Sony was a manufacturer of low cost one motor reel to reel tape decks in the 1960s through the 1970s, and was very popular. They also produced a line of reel to reel tapes that has unfortunately proven to be problematic. The started with the PR-150, a type 1 (standard) formulation similar to the Scotch 150. Later they introduced a low noise (type 2) called SLH, later upgrading to a Low Noise / High Output SLH with back coating (type 3) and the ULH, a type 4 tape to compete with Maxell’s UDXL. Although these tapes performed competitively in the day, they primarily suffer from loss of binder lubricant (LBL) causing the tapes to squeal, and many lots of back-coated SLH and ULH suffer from both squealing AND sticky shed syndrome. Sony also produced a Ferrichrome reel to reel tape, which also suffers from LBL. As a result, we do not resell or recommend Sony reel to reel tapes.
How to treat the individual tapes, if you need to transfer the contents of the tapes to digital or make an analog copy, are found on the individual tape pages.