James Bongiorno, the engineer behind the Sumo Andromeda, has enjoyed a long and colorful career as an audio amplifier designer. He has cast himself at times as an enfant terrible, exploding at audio critics and running scandalous advertisements (footnote 1). His best-known amplifier is the Ampzilla, produced by Great American Sound, but he also designed the Dyna 400. Currently Jim is living on a boat and serving as part-time consultant to the Sumo Company.
The Fourier 6 has the special ability to generate large coherent sonic fields, from a box small enough to slip into an ordinary shopping bag. At $499/pair, the 6 competes directly with another remarkable-imaging, compact American speaker, the Spica TC-50 ($420/pair).
Harman International’s High-Performance Group’s exhibit featured a live demonstration of its most expensive equipment, including two Revel Rhythm 2 18" subwoofers ($10,000 each); two Revel Ultima2 Salons ($22,000/pair); a Macintosh MacBook Pro running Amarra software driving a Mark Levinson No.502 Sound Processor; a No.52 preamplifier ($30,000); two No.53 Reference monoblock amplifiers ($25,000 each); and Transparent power conditioners for the digital equipment and for the amplifiers. The rack also included a No.512 SACD player. The Revel Ultima2 Salons were crossed over to the subs at 80Hz with 4th-order slopes for both high-pass and low-pass filters. Listening to Diana Krall singing "I Used to Love You," I was struck by how all the loudspeakers and electronics disappeared leaving a holographic image of her voice, with a wide and deep soundstage.
California Audio Technology showed their new 300.2 FD (Fully Differential) solid-state, 300Wpc, amplifier ($8800) that utilizes a bridged output stage. Like Theta Digital, the CAT 300.2 amplifier is another product designed and manufactured by Morris Kessler's ATI company in California.
Valve Amplification Company's Brent F. Meyer (head of technical services) was bullish in his praise of the company's Statement 450 iQ monoblock amp[lifiers ($116,000/pair), shown here on the floor flanking each side of the Critical Mass equipment. The company claims that each tube in this amplifier's output stage is "held precisely at the optimal bias point, regardless of how loudly or softly the music is playing." The VAC iQ circuit also alerts the owner when the tube is growing weak or has failed, making "tube drama a thing of the past." VAC also showed their Statement line preamplifier ($46,000) and Statement phono preamplifier ($50,000), in a system that included Magico S5 loudspeakers ($29,500/pair).