Walmart offers the Britelite iRocker Multi-Function Powered Loud Speaker for $69.96. Opt for in-store pickup to cut that to $68.28. That's the lowest price we could find by $20, although we saw it for $3 less in March. It features a 1,500-watt peak output, 15" woofer, 1" active tweeter, Bluetooth, FM radio, 3.5mm auxiliary input, USB, and SD card slot.