(Specifications continued)

Measurement

Evolution 600 Amplifier

Evolution 900 Amplifier

FREQUENCY RESPONSE

20 Hz to 20 kHz +0, –0.18 dB

20 Hz to 20 kHz +0, –0.18 dB

 

<0.5 Hz to 120 kHz +0, –3 dB

<0.5 Hz to 120 kHz +0, –3 dB

SIGNAL-TO-NOISE RATIO

 

 

Wideband, unweighted, referred to full

>110 dB

>113 dB

power output

 

 

“A” weighted

>119 dB

>122 dB

GAIN

25.4 dB

25.4 dB

TOTAL HARMONIC DISTORTION

<0.02% at 1 kHz, at 600 W, 8 Ohms

<0.02% at 1 kHz, at 900 W, 8 Ohms

 

<0.15% at 20 kHz, at 600 W, 8 Ohms

<0.15% at 20 kHz, at 900 W, 8 Ohms

 

 

 

INPUT IMPEDANCE

 

 

Single-ended

100 kOhms

100 kOhms

Balanced

200 kOhms

200 kOhms

CAST

70 Ohms

70 Ohms

INPUT SENSITIVITY

 

 

Single-ended or balanced

3.72 V rms

4.55 V rms

CAST

3.72 mA rms

4.55 mA rms

 

 

 

OUTPUT POWER

600 W rms at 8 Ohms

900 W rms at 8 Ohms

 

1200 W rms at 4 Ohms

1800 W rms at 4 Ohms

 

2400 W rms at 2 Ohms

3600 W rms at 2 Ohms

OUTPUT VOLTAGE

196 V peak-to-peak

240 V peak-to-peak

 

69 V rms

85 V rms

OUTPUT CURRENT

49 A peak

60 A peak

SLEW RATE

100 V/s

90 V/s

OUTPUT IMPEDANCE

<0.030 Ohms, 20 Hz to 20 kHz

<0.023 Ohms, 20 Hz to 20 kHz

DAMPING FACTOR

>270, 20 Hz to 20 kHz

>350, 20 Hz to 20 kHz

Referred to 8 Ohms

 

 

 

 

 

POWER CONSUMPTION

 

 

Stand-by

260 W

440 W

Idle

410 W

650 W

Maximum

3800 W

5000 W

HEAT OUTPUT

 

 

Stand-by

890 BTU/hr.

1500 BTU/hr.

Idle

1400 BTU/hr.

2200 BTU/hr.

Maximum

5500 BTU/hr.

7700 BTU/hr.

 

 

 

INPUTS

1 single-ended via RCA connector

1 single-ended via RCA connector

 

1 balanced via XLR connector

1 balanced via XLR connector

 

1 CAST via 4-pin bayonet connector

1 CAST via 4-pin bayonet connector

OUTPUTS

1 pair Krell binding posts

1 pair Krell binding posts

 

 

 

DIMENSIONS

17.3 in. W x 9.8 in. H x 22.1 in. D

17.3 in. W x 9.8 in. H x 26.1 in. D

 

438 mm W x 248 mm H x 560 mm D

438 mm W x 248 mm H x 662 mm D

WEIGHT

 

 

Shipping

150 lb., 67.9 kg

190 lb., 86 kg

Unit only

135 lb., 61.1 kg

175 lb., 79.2 kg

 

 

 

All operational features, functions, specifications, and policies are subject to change without notification.

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Krell Industries manual Measurement Evolution 600 Amplifier Evolution 900 Amplifier

Evolution specifications

Krell Industries has established itself as a pioneer in high-performance audio equipment, renowned for delivering unparalleled sound quality and innovative technologies. Founded in 1980, the company quickly became synonymous with premium amplification, earning accolades from audiophiles worldwide. Over the years, Krell has evolved its product lineup to include not only amplifiers but also preamplifiers, digital audio players, and complete home theater systems.

One of the hallmark features of Krell products is their robust build quality. The company employs a strong engineering ethos that prioritizes durability and reliability in all its offerings. The iconic, heavy chassis of Krell components serves not only as a protective shell but also minimizes vibrations, which can adversely affect sound quality. This engineering strategy is evident in their signature line of amplifiers, which utilize high-grade materials and precision craftsmanship to ensure longevity and optimum performance.

Krell has also been at the forefront of technological advancements. The introduction of class A amplification circuitry is one such innovation that has been integral to the company's sound signature, allowing for minimal distortion and a rich, dynamic range. This technology ensures that even the most subtle nuances in music are reproduced with fidelity and clarity.

Moreover, Krell has embraced digital audio, creating DACs (digital-to-analog converters) and streaming devices that support high-resolution audio formats. This commitment to digital excellence reflects the company's understanding of evolving consumer preferences. Many of their devices feature wireless connectivity options, allowing users to stream music seamlessly from various sources without sacrificing audio quality.

In addition, Krell emphasizes user-friendly interfaces and versatility in its designs. Customers can often find features such as programmable presets, remote control functionality, and intuitive navigation systems, making it easier to tailor their listening experience.

Krell Industries’ evolution over the years showcases a dedication to audio fidelity, technological advancement, and stylish design. As the company continues to innovate within the high-end audio landscape, it maintains its reputation as a brand that audiophiles can trust, delivering exceptional sound experiences that stand the test of time.