In the D'Agostino exhibit, pure AC power was fed to the Progressive monoblocks by a Stromtank independent power source ($30,000): a 276-lb enclosure in which a 16-cell Lithium phosphate battery pack stores up to 4000W, ultimately to be converted to pure-sinewave AC.

During visits to the suite, I also heard Jake Shimabukuro's ukulele playing, which was outstanding, and then a recording of his performance played back over the Nagra HD monoblocks…

Mark Levinson's engineers partnered with VPI's Mat Weisfeld (seen above) to develop the Mark Levinson No.515 turntable. The platter is belt-driven and the speed-control electronics are housed in a metal case under the 'table…

Rated at 500W into 8 ohms, the Progressions function as a voltage source, doubling the power with each decrease in load impedance, resulting in 1000W RMS into 4 ohms and 2000W RMS into 2 ohms…

Last year I liked these HRT (High Resolution Technologies) Stage loudspeakers ($500/pair, plus $800 for companion Sound Anchor stands), and this year I love them…

Amplification is usually just a green circuit board in a metal box. (Yawn, snooze.) Even at the highest prices, you still get green boards—but now those green boards are hiding their greenness in very expensive boxes…

The NAD room was populated by a lot of tall men in suits—all of whom seemed dedicated to preserving and enhancing NAD's tradition of offering exceptionally high-value amplification, à la the legendary NAD 3020 integrated amp…

Wireworld introduced two new cables at CES: its Helicon 16 speaker cables (available in two versions), and Category 8 Ethernet cables (three models)…

It's safe to say our experiment bringing Jake Shimabukuro to CES this year as a live music reference worked out pretty well. Response was overwhelmingly positive and we're sifting through the comments and will start filing reports on each of the seven rooms we visited over the next week or so.

NAD's new music server and network player features WiFi and ethernet networking, 2 USB inputs, Bluetooth AptX along with a CD slot on the front for either ripping or simply playing a disc. Inside are two 2TB hard drives--one for storing music and the other for automatic backup in case the first one fails. There is no DAC inside, so outputs include SPDIF, AES/EBU and optical along with HDMI.

But where things get interesting...