Description
Ultimate-Grade 70W Audiophile Mono Power Amplifier Module
The STK4040XI represents the pinnacle of Sanyo’s thick-film hybrid technology. As part of the prestigious "Series XI," this module is engineered for clinical accuracy and absolute signal purity. It delivers a continuous 70 Watts of power with a staggering Total Harmonic Distortion (THD) of just 0.008%, effectively reaching the limits of analog transparency.
This mono module is the definitive choice for audiophile mono-block builds, high-end center channel restorations, and premium active monitors where zero signal coloration is required. Its advanced internal cascode and current mirror circuitry provide a noise floor that is virtually silent, ensuring every nuance of the original recording is preserved.
Key Technical Features:
- Continuous Power Output: 70W min (at 8Ω, 20Hz to 20kHz, THD = 0.008%).
- Master-Grade Distortion: 0.008% THD for unmatched sonic transparency.
- Configuration: Mono (Single Channel) in a 15-pin hybrid package.
- Frequency Response: Optimized for high-bandwidth audio from 20Hz to 50kHz (+0, -3dB).
- Operating Voltage: Recommended supply of ±43.5V (Absolute Maximum ±63V).
- Pin Compatibility: Member of the 50W to 150W "XI" series for flexible power scaling and upgrades.
Installation & Thermal Management:
Due to its high-precision architecture, the STK4040XI must be securely mounted to a substantial, high-mass heatsink using premium thermal grease. Operating the module without a heatsink—even for a brief functional test—will result in immediate and permanent internal substrate failure.
Technician's Note: Verify that your power supply rails are healthy and balanced at ±43.5V. For the best performance from this "XI" series chip, we recommend using high-quality low-ESR filtering capacitors in the power stage to maintain the ultra-low 0.008% THD specification.