At Engadget, we’ve tested scads of audio equipment. In our guide to the best Bluetooth speakers and smart speakers, we break down which, out of the thousands out there, are worth your money. Not surprisingly,

While most of the offers have now fizzled out, there's still a great opportunity to grab the Ultimate Ears Megaboom 4 at a reduced price. Normally priced at $199.99, this remaining Prime Day deal has the speaker reduced to $159.99. The deal is available in three colorways: Black, Red, and Blue.

You know what sounds awesome? Amazon is pumping up the volume on deals for Bluetooth and wireless speakers for its Prime Big Deal Days sales event.