The AD-66D is based on the AD-66Pro with a high quality audio decoder. Support TF card, U disk and other high-quality music local playback, support mobile APP control, simple and convenient operation; Built-in professional high-quality audio decoding chip, it is a hi-Fi power amplifier with high fidelity and low distortion, with excellent musical performance. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.