Ampex TAPE-406
Not much is documented about the Ampex TAPE-406. The one concrete trace in the period record is a classified listing in Audio (August 1979, p.110) advertising "new Ampex mastering tape 406" on 7-inch reels at $2.25. The same ad also offered Ampex mastering tape 407 on 7-inch reels at $3.25, which suggests the 406 was the cheaper stock in Ampex's tape line.
Past that listing, almost nothing survives. No factory literature, technical specifications, packaging details, or production dates have been located. The Archive's research files hold no other mention of the TAPE-406 in any manual, directory, or review. The record rests on that single classified ad.
Known from period sources:
- Sold as Ampex mastering tape, stock no. 406
- 7-inch reel format
- Advertised at $2.25 (1979)
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