Velleman 8020 Pre Amp that's been updated with the info gained on this page ...
http://www.hardwareanalysis.com/content/article/1826/
See the Schematic links for the changes made.
I believe this disconnects the +6db gain option but it doesn't need it anyway as it has plenty.
I bought it after I sold my Promitheus TVC passive pre and it made an immediate difference for the better, more dynamic, more impact but still has clarity and detail too.
For the money it's a great little pre amp, and you can try different valves of course, I have Seimens Mica 3's in it at the moment, but it will be supplied with the Valvo valves that it came to me with. ( I'm keeping the Siemens )
A few little marks on it but nothing too noticeable in use, there is a little mark on the top edge of the fascia but only seen if you look closely.
£225 including postage within the UK.