The EVO 400 Tube Power Amplifier is PrimaLuna’s flagship all-tube power amp, engineered for reference-level two-channel systems using separates. Designed with a true high-end approach, it delivers exceptional scale, control, and musicality, combining classic tube warmth with outstanding dynamics and authority.
With 70W per channel in Ultra-linear mode / 38W in Triode, and the ability to operate in mono (up to 140W), it offers both power and flexibility for demanding speakers and high-performance systems. Built around oversized transformers, premium components, and meticulous hand wiring, it achieves a wide soundstage, ultra-low noise, and highly natural tonal balance.
Key Features
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All-tube power amplifier (stereo / mono switchable) for high-end separates systems
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70W per channel (Ultra-linear) / 38W (Triode) / 140W mono for maximum flexibility and performance
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Triode / Ultra-linear switching (remote controlled) to tailor sound character instantly
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Adaptive AutoBias™ (exclusive) automatically optimizes tube performance and extends lifespan
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Custom super-wide bandwidth output transformers (largest in EVO line) for deep bass and extended highs
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Massive toroidal power transformers (potted & shielded) for ultra-low noise and stability
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Point-to-point hand wiring (Swiss-made OCC copper) for maximum signal purity
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Takman resistors + premium capacitors for improved linearity and musicality
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Bad Tube Indicator + protection circuit for easy maintenance and reliability
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Wide tube compatibility (EL34, KT88, KT120, KT150, etc.) for sound customization
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Balanced XLR + RCA inputs for flexible system integration
