Quantegy (Ampex) 456, SP, 5" Reel Tape, 600 ft, NOS Sealed

Ampex was spun off to form Quantegy in 1995. No DP or TP versions of this formulations were made to our knowledge. The 499 was only available in SP. A successor to the 356 / 357, the first type 5 (high output +6) tapes produced.

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