Reviews

Evolution 900e, 600e

Hi Fi Critic Review

"The overall quality is so well balanced and so even over the frequency range, it's easy to underestimate how good this amplifier is, and one only finds out what might be missing when substituting other references."

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Downloads

Evolution

     - Brochure

     - e Series Owners Reference

     - e Series Quick Start Guide

 

Specifications

Evolution 900e

Frequency Response

20 Hz to 20 kHz +0, -0.18 dB

<0.5 Hz to 120 kHz +0, -3 dB

 

Signal to Noise Ratio

>113 dB, unweighted, referred to full power output

>122 dB, "A"-weighted

 

Gain

25.4 dB

 

Total Harmonic Distortion

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

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

 

Input Impedance

Single Ended: 100 kOhms

Balanced: 200 kOhms

CAST: 70 Ohms

 

Input Sensitivity

Single Ended or Balanced: 4.55 V rms

CAST: 4.55 mA rms

 

Output Power

900 W RMS at 8 Ohms

1800 W RMS at 4 Ohms

Output Voltage

240 V peak-to-peak

85 V RMS

 

Output Current

60 A peak

 

Slew Rate

90 V/µs

 

Output Impedance

<0.023 Ohms, 20 Hz to 20 kHz

 

Damping Factor (referred to 8 ohms)

>350, 20 Hz to 20 kHz

 

Transformer

Two 3000 VA (6000 VA total) for audio circuitry

One 10 VA for digital control circuitry

 

Power Supply Capacitance

108,000 µF

 

Power Consumption

Standby: 2 W

(High-current standby: 440W) Idle: 650 W

Maximum: 5000 W

Heat Output

Stand-by: 7 BTU/hr. (High-current standby: 1500 BTU/hr.

Idle: 2200 BTU/hr.

Maximum: 7700 BTU/hr.

 

Inputs

1 single-ended via RCA connector

1 balanced via XLR connector

1 CAST via 4-pin bayonet connector

 

Outputs

1 pairs Krell binding posts

 

Dimensions

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

438 mm W x 248 mm H x 662 mm D

 

Weight

Shipped: 190 lb., 86 kg

Unit Only: 175 lb., 79.2 kg

Evolution 600e

Frequency Response

20 Hz to 20 kHz +0, -0.18 dB

<0.5 Hz to 120 kHz +0, -3 dB

 

Signal to Noise Ratio

>110 dB, wide band, unweighted, referred to full power output

>119 dB, "A"-weighted

 

Gain

25.4 dB

 

Total Harmonic Distortion

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

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

 

Input Impedance

Single Ended: 100 kOhms

Balanced: 200 kOhms

CAST: 70 Ohms

 

Input Sensitivity

Single Ended or Balanced: 3.72 V rms

CAST: 3.72 mA rms

 

Output Power

600 W RMS at 8 Ohms

1200 W RMS at 4 Ohms

Output Voltage

196 V peak-to-peak

69 V RMS

 

Output Current

49 A peak

 

Slew Rate

100 V/µs

 

Output Impedance

<0.030 Ohms, 20 Hz to 20 kHz

 

Damping Factor (referred to 8 ohms)

>270, 20 Hz to 20 kHz

 

Transformer

Two 2200 VA (4400 VA total) for audio circuitry

One 10 VA for digital control circuitry

 

Power Supply Capacitance

108,000 µF

 

Power Consumption

Standby: 2 W

(High-current standby: 260W) Idle: 410 W

Maximum: 3800 W

Heat Output

Stand-by: 7 BTU/hr. (High-current standby: 890 BTU/hr.

Idle: 1400 BTU/hr.

Maximum: 5500 BTU/hr.

 

Inputs

1 single-ended via RCA connector

1 balanced via XLR connector

1 CAST via 4-pin bayonet connector

 

Outputs

1 pairs Krell binding posts

 

Dimensions

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

438 mm W x 248 mm H x 560 mm D

 

Weight

Shipped: 150 lb., 67.9 kg

Unit Only: 135 lb., 61.1 kg

Evolution 400e

Frequency Response

20 Hz to 20 kHz +0, -0.18 dB

<0.5 Hz to 125 kHz +0, -3 dB

 

Signal to Noise Ratio

>108 dB, wide band, unweighted, referred to full power output

>118 dB, "A"-weighted

 

Gain

25.4 dB

 

Total Harmonic Distortion

<0.02% at 1 kHz, at 400 W, 8 Ω

<0.15% at 20 kHz, at 400 W, 8 Ω

 

Input Impedance

Single-ended: 100 kΩ

Balanced: 200 kΩ

CAST: 70 Ω

 

Input Sensitivity

Single-ended or balanced: 3.04 V RMS

CAST: 3.04 mA RMS

 

Output Power

400 W RMS at 8 Ω

800 W RMS at 4 Ω

Output Voltage

160 V peak-to-peak

57 V RMS

 

Output Current

37 A peak

 

Slew Rate

100 V/μs

 

Output Impedance

<0.055 Ω at 20 Hz

<0.064 Ω, 20 Hz to 20 kHz

 

Damping Factor

>145 at 20 Hz, referred to 8 Ω

>125, 20 Hz to 20 kHz, referred to 8 Ω

 

Power Consumption

Stand-by: 2 W

High Current Stand-by: 150 W

Idle: 210 W

Maximum: 2500 W

Heat Output

Stand-by: 7 BTU/hr.

High Current Standby: 510 BTU/hr.

Idle: 720 BTU/hr.

Maximum: 3800 BTU/hr.

 

Inputs

1 single-ended via RCA connector

1 balanced via XLR connector

1 CAST via 4-pin bayonet connector

 

Outputs

1 pair Krell binding posts

 

Dimensions

14.50 in. W x 9.75 in. H x 20.65 in. D

368 mm W x 248 mm H x 525 mm D

 

Weight

120 lbs., 54.3 kg (shipping)

102 lbs., 46.2 kg (unit only)

Press Releases

Hi Fi Critic Review

"The overall quality is so well balanced and so even over the frequency range, it's easy to underestimate how good this amplifier is, and one only finds out what might be missing when substituting other references."