$175 for the Niles shipped
$65 for the Adcom shipped
I'm not going to beat myself down on these anymore than this.
You seem to have it priced about right, but not getting much traction. The Adcom seems good value.
Here is a
recent eBay sale and
another.
The Niles looks a nice little amp. No past sales I can find on eBay, but one at $99 now. These units sell for $475 to $525 new in box, $419 open box, so I would say you are giving value.
That Niles seems to have a cascaded triple output stage, which gives very linear current gain, and usually reliability. The Quad 303 introduced in 1967 used that
configuration. That is probably the most bullet proof amp design in the history of audio.
Here is a
recent review and the telling of the tale, of the introduction of the first solid state amp that was as good as tubes.
May be this will get some buzz going for you!
