The Revox A77 Mk4 (Dolby) and it's history

Let's take a look together at a special reel to reel machine, the Revox A77 Mk4. I'll talk a bit about it's history, as well as it's Dolby features.
#reeltoreel #revox #a77 #retro #vintage #dolbyb #dolby #audio #audiohistory

[@drakefallentine8351]

Enjoyed your presentation along with your philosophic outlook on a "by-gone era"... which I never left, come to think of it.
A Lifetime of Recording
No Regrets

[@alvaroaragones2238]

Thanks your video I am getting one if this now! Thank you!

[@berlewi]

Many thanks for such an excellent and informative video!! I really enjoyed watching it.

[@Zacharie17]

What a well-made, and lovely tribute to this mythic and so desirable (in its time) machine.

[@Eric-LB]

Great video! Makes me want an A77 even more! Thanks for sharing

[@davidfox4679]

Lovely video and well presented. If I did not have one (which I do mark 4) I’d immediately get one. I love mine and for the reasons you state.

[@dubdoodle7191]

The most complex A77 (Dolby) to calibrate ! And actually also more complex than the B77 / PR99 calibration.

[@brigittamir7617]

Great !

[@antoniograncino3506]

There are no IC's in the audio circuitry of the A77.

[@callummiller5886]

Nice video

[@koozmusic]

Agreed. Ended on a cliffhanger though. Subbed and waiting for the next video!

[@dyradb8940]

@@koozmusic don't worry, I've got another one in the making :)

[@amonster8mymother]

Which one has varispeed? ❤

[@storm-sf5rj]

i have 2 Mk3 A77's Both with DolbyB a 4 track and a 2 track the 2 track needs the Recording Board re-capped as playback is great but when i record it is terrebly distorted the 4 track Records and Play's back great the only thing that i dislike about the A77's is that it has no pause button,but they put one on the B77's theis machines are probably both 50 years old and still going strong my Ferrograph Logic 7 that i bought new in 1978 died in 1995 and spare parts are scarce and expensive so i will not be getting that fixed but the Revox machines can be fixed easy as their are loads of spares

[@wjekat]

The A77‘s mechanical design and Papst motors are pretty much indestructible and were the benchmark for the industry.
I did a internship at the Uher factory in Munich when the tried to launch a competitor to the B77. What a catastrophe! Even with their decades of experience building single motors decks, they couldn’t come up with a design for a reliable 3 motor, 10 1/2 inch reel deck. They were late to the party and messed up big time. The warranty claims for the SG 630/631 alone were a huge nail in the company’s coffin…

[@LEVRAN]

WOHAAAA

[@robfriedrich2822]

Built in Dolby (A) noise reduction.

[@user-ye3jz7su1p]

Trvox🤔🤔

[@meshplates]

Not s relic at all. Waiting for the next video!

[@wownoflutter9817]

With a properly calibrated A77 (IE. bias / EQ / Repro) dolby is unnecessary.