Brought these new last year from RapalloAV for WFH, so in excellent condition, but have since upgraded (more like side-graded TBH), so no longer needed.

Sounds fantastic with my HD6xxs, you would have to spend a lot more money before you would get better performance than these.  The E30 has a remote that can be used to control gain, but I have just always had it in DAC mode. The L30 can also be used as a pre-amp too.

The L30 is actually brand new, as it is a replacement unit as part of a recall. Both supplied in original boxes, remote, cables, manuals etc. Can chuck in some short RCA cables and you are good to go.

$225 each or $430 for both + shipping