| Model | SU-A4Mk2 |
| Year | 83-88 |
| Frequency response | 0-100 |
| Maximum output | 8 |
| Harmonic distortion | 0.01 |
| IM distortion | 0.01 |
| Tape loops | 2 |
| MM sensitivity | 2.5 |
| MM overload | 150 |
| MM s/n ratio | 92 |
| High level sensitivity | 150 |
| Phono input impedance | 47K |
| Moving coil input | YES |
| Weight | 17.6 |
| Price | 1400.00 |