It's definitely small and inexpensive, but you get what you pay for. It's quite loud/hissing, more than I thought it would be. I thought since it has an auto shut off feature it would also turn on automatically but it doesn't. That was the main reason I bought it too, well, back to the drawing board. Edit: I disassembled it to see the innards, it's not much, see picture.
Denon PMA-800NE Hi-Fi Stereo Integrated Amplifier, 85W x 2 Channels, Built-In Phono Pre-Amp, Analog Mode, Advanced High Current Power, Black
20 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
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
Experience Hi-Fi Amplification and Alexa Compatibility π with Denon DRA-800H Network Receiver for Home Theater
15 Review
Sangean PR-D4W Portable Weather Alert Radio with AM/FM Bandwidth Narrowing and Auto Tracking for Improved Searchability
12 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
AUNA Connect 150 Black 2.1 Wi-Fi Internet Radio Music Player With MP3 USB Port, AUX & Remote Control - Black
16 Review
Experience Dynamic Audio with Panasonic SC-UX100 CD & USB Wireless Bluetooth 300W Mini Hi-Fi System Shelf Stereo
19 Review