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Just nine days after Independence Day, the third annual Capital Audiofest unfurls its banner with the hope of life, liberty, and good sound for all. Scheduled for July 13–15 in the three-story Crowne Plaza Hotel in Rockville, MD, the show promises up to 40 exhibit rooms stocked with enough high-quality equipment to send Paul Revere galloping from port to post declaring, "The Audiophiles Are Coming!"

For a one-man effort that began with 14 or 15 rooms in a Rockville mansion, the Capital Audiofest has grown considerably in its short existence. An idea birthed at a party—a group of well-lubricated audiophiles, meeting for their annual post-CES bash at the home of Ijaz Kahn, sat around lamenting that there hadn't been an audio show in DC since the 1980s, and when they had finally sobered up, exactly one, Gary Gill, pictured above at last year's Show, found himself committed to following through–the Capital Audiofest has expanded into a major show that will draw upwards of 1500 eager attendees from as far as Canada, Florida, and the Midwest.

I thought I'd review the procedure I typically use to seek out affordable speakers for review as, in the case of the Denmark-designed DALI Zensor, made in the company's facility in China, there was a twist at the end.

In preparing to review affordable loudspeakers, I typically put together a list of potential candidates I've discovered at audio shows, or that have been recommended to me by other Stereophile writers. I add to that list products I've learned about from press promotions, usually from companies whose products have impressed me in the past. I boil this down to a short list, then run it by Stephen Mejias to make sure I'm not tripping over The Kid's own quest for budget sonic nirvana.

Who wants only a digital-to-analog converter when you can have a DAC with benefits? How about if those benefits also come with some high-resolution attitude?

That's what I pondered while setting up the NAD M51 ($2000). Sure, it's a basic DAC, but it also has extras—like HDMI inputs, remote-controlled volume, a polarity switch, and one of my favorite features on any DAC: a display that tells you which sampling rate the thing is locked to.

For a manufacturer to squeeze money from the stone that is my CD-player budget, his products would have to be both exceptional and affordable. And as long as I'm reporting from Fantasyland, I'll ask that they also be obsolescence-proof.

One of the real coups of Holger Peterson’s Stony Plain Records which is the subject of my Aural Robert column in the July issue of Stereophile was signing the great Canadian blues guitar player Jeff Healy to a deal late in Healy’s too short life to make both blues and jazz albums.

The phenomenon of the "singing flame" has been known since the 19th century. Place electrodes either side of a flame and, if you apply a high enough audio-modulated voltage to those electrodes, the ionized particles in the flame will cause it to emit sound. (Search YouTube for "singing flame" and you'll find many examples.) This principle was developed into a practical loudspeaker in 1946 by a French inventor, Siegfried Klein, who confined an RF-modulated arc to a small quartz tube, coupled it to a horn, and called the resulting speaker the Ionophone. An intense radio-frequency electrical field ionizes the air between inner and outer electrodes to produce a distinctive, violet-tinged yellow flame in the quartz combustion chamber. When the RF field is modulated by the audio signal, this causes the almost massless ionized flame to expand and contract in what should be a perfectly pistonic manner.

It's always good to have a reference. No matter the endeavor, references help guide us and set standards for all we do. For many hours of every day, I'm lucky to enjoy the reference of live, unamplified music. Right now, I average over 20 hours a week of rehearsals and performances of various ensembles, and four to five hours of listening to recorded music on my hi-fi. Clearly, for me, my musical reference is not the sound of my audio system, but the sound of live music created in various venues and acoustics.