Kalman Rubinson

The NHT Xd DSP powered speaker demo was held at the Plaza Hotel in New York City last week and representatives from NHT and its supporting cast, DEQX and PowerPhysics, opened by explaining the philosophy behind the new product and the essential components they each contributed (also see previous).

For a couple of years, I have been following Prague-based Okto Research. At first, Pavel Krasensky, the founder and hardware developer, offered audio design ideas and DIY modules that I found tantalizing. For example, there was a dandy-looking ESS 9038Pro Sabre–based output module and some appealing power supply modules—but to use those, the buyer had to manage inputs and integration on their own.

Then, finally, last year, Krasensky released the dac8 PRO, an 8-channel D/A processor with USB input and output, 8 channels of AES/EBU input, and 8 channels of balanced (XLR) analog output as well as a headphone output.

I have reviewed and owned so many Paradigm speakers that they feel almost like members of the family. I've owned the v.2 and v.3 versions of the Reference Studio 60, and reviewed the v.3 version in Stereophile (in December 2004, Vol.27 No.12). My long and intimate relationship with this speaker is founded on the best of reasons: We are extremely compatible. The Studio 60, in all its incarnations, is large enough to be used as a full-range speaker with nearly any program material, and yet is compact enough to be easily accommodated in my relatively small Connecticut listening room. It neither looms over me nor disappears into the space. Used as a center-channel speaker, it's just short enough to clear my line of sight to the video display. Finally, and despite inevitable price creep over the last decade, the Studio 60 still comes in under $2000/pair—my line in the sand for a reasonably priced system.

The components I needed to choose for my first system were never in doubt: a turntable or record changer, an integrated amplifier, and a speaker. One of each, please, in those mono days.

Today, even in stereo, that trinity would be regarded as rather traditional—or, if you prefer, purist. Digital has exploded the range of source options and loudspeaker options. Yet amplifiers have not changed much in how and what they do.