What transistor should we use at second stage?
It is a golden rule in designing power amplifier to
use high quality capacitor and to use
devices with superior current-linearity at second stage.
| Kaneta method | A606,J72 | |
| SONY | TA-FA7ES | J313 |
| VICTOR | M7050 | A777 |
| TRIO | KA-7300D | A899 |
| YAMAHA | B-3 | A818 |