The HT66F50 is an electronic component manufactured by Holtek that is rated for RoHS (Restriction of Hazardous Substances) compliance. It is a 0.8V 4-channel low-power high frequency amplifier and is packaged in a Holtek LQFP-44 lead package. The HT66F50 includes a built-in low-noise high frequency amplifier that features stability, low-power control, and low-profile form factor. This device is suitable for multiple applications, including digital audio, noise reduction, and electronic (consumer) products. It features low-distortion output, high gain with low feedback, and low output impedance for improved performance and efficacy.