Pros: Dynamic, aggressive sound
Cons: 24/96 optical input only, poor with IEMs, overheats when horizontal, newer model has poor gain
Having owned the $100 NuForce uDAC1 for over two years, I felt it was about time to upgrade. It had been acceptable, but I could still notice a bit of a veil in the midrange. The itch was also caused by going to a Head-Fi meet. When I plugged the uDAC1 into some high-end amplifiers, I realized how limiting it actually was. What does the HDP get you? Not much.
I had a good review on the HDP before, but I can no longer recommend it. The HDP, being a $500 product, has worse gain than their $100 uDAC1. It can barely amplify a Grado. I have posted on Head-Fi about this and NuForce has assured me that this is normal. That is complete bee-ess. My first unit had hissing when turned on. This second unit, sent directly from NuForce after I paid an extra $100 service fee, still has hissing beyond 3 o-clock, and the gain is worse than the first unit!