Description
High-Fidelity 150W Audiophile Power Amplifier Module
The STK4048V is a premium thick-film hybrid integrated circuit from Sanyo's elite "V" series. Engineered for massive output and clinical precision, this module delivers 150 Watts of power with an ultra-low Total Harmonic Distortion (THD) of just 0.08%. It is the definitive choice for restoring flagship Hi-Fi receivers and high-end power amplifiers where sound purity is the primary requirement.
The Series V revision features a sophisticated internal current mirror and cascode architecture that ensures a transparent, detailed soundstage, making it a favorite among audiophile restorers worldwide.
Key Technical Features:
- Continuous Power Output: 150W Minimum (at 8Ω, 20Hz to 20kHz, THD = 0.08%).
- Distortion Performance: Ultra-low 0.08% THD for professional studio-quality audio.
- Configuration: Mono (Single Channel) in an 18-pin SIP package.
- Frequency Response: Optimized for high-bandwidth audio from 20Hz to 50kHz.
- Operating Voltage: Recommended supply of ±60V (Absolute Maximum ±87V).
- Pin Compatibility: Pin-compatible with the 120W to 200W family (Series II, V, and XI).
Installation & Safety:
Due to the massive energy potential of a 150W hybrid IC, the STK4048V must be securely mounted to a large, high-mass heatsink with premium thermal grease. Because this module lacks internal short-circuit protection, it is critical to verify the health of the speaker protection relay and external current-limiting circuits before installation.
Technician's Note: Always discharge power supply filter capacitors before replacement. The rails for this IC can exceed ±80V, which can be lethal to the IC and dangerous for the technician if handled improperly.