d features electronics variable pitch control

Audio-Technica AT-SP3X Powered Bookshelf Speakers - Pair (White)

Altec Lansing HydraMini 2.0 – Miami Dolphins, Wireless Magnetic Bluetooth Speaker

SOAR Collegiate ShockBox XL LED Wireless Bluetooth Speaker- Illinois Fighting Illini

Skullcandy Terrain XL 2 Wireless Bluetooth Speaker, IPX7 Water Resistant, 18H Battery, Multi-Link, LED Light Show, Portable, Tan

Powered Bookshelf Speakers with Bluetooth, 25W x 2 Active Studio Monitor & Computer Speakers, 5.25 in Woofer, RCA/USB

TOPTECH STAR-8 Bluetooth Party Speaker, 8" Woofer, Flame Lights, Karaoke

Nautica Urban SP600 True Wireless Outdoor Speaker, Portable IP5 Splash-Proof Bluetooth Speaker, Perfect for Camping, Beach, Backyard & Travel

Dolphin® Audio Soundbyte 20 Waterproof Portable Bluetooth® Party Speaker with Sound-Activated Lights

Skullcandy Terrain Mini 2 Wireless Bluetooth Speaker, IPX7 Water Resistant, 14H Battery, Multi-Link, LED Light Show, Portable, Red

Supersonic SC-1074ER Solar Powered Emergency Audio System with Integrated Flashlight Radio and Rechargeable Battery for Off Grid Utility

Samson MediaOne M30BT 3-Inch Powered Bluetooth Studio 20W Monitors (Pair, Black)

eKids Spiderman Bluetooth Speaker, Portable and Rechargeable Wireless Speaker (Vi-B76SM)

RadioShack Portable Outdoor Speaker 9W In Traditional Rugged Style Black and FM Radio and TWS For Pairing Blue

Sony 2-Channel Stereo Receiver with Bookshelf Speaker (Pair, Black) Bundle

Dolphin Audio RETROBOX™ Portable Mini Bluetooth® Speaker

Link Syncwave LED Wireless Synchronized Portable Speakers Immersive Sound 360° HD Sound Great For Bedroom Dorm Pool BBQs Beach Picnics & More- 2 Pack

Altec Lansing HydraMini 2.0 – Dallas Cowboys, Wireless Magnetic Bluetooth Speaker

Pyle Wireless Active PA Speaker System - Black

Ultimate Ears WONDERBOOM 2 Radical Red Bluetooth Speaker Bundle

Universal Audio VOLT-276 USB Audio Interface

Worryfree Gadgets Wireless Bluetooth Speaker with Carry Handle