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Key Specifications & Features Package Type: SIP-9 (9-pin Single Inline Package). Power Output: Approximately 4.4 Watts – 4.5 Watts. Maximum Supply Voltage: Rated for up to 18V operations. Internal Architecture: Built using 18 distinct internal transistors for clear audio amplification. Primary Applications: Legacy car stereos, radio receivers, older television audio stages, and tone control preamp circuits.