What is the best Reel To Reel machine ever built?


Everyone who has listened to master tapes or dubs knows about the well balanced sound they provide. But it is also important to have a fine tape recorder or playing machine to enjoy the tapes' qualities in a good system.
Maybe my question was raised once before but the relevance of the topic is now greater as the tapes are back to more and more audiophile friends, especially those who are owning excellent phono chains.

I have seen many big & professional machines being recently offered and sold on e-bay, Audiogon and other platforms and I am discussing within a small group which machine is really the "holy grail" among the R2Rs. So why not here. I am interested in findings.
thuchan
At present we have the Ampex 351-2 (updated), the Studer, a very nice Sony (allows you to change from 1/4" to 1/2" tape in seconds), an Otari and a Tascam.

In the past I used to do a lot of the on-location work with a Magnacord, a nice tube machine that is excellent but does not get much mention.

Mike is right about the rather crude setup of the Ampex 350 transport (we also have a 300 transport and things are no better with it). When I did the update/upgrade of the Ampex I chose the AG-440 transport. At least it has automatic head lifters! It also has a flutter idler in the headnest.

Years ago I did a recording of a large choral/orchestral work called Canto General. Mikas Theodorakis was in town to conduct, so I didn't want any screwups. So I used two tape machines, the Studer A-80 and the Ampex and made two master tapes. In playback the Ampex could use either tape and was obviously more musical than the Studer. The Ampex-made tape also sounded better on the Studer than the tape that it made. Both machines were in good condition and this was in 1986.

Now the difference I heard was one that is often described as the difference between tubes and transistors, so if you prefer transistors you may well have liked the Studer's tape more. I have to say- it was/is damned impressive.

The biggest weakness I have heard in tape machines is actually in record mode- transistor machines are prone to a certain kind of modulation noise that shows up most in simple passages. This is due to the head driver transistor being sensitive to the bias signal- special traps have to be used in SS machines to reduce this problem. Tube machines are immune.

So if you are in playback only IMO you have greater flexibility about which machine is the 'best', however it will certainly be a mastering deck unless somebody has really tweaked the hell out of a lessor machine. BTW the mastering machines respond really well to such tweaking. We have replaced every chip and coupling cap in sight in the Sony and the results were spectacular.
Thucan, is it stll possible to pick up a like new rehabbed Crown or Tandberg R2R? If so where?? Here on S'gon or eBay??
Hey R2R mavens, got a question. Just checked eBay and saw there a number of Crown R2Rs: (1) a Crown 800 and (2) Crown SX-724. Both drive only 1/4" tape. Are these good units? Is 1/4" tape the tape of choice, as compared to something wider?
Atmasphere,
you are describing deep experiences with R2Rs. I share your assessments you made so far and it shows that looking on master tape machines needs a more detailed approach and comes to different results than the repair facility which Mike mentioned believes.

And of course it us all about recording quality and the transistor/tube output of the mastering deck. One may ask if we do need the technical options of a big studio machine but when you operate one of the giants, let's say the A820, it is a lot of fun and a very nice haptic feeling you have.

This is also part of the story. You have this with the C37 as well whenever the transport mechanism is not as soft as with the A820 and maybe the Ampex.
Bifwynne,
I have no experience with the Crowns. Tandbergs you find on ebay or here on Audiogon. I would recommend going for a 1/2" if you looking for quality recording & playback.

best @ fun only