TDK A 90 Compact Audio Cassette Posted on November 2, 2010November 3, 2010 by Duncan Toms TDK A 90 Compact Audio Cassette, originally uploaded by :Duncan. Normal Bias 120 EQ Black case with red and white label. White lettering. A90? I didn’t know there was an A90. Advertisement Share this:FacebookTwitterTumblrRedditPinterestEmailLike this:Like Loading... Related