The XPA-1L is a fully balanced, fully discrete, differential design with ahigh current, short signal path, selectable Class A/AB Monoblock Amplifier. The XPA-1L will put out in Class AB mode 250 watts into 8 ohms and 500 watts into 4 ohms. In addition to the rated power output, XPA-1L has ability to run in pure Class A mode for the first 35 watts. They have both Balanced and Unbalanced inputs.

These amplifiers are in excellent condition (still have the protective plastic on the displays) with boxes and cables.

There is a pair on Ebay for $900, get these for much less, asking $650 obo for the pair.