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Just got a Revox A77 and Sony TC-558.

24.20.100.228

Posted on June 30, 2022 at 13:47:24
Coner
Audiophile

Posts: 3439
Location: S.W. Washington state, USA
Joined: November 17, 2001
So, I can't tell what version the A77 is, don't see any info sticker or anything. It is the brushed chrome one, not grey. Missing the two left side black knobs. I don't know much about these.

the Sony looks in exc. condition, but missing the power cord. Have not powered up, so anything can happen or not. I had a TC-758, so kind of familiar, this seems to be the 7" version.

 

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Post the picture, posted on June 30, 2022 at 19:00:49
Victor Khomenko
Manufacturer

Posts: 50292
Joined: April 5, 2000
One can tell by its appearance, there are sites that list all the distinguishing characteristics. For instance, the original did not have tension arm, and so on. The type of push buttons, etc.

The link below is useful, but I remember seeing a better one, if I find it I will post it here.

Nice machine, so congratulations!


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  • Thanks, very helpful. It's either the 1 or 2 model, can't find serial# ~nt, posted on June 30, 2022 at 23:27:17
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    nt

     

    Should be a sticker..., posted on July 1, 2022 at 07:37:29
    Victor Khomenko
    Manufacturer

    Posts: 50292
    Joined: April 5, 2000






    ...behind the small hinged door on the back, where line voltage switch is located.


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  • RE: Should be a sticker..., posted on July 2, 2022 at 10:10:26
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    That sticker is missing. It is 7.5/15 speed. Is that a good thing?. I won't be doing live recording or anything.

     

    Then it is also likely 2-track, posted on July 2, 2022 at 15:33:16
    Victor Khomenko
    Manufacturer

    Posts: 50292
    Joined: April 5, 2000
    Take a look at the heads, you should be able to tell whether they are 2 or 4 track.

    To me a High Speed model is more desirable, but of course everyone has different objectives.

    So this might not be the ideal machine for you, in which case selling it and buying what you really need might be a smart move.

    Again... it all depends on your objectives.


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  • RE: Then it is also likely 2-track, posted on July 2, 2022 at 23:14:59
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    See 2 stripes or bands in the center of heads, so 2-track I guess.

     

    RE: Then it is also likely 2-track, posted on July 3, 2022 at 06:05:32
    Victor Khomenko
    Manufacturer

    Posts: 50292
    Joined: April 5, 2000
    They both have two "stripes" but they have different sizes and spaces, you can find many explanations on line, like here:


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  • RE: Then it is also likely 2-track, posted on July 3, 2022 at 09:55:41
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    Looks like the 2 track diagram, both bands in the middle. Guess not playing any pre-recorded commercial tapes.

     

    4-track machines are not hard to buy, posted on July 3, 2022 at 16:18:57
    Victor Khomenko
    Manufacturer

    Posts: 50292
    Joined: April 5, 2000
    There are also 2-track pre-recorded tapes, but not too many.

    Since you already have the Sony, you should be all set.


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  • I'd use the TC-558 for that uses I imagine. Thx for your guidance ~nt, posted on July 3, 2022 at 19:06:02
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    nt

     

    One more thing to consider..., posted on July 5, 2022 at 08:13:41
    kootenay
    Audiophile

    Posts: 8318
    Location: Calgary, Alberta
    Joined: October 16, 2007
    Contributor
      Since:
    April 6, 2008

    Depending on how it was used and how often you may need to look at the tape brake component to make sure that they are functioning properly. How to troubleshoot if they need a replacement is when you notice the tape starts to spill over when you pushed the stop button during playing and or rewinding the tape. Also, the end of the tape sensor wore out over time, other than that this is a great machine to refurbish/restore.

     

    RE: One more thing to consider..., posted on July 6, 2022 at 21:38:14
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    Yes, was reading that...replace nylon pads with felt, etc.

     

    RE: One more thing to consider..., posted on July 7, 2022 at 12:42:16
    kootenay
    Audiophile

    Posts: 8318
    Location: Calgary, Alberta
    Joined: October 16, 2007
    Contributor
      Since:
    April 6, 2008

    Here's a pic of Revox A77's worn-out brake parts.

     

    RE: One more thing to consider..., posted on July 7, 2022 at 17:01:56
    Coner
    Audiophile

    Posts: 3439
    Location: S.W. Washington state, USA
    Joined: November 17, 2001
    I have not looked inside just yet. The two black center knobs are missing, and not sure the other two are orig....don't match. Trying to source those.
    The clear outer knobs are intact. Also missing the red speaker on/off button. The for./rev.and play hub action seem good, but capstan not really into it.It turns freely, but not near fast enough. This is with no tape threaded on it.

     

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