Thank you for viewing. Maxon31 band EQ, set of 2 Previously listed as "operation unconfirmed," but I have now confirmed their operation due to the likes received. I powered them on with a general-purpose adapter I have and confirmed that the equalizer sound can be adjusted. I have also revised the price from 9,480 yen to 9,000 yen. However, as I haven't used them for a long time, there is some slight crackling. Since there are two units, how about using them for the L/R channels of your audio setup? Contents: 2 equalizers and connecting wires. ⚠️ Power adapter is not included. Specifications: DC9V 70mA, center negative *Testing was done with φ5.5-φ2.1 Issues: ・3 equalizer knobs are missing ・The dust-proof urethane? on the equalizer slide knob section has deteriorated Please consider the above before purchasing.