Just purchased a Pioneer SX-1980 on ebay in Europe. Important as that's where it's going to be used and transport costs are killer on this thing + what sours the deal on most US-purchased equipment are the import duties and the VAT. I'll have to get myself a voltage step-down transformer though as the unit works on 120 VAC, the original owner who brought it to Europe was in the US military.
To be honest it's a big gamble. Totally out of my depth here and I'm relying rather heavily on the opinions of Skylab and a couple of others who are very happy with it driving the HE-6 via the headphone out.
It's superb with the HE-6. I once had the SX-1280 driving the HE-6 out of the headphone jack and boy, does it give music through the 6 a very muscular body ! You will not regret it.