"We have been using your Digital Error Detector (DED) and the CD-CHECK disc for some time now and are very pleased with the results. Looking after 30 or so CD players and close to 50 DAT recorders in our station has just become a lot easier. We use the disc (CD-CHECK) to evaluate the CD players before they fail in an on air situation, or whenever an operator reports questionable operation. The DED has improved the reliability of the DAT machines, allowing us to check out the decks after repairs, and routinely before they fail. Keep up the good work ..." Ralph Keeping, Maintenance Coordinator, CBC Radio, Canada ... MORE 1

Ensure 100% of sound reproduction with DED the Digital Error Detector !

Digital errors are the result of data loss and lead to faulty sound reproduction. This manifests itself as poor stereo imaging, lack of clarity, transient-response and dynamic - range distortions. In more severe cases, it leads to audible clicks and muting.
DEDTM is a sophisticated electronic device which for the first time allows continuous monitoring of the digital output signal and the digital link from CD / DVD players, DAT recorders and many other digital sources.	1	1

How is DED used? The DED's front panel has 3 diodes: green - indicating power, yellow - indicating proper link and red - indicating data errors. Flickering of the error diode is an early warning that there is a problem with the media (CD, CD-R, CD-RW or DAT) and/or with the CD or DAT player. For instructions on how to connect DED to your CD or DAT player click here. DED and the CD-CHECK compact disc DED can be used with a CD-CHECK disc and other tracking-testing discs (a CD player with optical or coaxial output is required). Play the CD-CHECK disc and observe the red error diode to flash whenever there is an error. Flash of the diode is accompanied by the distinctive click or muting of the audio signal which can be heard in speakers or headphones. This allows for the objective measure of the "error correction headroom" (i.e. player's ability to correct data errors) and tracking (i.e. player's ability to stay on track despite of disc surface or other errors). The CD-CHECK disc contains special digital signals and error patterns to quickly, safely and routinely perform tests. Who benefits the most from using DED? DED should be of importance to recording studios, radio stations, sound archives, duplication centers, service centers, audiology clinics, sound research centers, theaters, concert halls, ice skating events and to audiophiles and all those who are concerned about quality and faithful reproduction of music and sound. Intercepting errors will allow you to avoid embarrassing skipping and muting of sound during public performances and other events.

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DED Technical Specifications Built to professional and audiophile standards. Custom-made metal case. Provides two digital inputs - optical and coaxial. Supported formats are AES/EBU and S/PDIF. Coaxial input is 75 Ohms unbalanced. Can be put in a series with other digital devices (as a line tap). Custom input impedance is available. Maximum sampling frequency is 48 kHz. Maximum amplitude resolution is 24 bits. Requires 6 --> 12 V DC power supply with minimum 100 mA capability (DED uses only 40 mA). A single 500mA power supply can feed up to 10 DEDs. Very small: 7.7 cm x 8 cm x 2.5 cm (W x D x H) and weights 210 g. Can work either in horizontal or vertical position. No ventilation required due to low power consumption. Comes in black or silver surface finish. DED carries 1-Year Warranty for parts and labor.

Some of the uses of DEDTM continuous monitoring of data errors from CD/DVD players, DAT recorders and other digital audio sources continuous monitoring of digital link from CD/DVD players, DAT recorders and other digital audio sources early failure-warning system for CD/DVD players, DAT recorders and other digital audio sources evaluation of CD / DVD players quality, reliability and durability (with CD-CHECK) improve and maintain top CD / DVD player and DAT recorder performance save the laser lens and heads - check if cleaning is really needed evaluate effectiveness and safety of sound-enhancing devices verification of recorded and blank recording media (CDs, CD-Rs, CD-RWs, DATs)

DEDpro version offers an LCD error counter at additional cost Click on the picture to learn more about DEDpro

Choose from a number of accessories available at additional cost for both DED and DEDpro devices.

Interested in buying DED? DED is offered at an introductory price of only $295 CAD plus shipping and handling and for a limited time includes a free copy of CD-CHECK (value $49.95 CAD!). DED is available in black or silver and carries 1-Year Warranty for parts and labor. Payment Methods Money order, wire transfer Transaction Currency Canadian Dollars ($CAD) Order Processing Within 5 business days from the day payment is received Shipment World-wide; via Canada Post air mail To place an order using wire transfer or money order fill out this   OUT OF STOCK

We are looking for DED distributors. Please contact us directly for details.

Suggested Reading: Consequences of Nyquist Theorem for Acoustic Signals Stored in Digital Format How to Evaluate CD Players -- and How NOT to Enhance Their Performance

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