12-tap High-grade 100w Auto Former 100w Max Power Handling Per Channel Freq Resp: 20-20 Khz + and - 1db Removable Input and output Terminal Strip Stereo Control (can Be Used In Mono Applications) Suitable For Residential & Commercial Applications Knob Box & Cover Plate Included 1x 2x 4x & 8x Impedance Multiplier Protects Amplifier By Maintaining Safe Impedance 1x Position Allows Use In Ordinary Applications Easy Access Impedance Switch