Evolution 400 vs Musical Fidelity NU-Vista PAM
The NU-Vista PAM's power @ 8ω is 600W against the Evolution 400's 400W and its power @ 4ω 1.0kW against 800W. Both share signal-to-noise (108 dB) and damping factor (>100).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$20,000
Around — community and catalog average, updates slowly
About the Evolution 400
The Krell Evolution 400 Monaural Power Amplifier is a compact, high-power amplifier featuring a massive 3 kW toroidal transformer, delivering 400 watts into 8 Ohms, 800 watts into 4 Ohms, and 1600 watts into 2 Ohms. It uses Krell Current Mode, Active Cascode Topology, and Evolution CAST input technology to minimize distortion and noise, providing exceptional sound clarity and power. The amplifier has a low feedback topology with only 8 dB of nested local feedback and no global feedback, enhancing sonic purity. It includes balanced and single-ended inputs, 12 VDC triggers, and protection circuitry. The chassis is available in silver or black anodized finish. Dimensions are 17.3" W x 9.8" H x 18.8" D (43.8 x 24.9 x 47.8 cm), and it weighs approximately 120 lbs (54.3 kg).
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 400W @ 8Ω
- Power @ 4Ω
- 800W @ 4Ω
- Damping Factor
- >100
- Minimum Impedance
- 2Ω
- Input Sensitivity
- 3.0V RMS
- Input Impedance
- 100Ω
- Max Input Voltage
- 160.0V RMS
Analog Output
Analog signal output specifications
- THD
- 0.020%
- SNR
- 108 dB
- Output Voltage
- 57.0V RMS
- Output Impedance
- 0.055Ω
- Max Output Voltage
- 160.0V RMS
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA, XLR
- Analog Outputs
- Krell binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 438 × 249 × 478 mm (W × H × D)
- Weight
- 54.3 kg (120 lbs)
- Available Colors
- Black, Silver
Key Specifications
Power: 400W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions