It's funny. There are four pages on this preamp thread, listing all makes and models of preamps. Yet as soon as someone mentions a NAD product, there is always someone quick to put it down. No-one mentioned the bad glue in Sansui preamps, or the dry joints on the power supply transistors in Yamaha preamps? Why is this? Is there some sort of bias against NAD equipment because it's not make in 'Merica? Last time I looked, they used to list their location as Boston/London, and had their stuff manufactured in the Far East (Japan, Taiwan, and China).
The thread title says "best vintage preamp", not "best vintage preamp over $1000" or "best vintage preamp under $300". So there are bound to be a few pieces costing more than the next one. I provided four links to people that have had good results with this little preamp, I could list many more. There's even a listing right now (early December, 2015 for archive sake) on eBay for a 3020 that references the work I've been doing on these, surely that's no co-incidence?
Maybe it has a bleed-through problem? I personally on have one source turned on at a time, if I'm listening to CDs, I turn the CD player on. Not sure what the advantage is of having everything turned on at once. I'm not even certain comparing a new 1020 against a C4 is apples to apples, since they didn't use the best quality components anyway. But a few dollars worth of capacitor upgrades take the sound to a much higher level.
It's also strange that the "audiophile sphincterati" go crazy over passive preamps, paying silly money for a potentiometer in a box. The 1020 has the most basic of circuitry, for the line stage your precious signal only goes through four transistors, for phono, only another eight more. Contrast this to some other units, full of op-amps and multiple transistor stages. Sure, a well designed but complicated circuit can sound better than a badly designed simple circuit, but reviews have proven time and again that isn't the case.
Your opinion is just that, your opinion. We all know the old saying about opinions being like.... well, you know the rest. My opinion is McIntosh are overpriced and overrated.
Enough said, no more,
Lee.