07/10/2026
Flagship Audiophile Combo
PrimaLuna EVO 400 Tube Preamplifier
Key Highlights & Features:
Dual-Mono Topology & Tube Rectification: Fully dual-mono design powered by two 5AR4 rectifier tubes for an ultra-low noise floor, natural midrange warmth, and deep three-dimensional imaging.
Point-to-Point Wiring: Hand-soldered point-to-point construction utilizing premium Swiss-made silver-plated oxygen-free copper wiring.
AC Offset Killer: Proprietary circuit that eliminates power transformer hum and DC line noise, resulting in jet-black musical backgrounds.
Premium Audio Grade Parts: Takman Japanese audiophile resistors, French DuRoch tinfoil capacitors, and motorized ALPS Blue Velvet volume potentiometer.
Balanced Architecture: Fully balanced XLR inputs/outputs alongside premium single-ended RCA connections.
Technical Specifications
Tube Complement: 6 × 12AU7, 2 × 5AR4
Inputs: 3 × Stereo RCA, 2 × Stereo Balanced XLR, 1 × Home Theater Bypass
Outputs: 1 × Stereo RCA, 1 × Stereo XLR, 1 × Tape Out
Frequency Response: 10 Hz – 95 kHz (+/- 1 dB)
Signal-to-Noise Ratio: 93 dB (98 dBA)
Output Impedance: 256 Ω
Weight: ~24 kg (52.8 lbs)
PrimaLuna EVO 400 Tube Power Amplifier
Key Highlights & Features
Adaptive AutoBias (Exclusive): Smart sensor-driven real-time bias adjustment—no multimeters, adjustments, or manual biasing required. Extends tube lifespan and lowers distortion.
On-the-Fly Triode / Ultra-Linear Switching: Switch between the lush, intimate vocal warmth of Triode mode and the punchy, dynamic drive of Ultra-Linear mode directly via remote control.
Stereo or Monoblock Bridging: Operates as a high-current stereo amplifier or easily flips into bridge-mono mode to double power output per channel.
Ultimate Tube Rolling Versatility: Built to handle EL34, KT88, KT120, and KT150 power tubes without circuit recalibration.
Bad Tube Indication (BTI): Dedicated LEDs automatically pinpoint any failing tube while protecting internal transformers with soft-recovery circuitry.
Technical Specifications
Tube Complement: 8 × EL34 (Power), 6 × 12AU7 (Driver/Input)
Power Output (Stereo): 70W per channel (Ultra-Linear) / ~38W per channel (Triode)
Power Output (Mono): Up to 140W+ (Ultra-Linear)
Speaker Taps: 4 Ω, 8 Ω, 16 Ω (Stereo) | 2 Ω, 4 Ω, 8 Ω (Mono)
Frequency Response: 9 Hz – 60 kHz (+/- 1 dB)
Signal-to-Noise Ratio: 95 dB (105 dBA)
Inputs: 1 × Stereo RCA, 1 × Stereo XLR
Weight: ~31 kg (68.2 lbs)