Marantz - EQ340 / 2-Channel 10-Band Stereo graphic equalizer

Vintage MARANTZ EQ340 Graphic Equalizer (Black - Made in Japan)

Spectacular Marantz EQ340 stereo graphic equalizer, manufactured in Japan in the mid-1980s. A highly sought-after unit for its elegant black brushed-aluminum finish with gold lettering (a much rarer version than the classic champagne finish) and its 100% discrete analog design.

Identification and Factory Specifications:
• Model: Marantz Stereo Graphic Equalizer EQ 340
• Serial number: 59N030089
• Manufactured in: Made in Japan / Fabriqué au Japon
• European certification: FTZ code 23/618S and S, N, D, FI certification marks.
• Power supply: Multivoltage (110-120V / 220-240V ~ 50/60Hz), configured for European 220V-240V mains.
Front Condition (Immaculate):
• Very clean black brushed-aluminum panel, with no visible dents or scratches.
• Original lettering is crisp and complete across all scales and buttons.
• Retains all 20 original slider caps, with their orange indicator lines intact.
• Clean, tight 6.35 mm jack connectors on the front (Tape 2 In/Out).
• Selector buttons (Source, Tape 1, Tape 2, Copy 1→2, Equalizer On/Defeat and EQ Rec) have a firm feel, and the red power LED works.

Rear Condition and Connections:
• Metal rear chassis in excellent condition, free of rust, with all original screws and labels intact (including the factory warning sticker on the side).
• Rear RCA connectors (Line In/Out and Tape loops) are clean and secure, with good contact and no noise or intermittent connections when moving the cables.
• Original power cord in good condition.

Technical Specifications:
• 10 bands per channel (independent L/R): 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz and 16 kHz.
• Adjustment range: ±10 dB per band.
• Frequency response: 10 Hz – 30 kHz | Distortion (THD): 0.005% | S/N ratio: 110 dB.
• Dimensions and weight: 416 x 120 x 260 mm | 3.7 kg.

Tested and 100% working on both channels. The sliders move smoothly and equalize precisely without static noise.