Authentic, sound quality is acceptable, bass diving is acceptable but not shocking, the voice is still clear, and the machine is in the oven, looking forward to better

BOSE didn't disappoint me. I began to like BOSE from SLIIII. I am not a fan. My personal opinion is that the sound quality is American style. The sound quality is durable, very durable. I like one!

The workmanship is slightly defective. My SLIII is made in Malaysia and the st30 is made in Mexico. Is that why?

In a word, it's ok. I don't regret buying it!

I have been planning to buy the touch 20, and finally got it. I tried to play it in the company immediately. The sound quality is good, very satisfied, and I feel it is the sound of nature. It's just that the protective film on the small LCD screen is not pasted very well. It seems that the protective film has been removed and pasted again.