ARC LS25 vs. LS16 MKII

Anyone compared the ARC LS25 to the LS16 MKII? Do they use the same power supply? TIA.
Similar, but not the same. The 25 has better regulation of the line voltage, is quieter, and offers seletable output gain. Its just more pre amp overall.
If you're comparing the LS 25 mk1 vs the LS 16 mk2 then you should be more concerned with the types of tubes and sonic presentation than the power supply, as the mk2's sound completely different than the mk1's.
much better soundstage on the 25mkII. i auditioned both and bought the 25
If you can handle balanced inputs the LS 5 is in a totally different league