I use this paired with my Alexa via bluetooth to power our ceiling speakers in the kitchen and send the signal to my distribution amplifier for the rest of the house. I am very happy that the speaker impedance can be chosen for my application. It works great, is very powerful and sounds great. It had all the right features and I/O that I needed, but I don't need or use a USB connection. This is a strictly standalone device. I really like its compactness; and while the price isn't cheap, it's still value for money given the quality of the preamps and feature set. My only small issue is that for the price it doesn't have a remote control. I bought mine in 2017 and I'm glad but not surprised it's still in production. Mine has held up well for years and has proven to be as durable as I expected.
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