Compatible with Sony AV receivers: Sony CMT-EH10, Sony CMT-EH12, Sony CMT-FX300I, Sony CMT-LX20I, Sony HCD-EC70, Sony HCD-EC709IP, Sony HCD-EC77, Sony HCD-EC78P, Sony HCD-EC909IP, Sony HCD-EC99i, Sony HCD-EH10, Sony HCD-FX300I, Sony MHC-EC50, Sony MHC-EC55, Sony MHC-EC609IP, Sony MHC-EC69i, Sony MHC-EC70, Sony MHC-EC709IP, Sony MHC-EC77, Sony MHC-EC78, Sony MHC-EC79I, Sony STR-DH130, Sony MHC-EC909IP, Sony MHC-EC98P, Sony MHC-EC98PI, Sony MHC-EC99I, Sony MHC-GX99, Sony RDH-GTK11. Compatible with Sharp AV receivers: Sharp CD-3400, Sharp CD-C1800, Sharp CD-C1800C, Sharp CD-C2700, Sharp CD-C2700C, Sharp CD-C2800, Sharp CD-C2800C, Sharp CD-C3300, Sharp CD-C3400, Sharp CD-C3400C, Sharp CD-C3700, Sharp CD-C3800, Sharp CD-C3800C, Sharp CD-C401, Sharp CD-C401C, Sharp CD-C406, Sharp CD-C406C, Sharp CD-C420, Sharp CD-C420C, Sharp CD-C422, Sharp CD-C422C, Sharp CD-C452, Sharp CD-C452C, Sharp CD-C460, Sharp CD-C462, Sharp CD-C462C, Sharp CD-C470, Sharp CD-C472, Sharp CMSC640, Sharp CD-E67, Sharp CMSC660, Sharp CPC640, Sharp MDX5, Sharp SC-9730, Sharp XL-505, Sharp XL-S10, Sharp XL-30, Sharp XL-HP500, Sharp CD-BA300. Omni-directional - receive signal from 360 degrees.