Bluetooth 5.0 Power Amplifier 2 Channel Stereo Mini Hi-Fi Integrated Amp 2.0 Wireless Audio Receiver for Home Speakers Headphone 50W x 2 with USB Douk Audio Tone, Black

The Bluetooth 5.0 Power Amplifier is a lightweight and easy-to-set-up audio receiver. It comes with a power supply that produces 65W when used with 4 Ohm speakers, allowing for loud and clear sound. The speaker outputs are inactive when headphones are plugged in, ensuring flexibility in audio usage. The device can be used with 220V power with the appropriate plug adaptor. It has a built-in DAC and headphone amp, making it redundant to use it with a separate DAC and headphone amp. While it can be used outdoors under a cover, it is not designed for use in damp places. The unit also has a USB input which can be used to charge other devices. However, there are some drawbacks to Consider. The amp may not be powerful enough to drive 4 speakers depending on the impedance. The 19V power supply that comes with the amp may have reliability issues. The device does not fully meet the specifications of Bluetooth 5 in terms of range and data capacity, with data loss occurring at around 15 feet. Some users have also experienced sparks when plugging the device into an outlet, raising safety concerns. Other minor issues include the lack of volume indication, a flimsy volume control, and a delay in the power button taking effect. Overall, the Bluetooth 5.0 Power Amplifier provides a convenient and compact solution for amplifying audio, but there are concerns about the power supply, Bluetooth performance, and safety.