I have to laugh. I found my old Phase Linear 2000 preamp I purchased when I was in college for $236. I saw the prices on eBay and said why no sell it, but I had to test it first. Plugged it i and laughed at how good it sounded versus what we build. I just to the top off to clone the dam thing - no tone controls or push button, etc, just volume and balance controls point to point wired with Audio Note resistors - I'll have to see what that can do. I may be selling them commercially next year if all goes well!
Happy Listening.
Happy Listening.