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Nikko Graphic Equalizer I – Rare High-End Graphic Equalizer in Professional Rack Format
The Nikko Graphic Equalizer I is one of the rarest and most sophisticated signal processors ever produced by the renowned Japanese audio manufacturer Nikko. Designed during the golden age of high-fidelity audio, the EQ-I combines exceptional build quality, impressive technical performance and a professional 19-inch rack-mount design.
The example offered here is in very good cosmetic and technical condition.
Unlike many later graphic equalizers, the Nikko EQ-I was designed as a serious audiophile component rather than a visual effects device. Each channel features ten carefully selected frequency bands, allowing precise adjustment of room acoustics and loudspeaker response.
Its technical specifications remain impressive even today. A frequency response extending from 10 Hz to 50 kHz, an exceptionally low distortion figure of just 0.006%, and a signal-to-noise ratio of 105 dB demonstrate the engineering effort invested in this model.
The high-quality detented slider controls feature a precise centre position for accurate and repeatable adjustments. Additional functions including tape monitor, gain adjustment and pre/post equalization switching further highlight the professional nature of this component.
Today, the Graphic Equalizer I is a rare and highly desirable companion for classic Nikko systems and a fascinating collector's piece from the golden era of Japanese hi-fi engineering.
Technical Highlights
- 10 bands per channel
- Frequency range from 31.5 Hz to 16 kHz
- ±12 dB adjustment range per band
- Frequency response: 10 Hz – 50 kHz
- Total harmonic distortion: 0.006%
- Signal-to-noise ratio: 105 dB
- Precision detented slider controls
- Tape monitor function
- Gain and pre/post equalizer switching
- Professional 19-inch rack format
Condition
- Fully functional
- Very good cosmetic condition
- Thoroughly tested
- Ready for immediate use
Our Verdict
A remarkably rare and exceptionally well-built graphic equalizer from the golden age of Japanese audio engineering. The Nikko Graphic Equalizer I combines audiophile performance, professional functionality and true collector appeal.
The A1 arrived safely with me. The device was really well packaged by you and is visually in perfect condition for its age! In the meantime I have carried out some listening tests (with my rather modest components: Nuber nuWave floorstanding speakers, Dual 704 with Vinylmaster Silver and Technics Sl 1500 with Goldring IGC 910). In comparison, my Yamaha A-960, which has also been overhauled, can't keep up. The A1 reproduces the sounds extremely cleanly and precisely with great depth and pleasant dynamics, really great sound! More quality than I expected.
Yamaha CX-800 preamplifier
Hello Marc, the delivery arrived safely, I am very satisfied, thank you very much, I will definitely come back and would like to choose and buy something from you.
Got a Braun CC4 delivered today! Very good packaging !!! Top device and fair price. I bought a Braun PA4/2 about a year ago and I'm still very happy with it. I can only recommend this tube to anyone looking for a good nostalgic device !!!
The parcel arrived safely today. The packaging itself was simply second to none and the turntable is in excellent condition as described. I set it up quickly, the cartridge alignment was perfect, everything seems to work flawlessly. In short, I'm really impressed so far! I hope to play some more records this weekend and report back. Thank you very much! Best regards, Marek
PS: Thanks also for the instructions and the gift!
Hello. The nad tuner arrived today, big praise for the fast delivery, excellent packaging, really professional!!!! The tuner is really in top condition. Excellently received, great! Thank you very much. Greetings from Zagreb!