Product Details:
STK402-240 is a high-end audio power amplifier chip launched by Sanyo, with its core advantages being ultra-low distortion of 0.01% and superior performance. From the parameters, it has been measured to have a thrust equivalent to Class D 100W with an output power of 25W/8 Ω. It features a sound style with Class A control power, rich and full mid frequency, delicate vocal reproduction, and a warm and smooth texture like a gallbladder machine. The high-frequency extension is smooth and not harsh, and the low-frequency diving has elasticity. Its dynamic performance is better than traditional Class A and Class B amplifiers, and it is suitable for driving 3-5 inch bookshelf boxes or monitoring speakers..
1:) This amplifier is developed and produced according to standard products, and all components are original and genuine.
2:) Bluetooth 5.3 chip, stable performance, fast transmission speed.
3:) Brand new genuine Sanyo STK402-240 chip with harmonic distortion as low as 0.01%.
4:) Customized pure copper wire power supply 120W Toroidal transformer.
5:) The radiator is directly connected to the upper and lower cover plates of the chassis, increasing the thermal conductivity area and improving the heat dissipation effect.
6:)Using well-known brand filtering capacitors and ALPS16 volume potentiometer
7:) Equipped with comprehensive overcurrent, overload, and short-circuit protection functions
Specifications:
Working mode: Class AB
Bluetooth solution: Bluetooth 5.3
Static current: 60mA
Output power: 25W/8 Ω, 30W/4 Ω
Harmonic distortion: 0.01%
Magnification factor: 31 times
Frequency response: 10Hz to 90kHz
Input sensitivity: 450mV
Dynamic range:>100 dB
Size: 155 * 60 * 310MM (excluding protruding positions)
Weight: 2.8KG
Package List:
1 × Finished STK402 amplifier 
