Bluetooth sound is pretty good, not sure about USB/SD, FM doesn't exist. The remote works decently, a bit quirky and nowhere near as good as a regular TV remote, but is still reasonably responsive (actually works pretty well in USB/SD mode). It is possible to switch off the amplifier with the remote control (low power standby), which also disables Bluetooth. This is a very important feature for Bluetooth to work. If you want a pure Bluetooth amplifier, I would recommend this one. Don't buy it for USB/SD. Pay attention to the external power supply and the DC jack.
FiiO BTA30: Advanced Wireless Bluetooth 5.0 Long Range π Transmitter Receiver for PC/TV/Speaker/Headphone with HiFi Dac/DSP and Streamlined APP Control
15 Review
AIMPIRE AD10 Mini USB DAC CSS XMOS XU208 ES9018K2M OPA2134 HIFI Audio Decoder Amplifier For Enhanced Audio Performance
20 Review
Bluetooth adapter Baseus BA01 black 1 pc.
95 Review
Nobsound Dual TPA3116 Digital Power Amplifier - High-Fidelity Stereo Amp With NE5532P Pre-Amp, Audiophile-Grade 2.0 Channel And 100WΓ2 Output (Black)
13 Review
AUNA Connect 150 Black 2.1 Wi-Fi Internet Radio Music Player With MP3 USB Port, AUX & Remote Control - Black
16 Review
Radio receiver Max MR-322 anthracite
14 Review
Experience Dynamic Audio with Panasonic SC-UX100 CD & USB Wireless Bluetooth 300W Mini Hi-Fi System Shelf Stereo
19 Review
KLIM CD Boombox Portable Audio Player with FM Radio, Rechargeable Battery, Bluetooth, MP3, AUX, Neodymium Speakers, and Upgraded CD Laser Lens (2021 Edition)
11 Review