I guess this is the right page to post on this incredible kit. Been installed and powered up for two weeks now, and Mikes sales pitch on the website is no lie. Having enjoyed the benefits the 6H23N valves had bought for a few days, I couldn't resist taking it apart and warming up the soldering iron any longer!!! An hour or so later the x-can was back together and warming up......
First impressions were very favourable - a subtle but noticeable improvement right across the board which would have pleased me if it had stayed that way, but over time my reference tracks have taken on a whole new life form and right now as I listen to 'Time Flies' by Porcupine Tree for the first time in 10 days it's an absolute sonic pleasure!! ( Not saying this is anywhere near the best 'hi-fi' track I have, but I knew every nuance intimately before the x-can upgrades). The whole soundstage now feels twice as wide, the bass subharmonics rumble beautifully through the jaw, the acoustic guitars are individually identifiable, and the subtle percussion nuances now fly round the head left, right, and centre. I've also been digging through some old favourites that haven't been played for a while, and some of them to my ears have leapt forwards with almost the same improvements as CD was to cassettes (ahh nostalgia!!! And yes, I do still have a tape deck in the hifi system......)
All in all, if you have a decent source, quality phones and a stock X-can v3, then £100 for NOS valves and the capacitor kit is without doubt the best £ for £ upgrade you could ever wish to make.
Right, I'm off back to my sonic adventure...........!!!!!