Description
Ultimate-Grade Stereo Voltage Amplifier Driver Module
The STK3152III is the premier "Series III" thick-film hybrid integrated circuit from Sanyo. Engineered specifically as the high-gain voltage amplification stage, this module is designed to drive high-power output sections delivering an impressive 120W to 150W per channel with clinical precision.
This "Mark III" variant is the most advanced in the 3152 family, featuring an internal current mirror circuit that achieves a staggering 0.005% Total Harmonic Distortion (THD). It is a critical component for restoring flagship-level vintage Hi-Fi receivers and massive power amplifiers where signal integrity is the highest priority.
Key Technical Features:
- Application: Professional voltage amplification for 150W stereo power stages.
- Ultra-Low Distortion: Audiophile-grade 0.005% THD due to refined current mirror architecture.
- Configuration: 2-Channel (Stereo) in a 15-pin hybrid package.
- High Voltage Handling: Designed for high-rail dual supplies (Maximum ±90V; Recommended ±60V to ±72V).
- Stability: Optimized AC amplifier configuration eliminates the need for external midpoint adjustment circuits.
Installation & Safety:
The STK3152III operates at very high voltages. Ensure all power supply filter capacitors are fully discharged before installation. Because this module drives the final power stage, any short in the output transistors can immediately damage a new STK3152III. We strongly recommend a full diagnostic of the output stage and emitter resistors before powering up.
Pro Tip: Use premium thermal grease and ensure a perfectly flat mounting surface to maintain the thermal stability required for 150W-class performance.