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![](\"\/images\/042822-Mojo-600.jpg\")
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Upstate New York manufacturer Alta Audio debuted its new The Adam floorstanding speaker ($17,000\/pair in piano black, $18,000\/pair in rosewood or beech) at Axpona, in two separate rooms.
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\nThe Adam features a 5.75″ neodymium magnet ribbon tweeter, 6″ midrange driver, and an 8.75″ woofer “whose tuning parameters are coupled to the unique cabinet design for its infrasonic (floor-moving) bass and for refined cohesion between The Adam’s XTL (Extended Line Transmission) and its pure aluminum ribbon tweeter,” stated the company’s website. That’s potentially copious bass created from a transmission-line approach.
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\nThe unusually curved Alto Audio speaker stands 41″ H; it’s 15″ by 18″ at bottom, and 8½” by 14″ at top. Stated frequency range is 20Hz–47kHz, sensitivity rated at 91.5dB\/2.83V\/1m, and an impedance of 4 ohms.
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\nIn Arjuna Das’s Mojo Audio room, The Adams were paired with Das’s new Mojo Audio Mystique X DAC ($9999), new Jays Audio CDT-3 Mk III CD transport ($4,990), Rogers High Fidelity KWM-88 integrated tube amplifier ($14,700, above), and assorted Mojo Audio digital cables, interconnects, and power cables, with Rogers speaker cables.
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\nBuilt by hand in Albuquerque, New Mexico, Das’s new Mystique X DAC uses classic technology to deliver a smooth, detailed sound.
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\n“Our ultra-purist, R-2R topology has no digital filters, noise-shaping, upsampling, oversampling, or error-correction,” Mojo Audio’s website states. “Our discrete, class-A, direct-coupled, [LC choke-input power supplies, NOS AD1862 ladder-DAC chips], and the analog output stage has no output capacitors or transformers to limit bandwidth or color the sound.
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\n![](\"\/images\/042822-Infigo-600.jpg\")
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\nThough it sounded okay, the Rogers amp didn’t possess quite enough juice to satisfactorily drive the Alta Audios, so I hoofed it down to the Infigo Audio room, where British Columbian Infigo Audio manufacturer Hans Looman drove The Adams to achieve excellent clarity and dynamics with his Infigo Method 4 DAC\/preamp ($35,000) and Infigo’s Method 3 class-A monoblock amplifiers ($50,000\/pair), which are capable of delivering 250Wpc into a 4 ohm load. Cabling from Infigo’s Sparkle series rounded out this tranquil-sounding hi-fi rig.
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\nThe Mojo room featured a novel approach to grounding.
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\n![](\"\/images\/042822-Mojo_Ground-600.jpg\")
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