Very versatile. Has ins/outs for for XLR, 1/4" and RCA.
Tested and sounding good. One rack ear is a little bent and the in/out led doesn't work on the right side. Doesn't affect operation.

Designed to interface into any audio system, the Model 343 is a powerful tool for solving audio problems and creating interesting sound textures.
The Model 343 possesses a long list of impressive features, including: constant Q circuitry, 20mm center detent sliders (with a boost or cut range of 12dB), balanced XLR and 1/4 in., and unbalanced RCA input and output connections.
It also features recording output, LED level metering, variable input level controls, internal power supply, and a selectable line switch.
The rugged, all-steel constructed chassis occupies 1U rack spaces and is intended for installation into standard 19 in. equipment racks.
Applications for the Model 343 include Live Sound Systems/PA, Permanent or Fixed Installations, Church, Club and Practice PA Systems, DJ Sound Systems, Home and Project Recording Systems, and Monitor Systems. The Model 343 Dual Channel 15-Band EQ has the features and performance you need for any of your audio applications requiring precise equalization.
FeaturesConstant Q Circuitry
20mm Center Detent Sliders
Boost/Cut Range: 12 dB
Input Connections: Balanced XLR and 1/4 in. and Unbalanced RCA
Output Connections: Balanced XLR and 1/4 in. and Unbalanced RCA
Level Metering LED
Variable Input Level Control
Selectable Line Switch
Internal Power Supply