When Jason Victor Serinus visited the Bluebird Audio room on the Venetian's 35th floor, he mentioned that Chord was demonstrating its Blu Mk.2 CD transport ($11,788) along with the Dave DAC that I reviewed and was impressed by last June. I chatted with Chord's digital guru Robert Watts (above in photo) about the new transport and he mentioned that it incorporated his latest WTA (Watts Transient Aligned) digital filter with a million taps! (The more taps there are, the closer a DAC can reproduce the timing information in the reconstructed analog signalsee my DAVE review for why Robert feels why this should be so.) I was puzzled, as a digital reconstruction filter belongs in a DAC, not a transport.
Some manufacturers weren't exhibiting at CES but did have suites elsewhere in the Venetian hotel. One such was Audio Research, who was showing the first amplifier to be designed following the passing of the company's long-time Senior Design Engineer, Ward Fiebiger, who died of a heart attack last March. The Ref160M monoblock offers around 150W into 8 ohms and will cost in the region of $30,000/pair.
If there is one thing that raises the hackles of engineers, it is audiophiles' insistence that power cords affect sound quality. But at CES, AudioQuest's Garth Powell (right in photo, with AQ's Alex Brinkmann) was showing how changing just one cable in a system, the one connecting a Simaudio Moon CD player to a Niagara 700 power conditioner, could make or break the system's sound quality. Playing a track from Muddy Waters' Folk Singer, with Moon amplification and Magico S1 Mk.2 speakers, and without changing the volume, Garth compared AudioQuest's new Thunder cable ($700) with AC cables from other companies priced up to $18,000, culminating with the AudioQuest Dragon ($4000).
An economy of information transmitted . . . what was encoded was only what was needed, nothing more. (footnote 1)
As I wrote in the January issue's "As We See It," Master Quality Authenticated (MQA), the encoding/decoding system developed by J. Robert (Bob) Stuart and Peter Craven, has been widely criticized, despite reports in this magazine and others that MQA-encoded files tend to sound better than the PCM originals from which they were derived. Also in last month's issue, Jim Austin investigated the time-domain performance of the MQA reconstruction filter and I examined some of the more general aspects, ending with: "Other criticisms of MQA involve its implications for the recording industry, for manufacturers of audio products, and for consumers. I will examine those in next month's 'As We See It.'"
Back in January 2010, in Las Vegas for the Consumer Electronics Show, I was prowling the corridors of the Venetian Hotel when I bumped into loudspeaker auteur Sandy Gross, cofounder first of Polk Audio and then of Definitive Technology. Knowing that Gross was no longer associated with Definitive, I asked him what he was getting up to in his retirement.
Retirement? He showed me a photo of a plain, cloth-covered, black tower speaker and promised to keep in touch. When next I heard from him, it was to announce that, along with his wife, Anne Conaway, and his former partner at DefTech, Don Givogue, he had started a new loudspeaker company, GoldenEar Technology, Inc., and that the plain black loudspeaker was the first in a line of models to be named Triton.
"The fundamental problem of communication is that of reproducing at one point either exactly or approximately a message selected at another point."Claude Shannon
Since its announcement at the end of 2014, Master Quality Authenticated, the MQA encoding/decoding system, has spawned outspoken criticism. Some of the more thoughtful negative reactions have come from engineers such as Dan Lavry, Bruno Putzeys, and Daniel Weiss. Others have been expressed by manufacturers of digital products: the late Charley Hansen at Ayre Acoustics, for example, along with Jason Stoddard and Mike Moffat at Schiit Audio, John Siau at Benchmark Media Systems, and Jim Collinson at Linn Products. Some have been audio writers: Doug Schneider, at SoundStage!, and Paul Miller and Jim Lesurf, at Hi-Fi News. Most vociferous have been anonymous website posters. As Jim Austin remarks in his examination of MQA's decoding of impulse-response data elsewhere in this issue, "the nastiness online is unprecedented."
On Wednesday, November 29, I received the following announcement from Ayre's Brent Hefley: "With heavy hearts, we regret to inform you that Charles Hansen, founder of Ayre Acoustics, has passed away on November 28th, 2017. Those who knew Charley knew that he was a passionate man who always stood up for what he believed to be right. His family knew him as a loving and dedicated father of his two children. With the passing of Charley, the world has lost one of the most creative and innovative minds in the audio industry and we have lost a good friend."
Back in May 2014, I reviewed NAD's Masters Series M50 Digital Music Player ($2499) and M52 Digital Music Vault ($1999 with 2TB storage). At the 2017 Consumer Electronics Show, NAD announced the M50.2, which is almost identical to the original M50 but now incorporates two 2TB hard disks, arranged as a 2TB RAID array, to ensure data integrity, and adds TosLink and coaxial digital inputs, Bluetooth with aptX for streaming music from a smartphone or tablet, and two single-ended analog inputsall for $3999, or $499 less than the combined cost of the two earlier products. Like the M50, the M50.2 offers WiFi and Ethernet connectivity, and has a CD drive, accessible via a slot on the front panel under the color TFT touchscreen, that can be used to play CDs, or rip them as FLAC, WAV, or high-bit-rate MP3 files.
Headphone listening has always been an important part of my audiophile life. In recent years I've been using at home Audeze's large, open-back, circumaural LCD-X headphones, which I bought after reviewing them for the March 2014 issue; and a pair of small Ultimate Ears 18 Pro in-ear monitors, which provide much better isolation on my subway commute to Stereophile's offices in Manhattan. I was intrigued by Audeze's iSine in-ear models, which were introduced in November 2016 and are unique in using planar-magnetic drive-units mounted outside the ear. I thought about reviewing a pair of the affordable iSines, but before I could get around to it, I heard that Audeze was to launch a cost-no-object version, the LCDi4, priced at a substantial $2495/pair. Aspiration got the better of frugality, and I asked for a pair to review.
Of all the speakers I have most enjoyed in recent years, two were from British manufacturer KEF: the LS50 Anniversary Model ($1500/pair), which I reviewed in December 2012; and the Blade Two ($25,000/pair), which I reviewed in June 2015. Though these two speakers lie at opposite ends of the price scale, they have in common KEF's unique Uni-Q drive-unit, in which the tweeter is mounted on the front of the midrange unit's pole piece, so that the lower-frequency cone acts as a waveguide for the higher-frequency output.