| Manufacturer | Part Number | Description |
|---|---|---|
SANYO (now Panasonic) |
STK437 | Single Power Supply / 2Ch Amplifier |
|
SANYO (now Panasonic) |
STK4372 | Dual Channel min AF Power AMP. |
| Unknown Manufacturer | STK435 | (STK433 / STK436 / STK437 / STK439) THICK FILM HYBRID IC |
| Unknown Manufacturer | STK437-xxx | (STK4xx) 2-Channel 5 to AF Power Amp |
