The McIntosh HP is really impressive. So much so, I bought the review unit. Lehmann Audio Linear USB still holds its own today on the amp side. The Burr-Brown DAC is good sounding, but not up to par with today's offerings.
Today, I'm rockin' the new Simaudio Moon Neo 230HAD + Sony MDR-Z7 with Nordost Blue Heaven cable upgrade. This $599 retail hp is exceptional with a cable upgrade. The stock cable is junk.