I really do like the Havana. I've had it for about two months. Steve actually tipped me off to it after I was ready to throw in the towel with computer audio (tried the Bel Canto DAC3 and owned the DAC1 for about 10 months). I was a bit of a skeptic about his Turbo 3, but it does what it's advertised to do. Pricey though. I didn't spring for the battery, just running it off my Hydra. Yes, it does have the superclock 4. To me it brings the Havana to a level comparable to the Benchmark DAC1 I used to own, so basically all the detail/dynamics of the Benchmark but the benefits of a NOS tube DAC. I didn't care for the DAC1 because of its brightness, but otherwise thought it was a good DAC (dealt with jitter pretty well).