Just found the Havana dac seller's comment (I forget who it was!)

"This very unit convinced me to sell my Esoteric X-03se SACD/CD player. After the upgrades were installed the Havana thrashed the X-03 almost everywhere, with a noticeably more colourful mid and gorgeous top end. The one area that the '03 bettered it was in the bass depth and speed - but not by much (and we're talking about one of the best cd players in it's price range at £6000 here!)

This unique DAC was very extensively upgraded last year by our very own Earl of Sodbury at Wychwood Audionics - with higher spec (lower distortion) DAC chips, Mundorf Supreme caps, power supply upgrades, higher value caps and resistors throughout. I have also fitted a very rare 1950s JW Western Electric 2C51 valve - these alone fetch £40-50 on E-Bay. The valve sounds far nicer than the GE 5670 supplied by MHDT.

The standard Havana is already a highly-reviewed unit - the upgrades have brought superior clarity/insight, superb tonal colour. more detail and noticeably deeper/controlled bass. In fact i've never heard any NOS DAC that does bass like the Havana."

Like Jerry, I've had my speakers for 10 years now. Ocellia Calliope .21 Grandis Signatures, for those who don't know.Lovely organic sound.