PrimaLuna
EVO 400 Integrated Amplifier
Best tube amplifier for audiophiles seeking power and sonic purity.
Experience exceptional audio with the PrimaLuna EVO 400 Integrated Amplifier. This tube amplifier delivers robust, high-fidelity sound, featuring premium components and a heavy-gauge steel chassis for enduring quality. It offers versatile connectivity, including RCA and XLR inputs, plus dedicated tape and subwoofer outputs. Engineered for dynamic sound, the EVO 400 provides substantial power to drive demanding speakers with authority and finesse, making it a sophisticated centerpiece for any serious two-channel audio system.
$6495.00
Owner Satisfaction
4.7
/ 5
Category Rank
325
/ 1719
#325 in Power Amplifiers
Price vs Category Average
-21%
Below average
Power Output
88150
/ watts per channel (KT, Ultralinear)
Who it's for
- Audiophiles seeking hassle-free tube maintenance and peak performance
- Sound enthusiasts who enjoy customizing their unique sonic signature
- Listeners prioritizing long-term reliability and premium internal construction
Who should skip it
- Users with limited rack space or fragile shelving units
- Owners requiring enclosed cabinetry for their audio equipment
- Budget-conscious buyers wary of ongoing tube replacement expenses
Performance breakdown
Tube Power Delivery
KT150 tubes provide authoritative, high-fidelity drive for demanding speaker loads.
Signal Purity
Point-to-point wiring ensures a clean, uncolored path for your audio signal.
Build Integrity
Heavy-gauge steel chassis offers exceptional durability and vibration-resistant structural support.
System Versatility
Comprehensive inputs and subwoofer outputs allow for seamless multi-component integration.
Maintenance Ease
Adaptive AutoBias technology eliminates the need for manual tube calibration.
Connectivity Options
Balanced XLR and multiple RCA inputs accommodate a wide range of sources.
Key Specs
Power Output
88 watts per channel (KT150, Ultralinear)
Channels
2
Weight
68 lbs (31 kg)
Dimensions
15.2" W x 8.1" H x 15.9" D (385 x 205 x 405 mm)
Connectivity
6x RCA stereo in, 1x XLR stereo in, 1x Home Theater Bypass in, Speaker terminals (4 & 8 Ohm), Tape Out, Subwoofer Out
Frequency Response
10Hz-65kHz +/- 1dB
Total Harmonic Distortion
< 0.1% at 1W
Signal to Noise Ratio
90dB
Features
- 88 watts per channel with KT150 tubes
- Adaptive AutoBias for optimal tube performance
- Home Theater Bypass for seamless integration
- Point-to-point wiring for signal purity
- RCA and XLR stereo inputs
- Robust heavy-gauge steel chassis
- Dedicated Tape Out and Subwoofer Out
What customers say
Customers overwhelmingly praise the PrimaLuna EVO 400 Integrated Amplifier for its exceptional sound quality, describing it as warm, rich, and musical with a captivating soundstage. A key highlight is its remarkable versatility, driven by the Adaptive AutoBias feature, which simplifies tube rolling for personalized sonic tuning. Reviewers also frequently laud the robust build quality and perceived longevity of the unit. Despite its premium positioning, many owners feel the amplifier delivers tremendous value, often outperforming much costlier equipment. The positive ownership experience is further enhanced by user friendly design elements. This combination of sonic excellence and flexible customization makes the EVO 400 a highly satisfying component for dedicated music lovers.
Know before you buy
With 88 watts per channel using KT150 tubes, this amplifier is powerful enough to drive most demanding floor-standing speakers with authority. It features dedicated 4 and 8 Ohm speaker terminals to ensure optimal impedance matching for a wide variety of high-fidelity speakers.
Adaptive AutoBias continuously monitors and adjusts the tube bias in real-time. This eliminates the need for manual adjustments, ensures the tubes operate at their peak performance, and significantly extends the lifespan of your vacuum tubes.
Yes, the amplifier includes a dedicated Home Theater Bypass input. This allows you to integrate the EVO 400 into a surround sound system, letting your AV processor control the volume for the front channels while using the PrimaLuna for high-quality stereo amplification.
No, the EVO 400 is a pure analog tube amplifier and does not include a built-in digital-to-analog converter or a remote control. It is designed as a dedicated, high-performance centerpiece for analog audio systems.
Point-to-point wiring avoids the use of printed circuit boards, which can introduce signal interference and degradation. This construction method ensures the shortest, cleanest signal path possible, resulting in superior signal purity and a more transparent sound.
Yes, the EVO 400 features a dedicated subwoofer output. This allows you to easily integrate a powered subwoofer to reinforce the low-frequency performance of your audio system.
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