I have an Onkyo now that I use; it has the bias adjustment I wonder if it is the same one you had? The best deck I ever had was a Denon top of the line 3-head bias adjust but not auto reverse. I hate auto rverse but nowadays they all have that feature. The Denon had a time remaining feature. Not a counter but a circuit that read the tape spool and totaled the remainig time on the tape then read it out in actual minutes and seconds. It was so accurate I could make tapes that followed the song times to the 2/3 second mark. I could make recordings where The tape would end at 5 sec. after the final song. Great sounding tapes with perfect time signatures. The deck got old and I contacted every Denon guy up to the North American rep. But no one would repair that aspect of the unit when it failed. Now I can't find that feature.