The STK412-530 is often found in mid-to-high-end bookshelf stereos and home theater receivers from brands like Sony, Kenwood, and Sanyo.
Built-in circuitry to shut things down before they melt.
Safe continuous output of 120W + 120W at 6Ω with an ultra-low THD of across the full audible spectrum ( stk412530 datasheet
As of 2025, Sanyo (now ON Semiconductor) has discontinued these hybrids for nearly two decades. The datasheet is easy to find (search for the PDF), but the chip is not. Most "STK412-530" units sold online are counterfeit Chinese clones. A genuine datasheet describes a chip with a specific beige ceramic substrate; counterfeits are often black epoxy with lower current handling.
: 0.7% to 0.8% across 20Hz to 20kHz.
The STK412-530 is celebrated for its ability to deliver high output power while maintaining low distortion. Below are the typical electrical characteristics found in the datasheet: Class H (Dual Power Supply)
The IC features a built-in shift power supply circuit that controls (switches) the supply voltage to the power transistors based on the input signal level. This dynamic voltage adjustment ensures high efficiency, reduced power consumption, and decreased thermal output compared to conventional Class AB amplifiers. The STK412-530 is often found in mid-to-high-end bookshelf
It is important to note that the STK412‑530 was used in numerous commercial audio products from brands such as (e.g., DCA‑500, DCA‑700), Pioneer (A‑202, A‑302), Sony (TA‑F555, STR‑DE545), and Kenwood (KA‑302, KA‑502). When servicing these units, verifying the original part number and consulting the service manual is essential.
Positive and negative input for Channel 1 and Channel 2. Feedback Pins: To control gain and minimize distortion. Power Supply Pins: Dual voltage inputs ( ) to feed the shift power supply. Ground: Signal and Power Ground. Output Pins: Speaker outputs for both channels. The datasheet is easy to find (search for
Ready to start building? You can find original or replacement modules at retailers like: STK412-530
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