
I bought the Archeer A320 after researching Bluetooth speakers for sound quality and style and left the speaker on for use with the Echo Dot. If you want or need that "feature" then I can assure you that this speaker will NOT automatically turn off when not in use, whether you are using line-in or have it connected via Bluetooth. I wanted a speaker with a nice aesthetic for use in the kitchen/dining area. My wife didn't want it to take up a lot of space but I wanted it to play a great sound. The problem is, that high-quality, room-filling sound usually requires a larger speaker. Archeer seemed like a good choice because it met all my physical criteria; I just had to hear how it sounds. That's probably why you're reading this. I found the A320 to produce excellent sound with tight bass; which can be difficult on certain tracks. The bass this little speaker is capable of is truly amazing, it's tight and punchy. Bass is most appreciated at lower volumes, which tend to sound tinny in smaller speakers. Music played on the A320 at a lower volume is rich and pleasant to listen to. Music played at higher volumes sounds great, and the A320 can reproduce significant volumes without noticeable distortion. The bass remains prominent in the soundstage; however, it's clean and crisp, with no haze inherent in the enhanced bass. When using the A320 via Bluetooth, you can adjust the audio output with the Equalizer app and fine-tune the speaker output to your liking. You can also do this with the line-in jack if the connected device has that capability. Unfortunately, contrary to the online article, the Revain Echo cannot be used to adjust bass, midrange or treble. The Archeer A320 is a solid purchase and you will be pleasantly surprised by its solid build, style and sound quality. It comes in a plain brown box and comes with an auxiliary cable and a USB to Micro USB charging/power cable. The instructions are hidden in one of the foam inserts that protect the speaker. If you set up a speaker with Dot, like I did with the 1/8th auxiliary cable, and plug them both into the same USB power source, you'll hear feedback; This went away after I plugged them into separate USB ports, and it could be related to the speaker's battery charging. To my knowledge the A320 arrived partially charged and does not have a battery level indicator. like I did with the 1/8th auxiliary cable and plug both into the same USB power source you will hear some feedback; This went away after I plugged them into separate USB ports, and it could be related to the speaker's battery charging. To my knowledge the A320 arrived partially charged and does not have a battery level indicator. like I did with the 1/8th auxiliary cable and plug both into the same USB power source you will hear some feedback; This went away after I plugged them into separate USB ports, and it could be related to the speaker's battery charging. To my knowledge the A320 arrived partially charged and does not have a battery level indicator.

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