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Yamaha Q2031 Dual 31-Band Graphic Equalizer – Made in Japan, 2U
Thirty-one bands per channel on ISO third-octave centres, 20Hz to 20kHz, on two fully independent channels — fine enough to pull a single room mode down without touching what sits either side of it. A range switch halves boost and cut to ±6dB for careful work, and the high-pass filters sweep from 20 to 200Hz. Balanced XLR and 1/4-inch throughout, 2U rack. Condition good.
Yamaha R-S300 Stereo Receiver — 50 WPC, MM Phono, Sub Out
A two-channel Yamaha receiver from the R-S series, 50 watts a side, with a proper moving-magnet phono stage, a subwoofer output and switching for two pairs of speakers.
✔️ Condition: Very Good — tested and confirmed working across all inputs and both speaker channels
✔️ Covered by Radique Warranty
✔️ Includes Perpetual Trade-Back Program eligibility
✔️ Expertly packed for safe shipping
Yamaha SW-3 Active Servo Subwoofer — 10″ Woofer | Air Woofer Tec
Yamaha’s Active Servo Technology couples a negative-impedance drive amplifier to a Helmholtz resonator port — the Air Woofer opening — so the amplifier corrects the driver’s motion as it works. 100 watts into a 25 cm cone, rated down to 25 Hz, with a continuously variable 50–150 Hz high-cut at 24 dB per octave. Speaker-level and line inputs both. Very good condition.