Shamrock tapes were a good alternative, at 1/4 of the price, for the expensive BASF, Philips, Agfa-Gevaert and Maxell tapes, back in the seventies. Recordings were pretty OK especially @ 19 cm/s. But in the long term these tapes start to squeek terribly and they cannot be used. Because I liked the reels, I cut most of my Shamrocks from the reel.
AMPEX Model 200/200A Tape Machine
From the 1983 Tascam Series 30 brochure, the model 38, and the model 32.
1977 Tandberg 3500X tape recorder ad in Phantom Productions vintage tape recorder collection
Le magnétophone à bandes
