Yamaha
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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 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.
Yamaha HTR-5170 425W AV Receiver – Phono, Dolby Digital & DTS
Eighty-five watts into 8 ohms on all five channels, measured across 20 Hz to 20 kHz at 0.04% distortion — rated the honest way rather than at a single frequency. A rear-panel selector takes the mains down to 4 ohms. Dolby Digital, DTS and Cinema DSP, MM phono, three optical and one coaxial digital input, and full 5.1 pre-outs. Same platform as the RX-V795a; 28.7 lbs.
Yamaha RX-V795A 5.1 AV Receiver – 425W Peak, Phono
Eighty-five watts into 8 ohms on each of five channels at 0.04% distortion, with Dolby Digital, DTS and Yamaha’s Cinema DSP modes. An MM phono input, three optical and one coaxial digital input, and a full set of 5.1 pre-outs if you later want outboard amplification. Ships with a new compatible remote, not the original. Level 1 serviced; very good condition.
Yamaha RX-V557 6.1-Channel Receiver – 540 Watt; Pure Direct Mode
Ninety watts into 8 ohms on each of six channels at 0.06% distortion, with Dolby Digital EX and DTS-ES Discrete 6.1. Pure Direct bypasses the tone controls and video circuitry for two-channel listening, and there are 192kHz/24-bit DACs on every channel. Remote included. Very good cosmetic condition, all channels stress-tested.
Yamaha NS-IW470 3-Way 6.5″ In-Wall Speakers — Pair, Black
The midrange and tweeter both swivel, so you can aim them at the seat rather than at the opposite wall — useful in a room that is not symmetrical. A 6.5-inch coated paper woofer, a 2-inch paper midrange with its own level control, and a 1-inch silk dome. 55 Hz to 28 kHz, 6 ohms, wired internally with Monster Cable. Light traces of a previous installation, no damage.
Yamaha RX-V561 5.1 AVR 500W — 2x HDMI, 3 Digital In, Remote
100 watts minimum RMS on every one of the five channels into 8 ohms, and dynamic power that climbs to 110, 130, 160 and 180 watts into 8, 6, 4 and 2 ohms — a receiver that keeps increasing output as the load gets harder has a supply with something in reserve. Where it earns its keep is bass management: a crossover selectable across nine points from 40 Hz to 200 Hz with a 12 dB per octave high-pass on front, centre and surround. Two HDMI inputs, three digital, remote included. Very good condition.
Yamaha YST-SW105 Active Servo Subwoofer — Compact 100W
An 8-inch front-firing paper cone on Yamaha's Advanced Active Servo amplifier — 100 watts into 5 ohms, down to 30 Hz, from a cabinet small enough to tuck beside a bookshelf pair. Continuously variable high-cut from 50 to 150 Hz, a Music/Movie voicing switch, RCA and speaker-level inputs plus full-range pass-through outputs. Very good condition.
Yamaha R-V703 5.1 AVR 280 Watts — Cinema DSP, Phono
Eighty watts to each of the front and centre channels, twenty to the rears, at 0.09% distortion. Yamaha's Digital Sound Field Processor carries six programs — Concert Hall, Rock Concert, Disco, Stadium, Movie and Concert Video — each built from measurements taken in real venues. Dolby Pro Logic, a moving-magnet phono input, a 40-station tuner. Good cosmetic condition; universal remote included.
Yamaha RX-V493 5.1 AVR, 240 Watts, 70 WPC, Phono
Seventy watts a channel into 8 ohms across left, centre and right, 20 watts to the surrounds, and 0.04% distortion at 1 kHz. The reason to want one is the phono stage: moving magnet at 2.5mV with 80dB signal to noise, on a receiver at this price. Cinema DSP adds Cinema, Stadium and Concert Hall fields. A pre-programmed universal remote is included; all five channels tested.
Good Quality, Powerful Yamaha 630 Watt 6.1 AVR HTR-5750
A silver-faced Yamaha 6.1 receiver rated at 630 watts total, with four digital inputs — three optical and one coaxial — a 5.1 analog input, and eight pairs of banana-ready speaker outputs. Impedance switching, S-video upconversion across 60 MHz of video bandwidth, lip-sync delay to 160 ms, and 29 surround programs. Universal remote and PDF manual included.






































