Krell Industries Evolution Two Manuel utilisateur

The Evolution Two

Monaural

Preamplifier

•Two megahertz open loop

bandwidth in a zero feedback,

balanced, Krell Current Mode

and CAST circuitry design.

•To eliminate loading effects,

single-ended and balanced volt-

age inputs drive a dynamically-

cascoded JFET buffer, which

has tremendous open-loop line-

arity and very high input imped-

ance.

•All signal gain is realized in the

current domain using proprie-

tary multiple-output current

mirrors with nearly 500 times

the open loop linearity of other

designs.

•Negative feedback is not used

anywhere in the preamp be-

cause it is not necessary. Open-

loop distortion is typically less

than 0.005% (50 parts per mil-

lion).

•The volume control is realized

with a 16-bit balanced resistor

ladder — bandwidth and tran-

sient response of the preamp

circuitry are virtually unaffected

by the volume setting.

•Housed in a separate chassis,

the power supply makes use of

extensive electrical and mag-

netic shielding to keep radiated

interference out of critical pre-

amplifier circuits.

•Each monaural preamplifier has

a power supply capability equivalent

to many stereo power amplifiers.

•A 170 VA toroidal transformer

drives four 8-amp bridge rectifi-

ers and 39,600 microfarads of

filter capacitance.

•A new Krell-designed digital

control circuit monitors and

optimizes the preamplifier’s

operating parameters.

•Any number of preamplifiers

may be linked and controlled

from a single master, making

high quality, multi-channel au-

dio systems a reality for the

first time.

•Offered in diamond-cut silver or

luxurious black finish.

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. CASTTM and Krell Current ModeTM aretrademarks of Krell Industries, Inc. All other trademarks and trade names

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 lead-

ing 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 phe-

nomenal power in the most refined man-

ner imaginable, the Evolution system is a

synthesis of almost impossible contradictions;a unique blend of

beauty, grace, and power.

Savor

a totallynew

listeningexperience...

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

203-799-9954 •FAX203-891-2028 •krell@krellonline.com •www.krellonline.com

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