Ampex 456 or 499 which is best?

marksmith

New member
I have Aquired several 10.5" reels of both Ampex 456 and
Ampex 499 tape.
Does anybody know what the differences are between them
and what they are most suitable for".
Can't find any mention on the Ampex site of these tapes.
I use a Revox A77 recorder running at 15ips.
 
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