STK403-250A is Triple Power Audio Amplifier manufactured by SANYO.
| Part Number | Description |
|---|---|
| STK403-240A | Triple Power Audio Amplifier |
| STK403-120 | 2-Channel AF Power Amplifier |
| STK403-430 | 6-Channel Class AB Audio Power Amplifier IC |
| STK403-440 | 6-Channel Class AB Audio Power Amplifier IC |
| STK403-450 | 6-Channel Class AB Audio Power Amplifier IC |