K2Audio KLABXBG2 Gen 2 Bluetooth In Wall Amplifier Kit Including Power Supply
K2Audio KLABXBG2F Gen 2 Bluetooth In Wall Amplifier Kit with front line input
K2Audio KLABXBG2J Gen 2 Bluetooth In Wall Amplifier Kit with rear line input
Keene KLABKITDS In-wall Digital Slave Amplifier including power supply
E-Audio Bluetooth Speaker Kit (Master and Slave) Moisture Resistant (5.25")