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Revox A76 Tuner

Submitted by on February 24, 2011 – 10:04 amNo Comment

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 248912305888798020 Revox A76 Tuner

Revox A76 Tuner This is a fabulous tuner - you can't believe you are listening to FM as it has CD quality sound. Picks up FM stations over 100 miles away. I have owned this tuner over ten years and tuner has never been serviced (unmolested). No scratches or dings in wood. Overall excellent cosmetic condition except for minor lifting at top of grey face plate. Includes twin lead and RF antenna connections as shown in photo. No original power cord however will include working replacement power cord. Dark gray face plate upper edge lifting away from unit as seen in image. Have never made attempt to repair or replace this. All lights and functions in working condition. Input voltage selectable. Low reserve set. Tuner will be securely packed and double boxed for shipping. Returns accepted within seven days but tuner must be received in same condition as when shipped. Here is a review excerpt from www.fmtunerinfo.com, a reliable source for detailed information on high end tuner equipment: Revox A76 (see below for dates, $750, front1, front2, back) search eBay We don't know much about the A76, an "all silicon" FM-only tuner, but our contributor Paul Baptista did some research: "There are three versions - A76 (1969-1970), A76 MKII (1970-1974) and A76 MKIII (1974-1977). There are some nice inside pictures at this French link which show 4 gangs and uncommon FM detection/demod using two coaxial delay lines and discrete MPX. It looks to me like the makings of a fine-sounding analog unit." Our contributor John Byrns says that the Revox A76 is "on the list of tuners I would like to own but don't. The coax lines are used as impedances in a detector circuit similar to the Travis discriminator; they are not used as delay lines as in a true delay line detector such as was used in the Fisher TFM-1000. The multiplex decoder is interesting in that it is a pure sum and difference matrix decoder which uses the response of the 38 kHz band pass filter to provide the 50/75 ┬ÁS de-emphasis for the difference component. The A76 is the only tuner I know of that used this type of multiplex decoder circuit -- are there any others I don't know of? There is an add-on multiplex decoder box that uses this type of circuit; if I recall correctly it was the Studio 12 decoder. Revox did chintz by not using a balanced difference channel subcarrier demodulator circuit. The result is a high level of the locally reinserted 38 kHz carrier appearing at the outputs of the matrix, necessitating the use of 38 kHz notch filters in the audio outputs to remove the high-level 38 kHz signal." The A76 usually sells for $185-255 on eBay, with a low of $100 in 11/04.

 248912305888798021 Revox A76 Tuner
 248912305888798022 Revox A76 Tuner
 248912305888798023 Revox A76 Tuner

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