PrimaLuna EVO 400 Tube Integrated Amplifier (EL34)

The PrimaLuna EVO 400 Tube Integrated Amplifier replaces the previous Dialogue High Power model.  The current comes with an Ultra-Linear Switching remote control which has more extension and greater power in addition to a warmer, fuller sound.

The EVO 400 also has the Takman Resistors from Japan.  These resistors produce low noise, linearity, and musicality. CUSTOM TOROIDAL POWER TRANSFORMER

All PrimaLuna products use massive, potted toroidal transformers in a metal housing with non-microphonic resin in order to further reduce noise and to protect the windings from moisture and deterioration forever.


New EVO400 Models vs previous Dialogue models

  • Upgraded output transformers
  • Upgraded headphone output
  • Phono Stage option for Integrated amp and preamps
  • Better bass control and details across the range





If a tube fails, the PrimaLuna Adaptive AutoBias will instantly put the amplifier into protection mode so no parts can get damaged. A red LED will light up in front of the tube that needs replacing. Simply plug in another tube, and listen. Absolutely no guesswork.


Output transformers are the most important part of any tube amp.  It is there to extend tube life and with bandwidth to bring slam to your system.


PrimaLuna custom-winds our own massive toroidal power transformers that are low in hum and EMI. The AC Offset Killer lowers transformer noise resulting in a sense of space and texture. The resonance of an acoustic guitar or violin string seems to trail on forever. The AC Offset Killer will bring you goosebumps.


100 DA Converter

More information




EVO 400 INT.jpg



Power: Stereo Ultra-linear (8Ω, 1% THD)70 watts x 2 (EL34)
Power: Stereo Triode (8Ω, 1% THD)38 watts x 2 (EL34)
Inputs5x Stereo RCA, Stereo RCA HT Bypass
Outputs4 & 8 Ω, RCA Stereo/Mono Subwoofer, Stereo RCA Tape Out, 1/4″ Headphone
Headphone Out11.4 watts (32 Ω, 1% THD), 6.56 watts (64 Ω, 0.70% THD), 3.05 watts (150 Ω, 0.60% THD), 1.58 watts (300 Ω, 0.60% THD), 0.82 watts (600 Ω, 0.60% THD)
THD< 0.1% @ 1W, < 2% @ Rated Power
Freq. Response9Hz-50kHz +/- 1dB, 8Hz-68kHz +/- 3dB
S/N Ratio90 dB, 98 dBA
Input Sensitivity320 mV (EL34)