I am the happy owner of an integrated Balanced Audio Technology VK300X which drives my OB1. Nevertheless, I would like to try active speakers and therefore I am considering selling it. My unit (black and silver) is fitted with the 6922 tube gain stage (it comes with the regular SS gain stage as well) and with the remote. I have the original package and will give more than a dozen of tubes with it (sovtek, EH , Mullard and more). This unit usually goes for more than 5500 £, mine is 6 year old. Waiting for offers, around 1900-2000 £ including p&p, could swap for power amplifier or mono blocks. More info on : [URL="http://www.balanced.com"]www.balanced.com[/URL]