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I second Seth's advise, but here is another alternative (good luck 
finding a machine you can afford now): Studer A820.  They do everything 
you request and then some. I just transferred a box full of Euro spec 
open reel quarter inch, acetate, at 15ips CCIR, with AEG hubs and 
platter.  The heads you can get modified by John French at JRF Magnetics 
[1].  He is the best and has modified all my head stacks for these 
purposes.

If you need help, just drop me a line.

Best,

Andreas

On 2021-11-19 15:22, Dennis Rooney wrote:

> Seth Winner advised me of the following:
> 
> They need a European OTARI 5050 B II and III. The B II has the 
> non-locking
> reel tables that are needed when you are using the DIN adapters.
> 
> DDR
> 
> On Fri, Nov 19, 2021 at 3:23 PM Walker, Dave M. <
> [log in to unmask]> wrote:
> 
>> Hello,
>> 
>> The Smithsonian Center for Folklife and Cultural Heritage has an 
>> upcoming
>> archival audio preservation project in the country Georgia 
>> (Sakartvelo) and
>> is seeking recommendations for 1/4" open reel tape machines natively
>> operable on 220V/50Hz AC. In addition, we are seeking sources for a
>> refurbished machine suitable for preservation work meeting the 
>> following
>> specifications:
>> 
>> *   Capable of handling fragile acetate-backed 1/4" open reel audio 
>> tape
>> *   Has a minimum of three playback speeds: 3.75 ips, 7.5 ips, 15 ips
>> (38.1 cm/s, 19.05 cm/s, 9.525 cm/s)
>> *   Has quarter-track stereo and half-track stereo (NAB or DIN) heads
>> *   Operates on 220V/50Hz power without the use of step-up 
>> transformers;
>> switchable is okay
>> *   Capable of handling reel sizes up to 10.5" (NAB or AEG DIN)
>> *   Optional: switchable NAB/CCIR (IEC) EQ
>> 
>> If you have any information, questions, or potential sources for
>> professional machines meeting these requirements, feel free to direct
>> responses to me off-list at [log in to unmask] Thank you for your time!
>> 
>> Regards,
>> 
>> Dave
>> 
>> -------------
>> Dave Walker
>> Audiovisual Archivist​
>> Smithsonian Institution
>> Center for Folklife and Cultural Heritage
>> Ralph Rinzler Folklife Archives and Collections
>> office: (202) 633-0663


Links:
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[1] https://www.jrfmagnetics.com