“Biggest. Tube. Ever.” I said, in my best Comicbook Guy voice. The Kronzilla DX Mk.II ($32,000/pair) from KR audio of the Czech Republic uses two T1610 output tubes in parallel to achieve 100Wpc of triode power. The amp also uses zero negative feedback.
The Stello Ai500 integrated amplifier was shown in the April Music room. A 150Wpc integrated with a built-in high resolution DAC, the Ai500 sells for $3500 and ably drove power-hungry Magnepan speakers.
Sonneteer, a UK audio company, was showing off its new Morpheus Music Center ($4000), an integrated amplifier, DAC, and control center for streaming audio. The amplifier section is rated at 50Wpc and will stream music via WiFi or Ethernet, play Internet radio, and USB input. The Morpheus also has three analog inputs and one analog output so it can send signal to an external power amplifier or subwoofer. Standing by his creation is Sonneteer’s Haider Bahrani.
Ayre showed off their new VX-R stereo amplifier, a stereo version of their lauded MX-R monoblocks. Rated at 200Wpc into 8 ohms the VX-R is priced at $14,950. The amp is a zero-feedback design, featuring fully balanced discrete circuitry. As usual from Ayre, the chassis is beautifully made of milled aluminum. The sound of the VX-R, driving the TAD Compact Reference monitors was wonderful.
Like the Marten room, the Engström & Engström room also played the new large Coltrane 2 speakers by Marten of Sweden. This year, the Coltrane 2 speakers met The Lars Type 2 monoblock amplifiers ($60,000/pair), which each use two 300B tubes and deliver 36Wpc.
“Go check out the Constellation Audio room,” said Jon Iverson. So I did. As I entered the room filled with unworldly looking gear I spied Michael Fremer, engrossed in one of his famous mix CDs, burned from his vast vinyl collection. Michael, ever the gentleman, relinquished the sweet spot to me and both of us took in some big, clean, transparent sound. Driving a pair of $150,000 Tidal speakers was Constellation’s Hercules amplifiers ($70,000 each), which are each able to put out a kilowatt of juice into 8 ohms and runs its first 250W in class-A.
The visual design of the amps is both striking and understated, clad in an all aluminum chassis. Each side of the amp has a diffuser grid which hides the amp’s heatsinks and allows for a chimney action to help cool the amplifier. All that aluminum also serves the purpose of mass-loading the amps to control vibration. Internally the amps mechanically float the sensitive signal carrying parts. That attention to vibration damping could be heard as stillness and ease, particularly when I played a high-resolution file of Robert Silverman playing the final fugue from Brahms’ Variations on a Theme by Handel. My time in the Constellation room was stellar.
Also on display was Bel Canto’s new headphone amplifier (shown right), a product so new it doesn’t yet have a proper model number or name. Bel Canto’s John Stronczer let me take a listen to the amp through a pair of in-ear headphones. The sound was lovely, but I couldn’t really get the cans to stay in my ears (I must have very large ear canals).
When I checked out the back of the headphone amp I noticed that it was in the signal path of the room’s big rig. The DAC3.5VBS’s outputs went into the headphone amp and the outputs of the headphone amp went to the rig’s amplifiers. I asked John, “What gives?” He told me that he has been experimenting with using the new headphone amplifier as a unity gain buffer, taking advantage of the headphone amp’s ultra-low output impedance. John said that he hears improvements in the system using this configuration and that Bel Canto is exploring new applications for this technique. No price has yet been set for this headphone amplifier.
I was simply delighted by this clock’s slight cheekiness and subtle beauty. Seeing it also served as a reminder of how iconic the McIntosh faceplate has become in American audio. No price determined for this timepiece.
Aotearoa. The Land of the Long White Cloud. New Zealand. The home of the Maori, Kiwi birds, an upcoming shoot for Peter Jackson’s film The Hobbit, and Plinius Audio. On display in the Plinius room was the Hiato integrated amplifier ($9100). The Hiato is a 300Wpc integrated, able to kick out peaks of 50A of current. The amp is a high-biased class-A/B design that allows the first few important watts to benefit from class-A purity and then switch over A/B for greater efficiency and maximum power. The Hiato had me grooving to Stevie Wonder’s “Boogie on, Reggae Woman” and stopped me in my tracks playing a live duet version of Johnny Cash singing “Don’t Take You Guns to Town” with none other than Willy Nelson. The Hiato can also be installed with an optional phono preamp which brings the price up to $11,000.
Prima Luna’s Kevin Deal was showing off the new Prologue Premier monoblocks ($4399/pair). These 70Wpc tube amps contain two output transformers per amp and have two, four and eight ohm taps. The amps also feature a bad tube indicator and relay-based protection which, according to Deal, will offer bullet-proof protection for just about anything that could happen to the amplifier. As in all Prima Luna designs, the Prologue Premier auto biases the tubes and is capable of running any number of different output tubes.