10 Inch 7 1/2 or 15 IPS. Unit Calibrated to pro standard NAB. High Bias and EQ for 15 IPS, Low bias and EQ for 7 1/2 IPS. Set up for maxell UD35 or Ampex 456. Heads 85% good(This means the record/ erase/ play heads on the unit have very little wear, about 10% worn so a good wear path from low tape use is established. This can be a good thing as now the pitch can be more precisely calibrated on the tape and record/ play quality will be excellent for a long time (10-20 years) before heads wear to 50/60% good. Then calibration should be done again) Reels and tables in nice condition. Excellent face but typical light, superficial finger wear. Very clean wood sides. Main belt replaced. All controls and switches cleaned twice. . #8+ condition.