This has three fully regulated DC supply outputs and two AC center tap outputs. It is the assembled version of the XP-720K. Two DC outputs are continuously variable and one is fixed. Both AC outputs are fixed. Specs: Output DC: 1) 1.5VDC - 15VDC @ 1Amp, 2) -1.5VDC to -15VDC, 3) 5VDC @ 3 Amps. Output AC: 1) 6.3VAC @ 1Amp, 2) 12.6VAC @ 1Amp. Input: 110VAC (line cord included). Includes full enclosure and knobs. Features short circuit protection on all supplies. Variable DC outputs can be stacked to get 3-30VDC @ 1Amp.