This listing is for a lot of 9 preamps that I acquired a few months ago from Stuart Spector's shop in Woodstock NY. The listing includes 5 Spector branded Korean Haz 9v clones that were removed from several Spector NS-2A models. 2 of the preamps are complete, 3 of them are missing either a tone or volume control. The other 4 circuits are what PJ Rubal told me are 'mystery' circuits; they don't remember where these may have came from. I asked a forum member who is somewhat of an expert, and he believes that these are essentially the Mighty Mite MM114 preamps, but with a different layout and circuit board shape. All of the circuits are untested and being sold as-is. The parts from the 'mystery' boards (including tone and volume controls) seem completely compatible with the Spector boards. I thought I would have time to work with these, but it has not worked out that way. First $200 takes the lot, Paypal, shipped to CONUS only.