AD-89D is an Hi-Fi integrated amplifier, which designed with Tonewinner's 30 years technical experience,and to meet the market desire of multi-functions.This product combined with multi-functions such as CD player, streaming media player, preamp decoder and amplifier. The circuit is mature and stable, the materials are solid and high quality, making the product reliable and durable.The sound is round and delicate, the cost performance is extremely high, it is the representative masterpieces of the new generation of digital Hi-Fi amplifier.