Acoustic Audio AA152UB Powered 15" Bluetooth Speaker Pair 1800 Watts USB MP3 Players AA152UB-PR Acoustic Audio AA152UB active 15" Bluetooth USB MP3 speakers, power rating per speaker is 900 watts system power, frequency response is 25Hz-20 kHz, efficiency is 101dB, 8ohm, 2-way design and functionality Deluxe 15" woofers with 2" tweeters, built in Bluetooth receiver per speaker, built in USB/SD card reader MP3 player per speaker, ported for added bass response, female XLR or 1/4" jack input for wired mic with level control per speaker 3.5mm female XLR or RCA jack inputs for line level device with level control per speaker, male XLR line level output per speaker to daisy chain to another powered speaker, high EQ, low EQ, MP3 and master controls per speaker Power and clip indicator lights per speaker, rugged cabinets with rear wheels and handles, adjustable pole mounts for speaker stands, each speaker size (H x W x D) is 27" x 16" x 14", designed and engineered in the USA, power cables and full instructions included Use for professional DJ speaker, public announcement speaker, karaoke speaker, live sound speaker, fixed installation speaker, studio monitor, home audio, this listing and price is for 2 Acoustic Audio active speakers