The PrimaLuna EVO 400 Tube Preamplifier represents the absolute pinnacle of engineering and craftsmanship in tube preamplification from the Dutch manufacturer.

Designed without financial or technical compromise, the EVO 400 is a reference Dual Mono preamplifier built to compete directly with the world's most prestigious hi-end components, delivering total sonic transparency, an imposing holographic soundstage, and boundless dynamics.

The entire audio section features point-to-point construction, fully hand-wired using custom-specified silver-plated OFC copper wiring. Its Dual Mono circuit incorporates high-performance dual vacuum tube rectification (2x 5AR4), paired with oversized toroidal transformers and dedicated choke filter inductors for each channel, ensuring a virtually zero noise floor and immediate energy reserves.

The EVO 400 employs a configuration of six 12AU7 tubes in the gain and driver stages while offering versatile connectivity via balanced XLR inputs and outputs coupled through dedicated, premium-quality transformers. The unit is completed by a motorized ALPS Blue Velvet volume attenuator, an excellent integrated tube headphone amplifier, an HT Pass-Thru input, and internal mounting capability for the optional PrimaLuna PhonoLogue phono module.

• Type: Flagship Dual Mono stereo tube preamplifier

• Included Vacuum Tubes: 6x 12AU7 (preamplifier and driver stage), 2x 5AR4 (rectifiers)

• Frequency Response:

  • 10 Hz to 95 kHz (+/- 1 dB)

  • 8 Hz to 100 kHz (+/- 3 dB)

• Total Harmonic Distortion (THD): Less than 0.5% at 2 V

• Signal-to-Noise Ratio (S/N Ratio): 93 dB (100 dBA)

• Voltage Gain: 10 dB

• Input Sensitivity: 650 mV

• Input Impedance: 220 kOhm

• Output Impedance: 2800 Ohm

• Power Consumption: 61 Watts

• Analog Inputs: 3x stereo RCA line inputs, 2x stereo balanced XLR inputs, 1x stereo RCA HT Pass-Thru input

• Analog Outputs: 1x stereo RCA Pre-Out, 1x stereo balanced XLR Pre-Out, 1x stereo RCA Tape-Out (fixed level), 1x 6.3 mm headphone output jack

• Dimensions (W x H x D): 385 mm x 205 mm x 405 mm

• Net Weight: 24 kg

• Available Finishes: Front panel in Silver or Black aluminum with a hand-rubbed, three-coat high-gloss black chassis