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Dual C 830

Stereo Cassette Deck (1979-81)

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Dual C 830


With its three heads and true source/tape monitoring ability, the C 830 will have special appeal to the most serious recording enthusiast. The incoming signal can be instantly compared with the signal actually recorded on the tape.

The Direct Load and Lock system begins the entire recording and playback process by assuring perfect cassette alignment. The four-point tape guidance system assures perfect contact between the tape and heads.

Recordings from discs, broadcasts and other tape recorders can be mixed with the microphone inputs - line and microphone each having its own record-level controls. Headphone monitoring is made more convenient by an independent level control for this output.

The drive system has an extra touch of precision - a phase-locked-loop in the servo control system which reduces wow and flutter to only 0.035 percent. An integral frequency generator provides instantaneous corrections of any deviation from accurate speed. Perfect tape to head alignment is assured by the four-point guidance system. And the electronic sensor constantly monitors the tape tension so that any deviation instantaneously stops the transport.

As you've probably learned from experience, no matter how careful you are when making recordings, especially off-the-air, there are occasional unexpected interruptions and abrupt endings. Since cassettes are not easily edited, you invariably have to live with those unwanted sounds or try to erase the tape at just the right points - assuming you can locate them.

Dual's electronic fade/edit system lets you fade out unwanted materials during playback - while you're listening to the tape. Guesswork and accidental erasure are avoided. And you'll have the satisfaction of knowing that the beginnings and endings of all your tapes are unmarred.

The 830's many other operating features include: six-way bias/equalization; equalized peak-reading LED record-level indicators; two-way memory stop; switch-able multiplex filter; and Dolby noise reduction. In short, just about everything the demanding professional is likely to look for in an advanced design cassette deck.


Type: 3-head, single compact cassette deck

Track System: 4-track, 2-channel stereo

Tape Speed: 4.75 cm/s

Heads: 1 x playback, 1 x recording, 1 x erase

Motor: PLL DC servo

Tape Type: type I, FeCr, Cr02, Metal

Noise Reduction: B

Frequency Response: 20Hz to 20kHz  (Metal tape)

Signal to Noise Ratio: 69dB  (dolby B)

Wow and Flutter: 0.035%

Total Harmonic Distortion: 0.4%

Dimensions: 440 x 150 x 360mm

Year: 1979


service manual   Deutsch - Ivy Caudieus

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Reviewed Aug 28th, 2014 by TheSleezstak

My quadraphonic system needed a silver face tape deck. After getting burned twice by dishonest sellers and a audio repair shop, the Dual was my forth attempt to add the missing link to my system. I love tapes, cassette players, and the whole process. So I have gone through so many tape decks in my life its disgusting. Only the Dual C830 has yet to piss me off. It works wonderfully and its 30+ years old with no problems! Its build is top notch, solid, precise, tuff, heavy duty, and not afraid to get the job done right- play back is loud and clear and without sound or mechanical issues. I plays quiet. All buttons, switches, dials, and display lights are flawless. And watching someone trying to figure out how to eject the cassette is pure entertainment.
**The best cassette deck I have owned.



This website is not affiliated with or sponsored by Dual. To purchase C 830 spares or accessories, please contact the company via their website or visit an authorised retailer.