FA: Ampex AG-300 8 Track Sel-Sync Units
 

Very scarce factory accessory set for a vintage 8 track, 1" Ampex
AG300 tape recorder. These units allowed an engineer to switch track
monitoring using front panel controls from normal to "Sel-Sync"
while overdubbing. Mint condition!


Auction link:
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=3735647924