Stk413-430 Circuit Diagram (500+ RELIABLE)

Several similar models exist with different power ratings but identical pinouts and application circuits:

These are all pin-compatible. However, the power supply voltage must be adjusted accordingly. For example, an STK417-430 requires ±42V, which would destroy an STK413-430.

Always verify the marking: STK413-430 has “-430” suffix indicating the specific power variant. stk413-430 circuit diagram

Before analyzing the circuit, let us review the electrical characteristics. Operating at ±27.5V (typical) to ±38V (maximum), the STK413-430 delivers:

These specifications indicate a medium-power amplifier suitable for bookshelf speakers or small to mid-sized listening rooms. Several similar models exist with different power ratings

Power supply section

Input section (Left channel shown)

Output & Bootstrap

Right channel is identical using pins 7, 6, 5, 2, 1, 4, 3. These are all pin-compatible

Zobel network (per channel):

Muting (if present) – Usually not needed; leave unconnected.