The 6SL7…
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Here's how Fi's simplest amplifier works: The input impedance is set with a 250k ohm resistor, and the input signal travels from the input jack—Garber generally prefers the nice rhodium-plated phono jacks from Kimber Kable—to the signal grid of half of a 6SL7, a high-transconductance dual-triode tube with a common heater. The voltage-amplified signal is coupled, through a 0.1µF capacitor, to the signal grid of half of the 421A dual-triode; the anode of that tube half is connected to the primary (2.5k ohms impedance) of a Magnequest DS-025 output transformer. And there you are.
Unlike the mass-market consumer electronics exhibitors, which started their press conference onslaught over the weekend and Monday, the audiophile exhibitors like to maintain a sane CES schedule.
And so for us lucky enough to cover performance audio, the show starts today, Tuesday. And with a full moon setting over the desert no less. Posts should start dribbling in today, and kick into full gear by this weekend.
In a scene reminiscent of Disneyland, the DISH Network mascot did his best to keep the crowd amused.
This photo should give you an idea of what it was like once inside. And, yes, camera fans, that's a Canon DSLR with what looks like a big L-series lens, being held up above the crowd. Which brings up another point about why there were more people at this year's CES Unveiled: this year, PMA, the photoimaging manufacturers' association, has joined CES—they call it PMA@CES—so in addition to the consumer electronics press there are also the photo equipment journalists.
The first major press event at CES, scheduled to start at 4 pm on the day before the Press Day, is something called CES Unveiled, described as "a pre-show look at who will be making news headlines before the show officially opens...catch all the latest products in one room." This description is a bit...well...exaggerated. The exhibitors are mostly small companies, with no representation from heavy hitters like Sony, Panasonic, Sharp, etc. The high-performance audio companies also pass on it.
However, CES Unveiled certainly attracts a lot of press attendees, which may be because (a) there'…
The 2012 Best of Innovations award in the High Performance Home Audio category went to the Devialet D-Premier DAC/preamp/amp. It also got the award for Most Difficult to Photograph Audio Product. Note the reflection of my badge, intended to show that this is not just a manufacturer-provided photograph. Devialet is distributed in North America by Audio Plus Services and Stereophile has just received a sample for review.
The Best of Innovations winner in the Headphones category was the Sonomax eers ™ earphones, described as "the world's only custom-fitted earphones that can be fitted in 4 minutes, [offering] incomparable sound isolation, fidelity and comfort."
With the speakers removed, you can see the inductive bases on the dock.
Everybody wants to get into the act. Pro Audio manufacturer Behringer had several iPod/iPhone audio accessories, including the nifty Soundscape Air ($129), which features wireless speakers (good for up to 8 hours of playing, up to 150 feet from the base unit) that utilize inductive (ie, wireless) charging.
After encountering booths of so many manufacturers I had never heard of, I got some comfort from seeing a familiar name from the world of audio: Velodyne. Well known for their subwoofers, Velodyne has entered the highly competitive earphone market. Their new $90 Vpulse's claim to fame is—you guessed it—exceptionally powerful bass performance. Velodyne's David Short was most enthusiastic about it, and told me that although Velodyne is not about to go out of the subwoofer business, they're working on a wide range of headphones.