Allows up to 3 pairs of speakers to be connected (from behind the wall) to a single stereo amplifier. Removable 4-pin screw connectors simplify speaker wiring. Note: To prevent damage to the amplifier, impedance-matching volume controls should be used with each pair of speakers connected to this wall plate. Amplifier Connectors: Gold-plated binding post Speaker Connectors: 4-Pin removable screw terminals Plate Size: Decora-style 2-gang plate Dimensions (WxHxD): 3-3/8 x 4-1/8 x 1-3/8 Inches (86mm x 105mm x 35mm) Size: Fits standard 2-gang J-Box enclosures