What is a good NOS DAC in the $200.00 range? I know I saw at least one. Pre-owned is fine.
What does NOS mean?

Pre-owned is not NOS (New - Old Stock).

NOS DAC means non- oversampling,
Non-oversampling is what I believe is being referred to as "NOS."
I believe NOS in this case refers to non-oversampling.
for DACs it means Not Over Sampling

in other words it samples CDs at 16 bits 44.1KHz and not some higher numbers

take a look at Scott Nixon or Wavelength DACs for more info
what the hell is wrong with this website? I look at a thread that says it has multiple responses but when I open it up there are less. Then I post a response and go back and there are bunch that weren't there a few seconds ago.

Could this be my browser?
I noticed the same thing. It started yesterday.
It started a week ago for me.Have NO idea why.....
Herman, Neil,

It is not your browser. A-GoN has been experiencing this problem for about a week. It is very annoying.

You can click on the "threads" link that follows the poster's user name, then click on the pertinent thread. The repsonses will be up to date there.
Back to the subject at hand :-)

I've recently seen several of the original (series 1.x) Ack dAcks here on Audiogon for around $200. This is a good buy, IMO. I had both the l.2 and the 2.0 models and subsequently went to a one-box CDP (Raysonic CD 128), but the Ack dAcks were no slouches. Dave
Get an Ack! dac and upgrade the output cap and you will be amazed.
I have a Moodlab DICE, not quite $20, but perhaps you can find a used one