Specifications
Measurement | Evolution 302 Stereo Amplifier | Evolution 402 Stereo Amplifier |
FREQUENCY RESPONSE | 20 Hz to 20 kHz +0, | 20 Hz to 20 kHz +0, |
| <0.5 Hz to 180 kHz +0, | <0.5 Hz to 120 kHz +0, |
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Wideband, unweighted, referred to full | >107 dB | >106 dB |
power output |
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“A” weighted | >117 dB | >116 dB |
GAIN | 25.5 dB | 25.4 dB |
TOTAL HARMONIC DISTORTION | <0.02% at 1 kHz, at 300 W, 8 Ohms | <0.02% at 1 kHz, at 400 W, 8 Ohms |
| <0.15% at 20 kHz, at 300 W, 8 Ohms | <0.15% at 20 kHz, at 400 W, 8 Ohms |
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INPUT IMPEDANCE |
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100 kOhms | 100 kOhms | |
Balanced | 200 kOhms | 200 kOhms |
CAST | 75 Ohms | 70 Ohms |
INPUT SENSITIVITY |
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2.60 V rms | 3.04 V rms | |
CAST | 2.60 mA rms | 3.04 mA rms |
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OUTPUT POWER | 300 W rms at 8 Ohms | 400 W rms at 8 Ohms |
All channels driven | 600 W rms at 4 Ohms | 800 W rms at 4 Ohms |
| 1200 W rms at 2 Ohms | 1600 W rms at 2 Ohms |
OUTPUT VOLTAGE | 139 V | 160 V |
| 49 V rms | 57 V rms |
OUTPUT CURRENT | 35 A peak | 37 A peak |
SLEW RATE | 120 V/∝s | 100 V/∝s |
OUTPUT IMPEDANCE | <0.040 Ohms at 20 Hz | <0.055 Ohms at 20 Hz |
| <0.053 Ohms, 20 Hz to 20 kHz | <0.064 Ohms, 20 Hz to 20 kHz |
DAMPING FACTOR | >200 at 20 Hz | >145 at 20 Hz |
Referred to 8 Ohms | >150, 20 Hz to 20 kHz | >125, 20 Hz to 20 kHz |
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POWER CONSUMPTION |
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150 W | 370 W | |
Idle | 320 W | 570 W |
Maximum | 3400 W | 3800 W |
HEAT OUTPUT |
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510 BTU/hr. | 890 BTU/hr. | |
Idle | 1100 BTU/hr. | 1300 BTU/hr. |
Maximum | 5500 BTU/hr. | 6400 BTU/hr. |
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INPUTS | 2 | 2 |
| 2 balanced via XLR connector | 2 balanced via XLR connector |
| 2 CAST via | 2 CAST via |
OUTPUTS | 2 pairs Krell binding posts | 2 pairs Krell binding posts |
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DIMENSIONS | 17.3 in. W x 9.8 in. H x 20.7 in. D | 17.3 in. W x 9.8 in. H x 22.1 in. D |
| 438 mm W x 248 mm H x 525 mm D | 438 mm W x 248 mm H x 550 mm D |
WEIGHT |
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Shipping | 138 lb., 62.4 kg | 150 lb., 67.9 kg |
Unit only | 120 lb., 54.3 kg | 135 lb., 61.1 kg |
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All operational features, functions, specifications, and policies are subject to change without notification.
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