: Features a low wow and flutter of 0.04% WRMS and a signal-to-noise ratio of up to 73dB with Dolby C engaged. Notable Features
This classic repair is a rite of passage for many owners. As one experienced restorer humorously advised on a forum:
Dolby noise reduction was a game-changer for cassette tapes, and the CS-F21 was equipped with both systems. While Dolby B reduces tape hiss by about 10 dB, the inclusion of Dolby C on this model was a significant upgrade. It provides a full 20 dB of noise reduction above about 1,000 Hz , effectively doubling the performance of B-type for an exceptionally quiet noise floor during playback of high-quality tapes.
a solid, mid-range vintage cassette deck notable for its distinctive "spacey" 1980s aesthetic and reliable mechanical build akai cs-f21
Before you even press play, the CS-F21 delivers on nostalgia. It features the quintessential late-70s "silver face" design:
The underlying engineering of the CS-F21 highlights Akai's commitment to precision engineering during the early 1980s: Specification 4-track, 2-channel stereo Heads 1 x High-Density Metallic (Rec/Playback), 1 x Erase Motor Type Electronically speed-controlled DC motor Tape Speed 4.76 cm/s (1-7/8 ips) Wow & Flutter Less than 0.04% WRMS Total Harmonic Distortion (THD) Less than 0.8% Signal-to-Noise Ratio 56 dB (Normal), 58 dB (Chrome/Metal), up to 73 dB (Dolby C) Frequency Response
While Akai's internal boards are highly resilient, the electrolytic capacitors can dry out over 40 years, leading to audible hum or channel imbalance. : Features a low wow and flutter of 0
Despite being a 2-head machine, the was well-equipped to compete with more expensive decks of its time. Tape Handling and Heads
One channel is silent or very quiet. Cause: The internal muting transistors (2SC458 or similar) have shorted. These are notorious for "black leg disease" (copper oxide corrosion). Fix: Replace the muting transistors with modern equivalents (KSC1845). Also, clean the record/playback switch (a long slider inside the unit) with DeoxIT F5.
The Akai CS-F21 is a vintage 2-head stereo cassette deck produced in Japan from 1982 to 1984, featuring a silver, early-80s design and full-logic transport controls. It offers 30–18,000 Hz frequency response, Dolby B and C noise reduction, and 12-segment FLD meters, generally selling for $120–$250 in refurbished condition. For more detailed technical specifications, visit HiFi-Wiki . While Dolby B reduces tape hiss by about
The is a vintage hifi entry-midrange stereo cassette tape deck manufactured in Japan by Akai Electric Co. between 1982 and 1983 . It arrived during the golden era of analog audio, bridging the gap between mechanical "piano-key" decks and the microprocessor-controlled components of the mid-1980s. Built with a distinctive sharp, brushed-silver aluminum finish, the CS-F21 represents Akai's dedication to reliable engineering, solid tape transport mechanics, and functional visual design.
: Offers front-facing microphone inputs for live recording and a dedicated headphone jack with an adjustable output level control. Maintenance and Legacy AKAI CS-F21 Stereo Cassette Deck - VINTAGE CORNER
30 Hz – 15,000 Hz (Normal), 30 Hz – 16,000 Hz (CrO2), 30 Hz – 18,000 Hz (Metal) 440 x 103 x 273 mm Weight 4.1 kg (approx. 9 lbs) Key Features and Functionality Advanced Noise Reduction
The electronically speed-controlled DC motor keeps wow and flutter very low, at less than 0.04% WRMS, ensuring stable pitch.
The is a vintage 2-head, single compact cassette deck manufactured in Japan between 1982 and 1983 . Released during the golden era of analog high-fidelity audio, it served as a highly competent mid-range component designed to deliver premium performance without the premium price tag. Known for its robust build quality, clean layout, and inclusion of advanced noise reduction systems like Dolby C, the