The appearance is neat and generous, and the craftsmanship is exquisite, which makes people feel amazing at first sight and still feel good bye. The machine is cost-effective, the middle and high frequencies are clear and sweet, the sound is beautiful and pleasant, the sound field is open, clear and full, the middle and low frequencies are prominent, flexible, and the treble is soft and smooth. Two 9018JPA chips are used for decoding, which is an excellent decoding chip in HIF1 audio products, and the sound quality is very good. The sound is modern. The operational amplifier adopts four high-performance professional audio amplifier OPA604 from American BB Company for I/V signal conversion. This machine is specially designed with a balanced electronic tube output function. The electronic tube amplification is the soul of the whole machine, which plays a key sound effect playback function. Owning a CD-MU9 player will improve your taste in life, and you will also be promoted in the audio industry. If you want to be a shrewd enthusiast, you will take the opportunity to take her home.