Krell Industries Ships Two New Power Amplifiers

The new Evolution power amplifiers break through bandwidth limitations of conventional designs resulting in near perfect performance in the audible range.

Orange, CT - October 2006 - Krell Industries proudly announces shipping of the Evolution 403 and 900 amplifiers from their recently introduced Evolution series. The Evolution -branded products extend the series with new power amplifiers that represent the culmination of 25 years of Krell design and manufacturing excellence.


All Evolution power amplifiers were engineered to be a natural extension of their flagship counterpart; the Evolution One amplifier. Taking what they learned from this benchmark product, Krell designed the Evolution 403 and 900 with the same no -holds -barred approach to create an entire lineup of amplifiers that are without peer.

Krell's new Evolution 403 is a three -channel power amplifier rated at 400 -watts that features Krell's proprietary CAST (Current Audio Signal Transmission) circuitry which utilizes current gain topologies allowing the signal to remain in the current domain from input to output. Keeping signals in the current domain avoids unnecessary current to voltage conversions that add distortion, require heavy feedback and severely limit bandwidth.

Like its inspiration the Evolution One, Krell's Evolution 900 is a 900 -watt monaural amplifier featuring Krell's performance enhancing CAST circuitry and the power to push any speaker to its absolute limit. Both the 403 and 900 utilize a 6000 VA power supply that makes use of extensive electrical and magnetic shielding to keep radiated interference out of critical amplifier circuits. Also featured is the Active Cascode Topology which eliminates global negative feedback (only nested local feedback is employed around individual gain blocks) resulting is an extraordinarily open, liquid and effortless sound.

Other innovative features of Krell's new amplifiers include internal high current line conditioning circuitry which filters RF noise on the AC mains, while compensating for asymmetric power waveforms and DC on the mains. The rails powering the amplifiers' low level and gain stages are regulated twice for total immunity from fluctuations in the AC mains and virtually noise -free output. Advanced microprocessor control monitors critical operational parameters - bias, load impedance, regulator output voltages and operating temperature are all continuously monitored.

The aesthetic of the new Evolution Series takes Krell's industrial design to an entirely new level. The machined custom aluminum chassis feature a 1.5 -inch faceplate that not only looks incredible but fronts the resonance free environment that houses the sensitive electronics contained within. All Evolution series components maintain the stout and structurally sound build quality Krell is known for with the Krell -coat finish giving the components a timeless look with a feel that is inviting and built to last. Components are available in diamond -cut silver or luxurious black finish.

Pricing for both the Evolution 403 and the 900 is $20,000.

For more information, please visit www.krellonline.com.


Established in 1980, Krell Industries, Inc. is the premier manufacturer of high -end audio equipment. Guided by the innovative designs and guidance of CEO Dan D'Agostino, Krell's extensive line of amplifiers, preamplifiers, DVD players, surround sound processors, and loudspeakers are renowned for their exceptional quality, and the Krell brand has become synonymous with outstanding high -end performance among music and home theater enthusiasts everywhere.

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