Fosi Audio BT20A PRO is a $ 99.99 USD HIFI Desktop Speaker Amplifier, with Bluetooth 5.0, promising 300w x2 Power for Speakers, and running in Class D, with a line out too. It will be compared to other speaker amplifiers from the price range, including AIYIMA A07 PRO (89 USD), Fosi Audio BT30D PRO (109 USD), and Arylic A50+ (200 USD).
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