STK433-270, STK433-330, and STK433-130 are thick-film power amplifier modules produced by Sanyo, originally used in the Yamaha RX-V371 integrated amplifier. They are respectively 3-channel and 2-channel Class AB modules, with a maximum output power of up to 150W@6Ω. The STK433-130 has a low signal-to-noise ratio of 0.01%, and is typically used for stereo sound. The sound exhibits good performance, with excellent mid- and high-frequency characteristics, a frequency response up to 50KHz, strong resolution, excellent separation of vocals and instruments, and solid low frequencies.
The STK433-270 power amplifier module is a three-channel 60W device, which outputs signals at full frequency by default. When used as a subwoofer, the bass channel needs to be connected to a low-pass signal input.
Power supply voltage: AC dual 28-35V,
Output power: 3X60W@6Ω
Size: 137*85mm
Note: The default voltage tolerance of the filter capacitor is 50V. If the power supply voltage exceeds 50V, the capacitor needs to be replaced.
This power amplifier module has been tested before shipment. By default, it does not come with a heat sink and requires an additional one for use.
