The IT-A25-M70 Mono Amp provides either a 4-8 ohm speaker output or a 70V line output at 25W RMS. The IT-A25 Stereo Amp delivers a 25W/CH output at 8 ohms and can be bridged to drive a 4ohm load at 50 watts. The units include surface mounting brackets, self adhesive rubber feet and hardware. Optional rack mounting kits are also available.