Krell Evolution One Brochure

203-799-9954 • FAX [phone] • [e-mail] • www.krellonline.com

WCES 2005 - New Product Announcement

Krell ® is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell Industries, Inc., and authorized agents. Evolution Plateau Bias SystemTM is a trademark of Krell Industries, Inc. and is a Krell technology based on

U.S. Patent No. 5,331,291. CAST

TM

and Krell Current ModeTM are trademarks of Krell Industires, Inc. All other trademarks and trade names are registered to their respective companies. © 2004 by Krell Industries, Inc. All rights reserved.

The Evolution Series

Expressed through a combination
of breakthrough technologies and
inspired vision, the Evolution Two
Preamplifier and Evolution One
Power Amplifier culminate more
than 25 years of industry lead­ing audio design. The relentless pursuit of the most realistic
music reproduction is at the heart of Krell design, and this

heart beats strongest in the Evolution. The Krell trademark is
synonymous with music reproduction that fills a room with in-

toxicating detail and startling dynamics.
Like live music, this effortless power and

instant response elicit a visceral response
that engages all the senses. Yielding phe­nomenal power in the most refined man­ner imaginable, the Evolution system is a

synthesis of almost impossible contradicions; a unique blend of
beauty, grace, and power.

Savor

a totally new

listening experience...

Krell Industries, Inc. • 45 Connair Road, Orange, CT 06477-3650

• Newly redesigned Evolution

Plateau Bias System fea­tures 12 individual bias
levels for optimum per­formance and efficiency.

• A proprietary bias monitor

continuously measures and
adjusts the output stage bias,
insuring a lifetime of accuracy.

• Housed in a separate chassis,

the power supply makes use of
extensive electrical and mag-
netic shielding to keep radiated
interference out of critical am­plifier circuits.

• Internal high current line condi-

tioning circuitry filters RF noise
on the AC mains, as well as
compensating for asymmetric
power waveforms and DC on
the mains.

• Advanced microprocessor con-

trol monitors critical operational
parameters.

• Bias, load impedance, regulator

output voltages and operating
temperature are all continu­ously monitored.

• All signal gain is realized in

the current domain using pro­prietary multiple-output current
mirrors with extraordinary open
loop linearity.

• The signal path is fully com-

plementary and fully balanced
from input to output, featuring

Krell Current Mode and CAST
circuitry.

• The amplifier employs no global

negative feedback, and the final
gain stages use only 8 dB of
local, nested, negative feedback.

This is one five-hundredth the
amount used in most solid-state
power amplifiers. The result is
an extraordinarily open, liquid,
effortless sound.

• The rails powering the ampli-

fierís low level and gain stages
are regulated twice for total

immunity from fluctuations in
the AC mains and virtually
noise-free output.

• All the regulators are located in

the amplifier chassis to provide
ultra low impedance supply rails
for the audio circuitry.

• Offered in diamond-cut silver or

luxurious black finish.

The Evolution One

Monaural

Power Amplifier