies 2U rack spaces and is intended for installation into standard 19” equipment racks.

The 355 Dual Channel 31 Band EQ has the features and performance you need for any of your audio applications requiring precise equalization.

MPN: EQ-355

Dimensions: 3.5”H x 19” W x 8.5” D
Weight: 9.0lbs. (4.1kg)
Frequency Bands: 31, 1/3 octave, ISO spacing
Filter Type: Constant Q - 3% center accuracy
Slider Travel: 20mm w/ positive center detent
Range: +/-6dB or +/-12dB selectable
High Pass Filter: 10Hz to 250Hz, 12dB/oct
Low Pass Filter: 3kHz to 40kHz, 12dB/oct
Input Connections: Active balanced XLR and 1/4” TRS {XLR pin 2, 1/4” tip = Hot (+)} Unbalanced RCA
Input Impedance: 20k ohms (bal), 15k ohms (unbal)
Maximum Input Level: +22dBm
Output Connections: Active balanced XLR and 1/4” TRS {XLR pin 2, 1/4” tip = Hot (+)} Unbalanced RCA
Output Impedance: <150 ohms (typ)
Maximum Output Level: +18dBm (bal), +22dBm (unbal)
Frequency Response: 20Hz to 20kHz, +0.5dB
THD + Noise: 0.01%
Signal to Noise Ratio: -94dB
Power: (Switchable) 95-130VAC, 50/60Hz, 22 watts (USA)
190-250VAC, 50Hz (USA)
Warranty: One Year