Amplifier Stk412 240

Updated August 15, 2026

Overview

Product sourcing insights & recommendations

23 来源

The STK412-240 is a specialized Class-AB hybrid audio power amplifier IC, primarily valued in the repair and custom audio markets for its high output power and fidelity. While it is increasingly considered a "legacy" component due to the rise of Class-D digital amplifiers, it remains in steady demand for home theater systems and professional PA equipment.

Product Specifications & Performance

The STK412-240 (and its common variant STK412-240M) is designed for high-power stereo applications, offering a balance of efficiency and low noise Utsource Alibaba.

* Output Power: Delivering 150W + 150W per channel at typical supply voltages of ±41V Utsource.

* Audio Quality: Features a very low Total Harmonic Distortion (THD) of 0.007%, making it suitable for high-fidelity audio reproduction Utsource.

* Thermal Design: Built on a thick-film ceramic substrate with a thermal resistance of 1.1°C/W, requiring a substantial heatsink for safe operation Utsource Alibaba.

* Package: Standard SIP-ZIP (22-pin) configuration, common in vintage and specialized audio boards Alibaba Utsource.

Market Trends & Insights

* Availability vs. Obsolescence: As a Sanyo-legacy product, original factory stock is tightening. The market is currently driven by "New Original" chips from specialist distributors and high-quality Class-H/AB module boards that incorporate these ICs for easier integration Made-In-China Alibaba.

* Sourcing Shift: Buyers are moving toward pre-assembled amplifier boards rather than bare ICs. These boards often include "fever-grade" components like gold-plated PCB traces, which are trending among audiophiles Alibaba.

* Pricing Dynamics: Unit prices on B2B platforms range from $4.98 to $8.99 depending on quantity and supplier verification status. Some premium original components can reach over $70 in retail markets Alibaba Nesselectronics.

* Growth Drivers: The market for high-power amplifier modules is seeing a 7.8% CAGR, fueled by the continued popularity of professional audio systems and the retro-fitting of vintage home audio gear Strategicmarketresearch.

I have compiled a list of current products and suppliers for the STK412-240, including specifications and pricing for your review.

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Sources & References

23 sources cited · Verified industry data & reports

STK412 Series Amplifier Specifications | PDF

Scribd

Key details include output power ranges from 30W to 200W, voltage supply ranges from ±34V to ±85V, and applications in audio equipment like subwoofers and multi ...

STK412-240 Datasheet, PDF

ALLDATASHEET.COM

STK412-240 Datasheet. 2MbKb/31P. Part #: STK412-240. Manufacturer: List of Unclassifed Manufacturers. Description: SEMICONDUCTORS. 1 Results.

Amplifier Stk412 240 Overview: Composition, Standards, ...

Alibaba.com

The STK 412-240 delivers a substantial output power of 120 watts per channel at a standard load of 8 ohms, making it ideal for driving medium to ...

STK412-240 Elec-component United States (USA) Supplier ...

utsource.us

2-CHANNEL AF POWER AMP Type: SIP-ZIP Brand: SANYO Description: The STK412-240 is an audio power amplifier manufactured by Sanyo. It is an 8-pin SIP-ZIP ...

STK412-170

agelectronica.lat

Pin compatible IC series that covers power ratings from. 50 W × 2 channels to 180 W × 2 channels at 0.7 or 0.8%. THD, 20 Hz to 20 kHz.

STK412-240 Datasheet Results – Compare Manufacturers

Datasheet4U

Compare STK412-240 datasheet versions across manufacturers. Select a manufacturer to view the full PDF datasheet and specifications.

Amplifier Stk412 240

Overview

Product Specifications & Performance

Market Trends & Insights

Stk412 240 Amplifier Module

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Sources & References