Robert Deutsch

Based in Calgary, Alberta, Grant Fidelity is the North American distributor of a range of Chinese-made audio electronics, under various brand names.

I think it was at least a couple of years ago that I first heard that Atlantic Technology—a speaker manufacturer that I associate more with value-for-money than cutting-edge products—was working on a patent-pending technology that combines reflex, acoustic suspension, inverse horn, and transmission line approaches to bass loading. Dubbed Hybrid Pressure Acceleration System (H-PAS), this is said to combine the best aspects of each approach, with deep bass extension, good system sensitivity, and reasonable enclosure size.

Well, the patent has been granted, and the floor-standing AT-1 ($2500/pair) is the first speaker to utilize the H-PAS approach. (According to Atlantic’s Peter Tribeman, they have licenzed H-PAS to five other companies—which he understandably declined to name.)

Having listened at CES to a pair of AT-1s, in a system that included top-of-the line Halo by Parasound electronics, I’m convinced that they’re on to something with this technology. The AT-1 is a modestly-sized floorstander, with two 5¼” woofer/midrange drivers, and yet it generated bass of such extension, power, and control that left me and others who attended the demo shaking their heads in disbelief. The sound was otherwise fine, too: tonally well-balanced (the bass was there only when it was on the recording), and a precisely-defined soundstage. Most impressive.

What's in a name? One of my favorite Rodrigues cartoons (footnote 1) shows a meeting of a loudspeaker manufacturer's marketing people, trying to come up with a name for the company's latest product:

Herman van den Dungen and Marcel Croese, the duo responsible for the Prima Luna line of tube electronics, have introduced a new line of "Good Looking and Good Sounding" solid-state equipment under the HeDo moniker. As with the Prima Luna gear, the prices are very reasonable: $1395 for the HeDo One 80Wpc integrated amplifier, $1795 for the HeDo Two $200Wpc integrated, $1245 for the HeDo Three preamp, and $1495 for the HeDo Four power amp (the power is not listed on the preliminary literature sheet; I assume it's 200Wpc or a bit more). The four components are pictured here in distributor Kevin Deal's room at the Venetian. The frog is an optional extra.