The DOD SR231Q is a pro-grade 2U dual 31-band graphic EQ, perfect for fine-tuning live rigs, studio mixes, or taming problematic room frequencies with surgical precision. With constant-Q filters, low-cut options, and balanced TRS I/O, it’s built for engineers who want full-spectrum control without compromise.
Dual-channel graphic EQ with 31 bands per channel (1/3-octave ISO-centred)
±12 dB boost/cut per band, constant-Q filtering
Low-cut filter (12 dB/octave at 50 Hz) per channel
Balanced TRS I/O
LED level meters for precise visual monitoring
High fidelity: low distortion, wide frequency response, high S/N
2U rack-mount steel chassis with internal power supply and power switch
Second-hand, in good condition with some cosmetic wear as shown.
Power supply included.
Equalizer
Standard modular AC IEC power cable
EW57GB-10039
Every preloved product is carefully tested when we buy it and again before it’s shipped to you, so you can shop with confidence. Each item comes with a 3-month electrical warranty and a 6-month structural warranty, excluding accidental damage, misuse or broken strings.
