Nikko EQ-II 6-Band Stereo Graphic Equalizer Made in Japan

Nikko EQ-II 6-Band Stereo Graphic Equalizer Made in Japan

A clean, well-built six-band stereo graphic equalizer from Nikko Electric of Tokyo, the EQ-II offers precise, musical frequency control with excellent specifications in a striking black finish — in excellent condition.

The Nikko EQ-II is a straightforward, high-quality graphic equalizer manufactured in Japan from the late 1970s through the early 1980s, and it remains a practical and sonically capable tool for fine-tuning your listening room acoustics. Each channel provides six slider controls at 40 Hz, 125 Hz, 400 Hz, 1.25 kHz, 4 kHz, and 12.5 kHz — covering the full audible range at one-octave-plus intervals with up to ±12 dB of boost or cut per band, enough flexibility to tame a bright room, compensate for speaker placement, or simply tailor the sound to personal taste. The specifications are genuinely impressive for a budget-era component: 0.01% THD, a 100 dB signal-to-noise ratio, and a frequency response extending from 10 Hz to 30 kHz, ensuring the EQ adds no meaningful colour or noise of its own. A bypass switch allows instant A/B comparison between the EQ’d and unprocessed signal, and a tape monitor switch provides added flexibility for system integration.

Key Specifications:

Type: Stereo graphic equalizer

Bands: 6 bands per channel at 40, 125, 400, 1,250, 4,000, 12,500 Hz

Control range: ±12 dB per band

Frequency response: 10 Hz – 30,000 Hz

Total harmonic distortion: 0.01%

Signal-to-noise ratio: >100 dB

Input impedance: 80 kΩ

Features: Bypass switch, tape monitor switch

Years of manufacture: 1977–1981

Country of manufacture: Japan

Finish: Black

Condition: Excellent cosmetic condition, fully tested and working

Dimensions: (Width x Height x Depth) 420 x 92 x 330 mm (16.5 x 3.6 x 13.0 inches)

Weight: 4.9 kg (10.8 lbs)

Made in Japan, this Nikko EQ-II is a clean, practical, and genuinely well-specified six-band graphic equalizer in excellent condition — an excellent and affordable tool for anyone looking to optimize their listening room acoustics or fine-tune their system’s frequency balance with a handsome black-faced component.

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence; asking $175.