The PrimaLuna EVO 100 Integrated is the entry-level vacuum tube integrated amplifier in the acclaimed EVO Series by the Dutch manufacturer PrimaLuna.

Designed to deliver the rich warmth and natural tonality characteristic of valve amplification alongside long-term operational reliability, the EVO 100 features a power stage factory-equipped with four EL34 tubes (or 6L6G depending on configuration), delivering up to 40 Watts per channel.

At the core of its performance is PrimaLuna's proprietary Adaptive AutoBias technology, which continuously monitors and adjusts valve bias in real-time. This eliminates the need for manual bias adjustments and significantly extends tube lifespan. The chassis—constructed from hand-welded heavy-gauge steel with a five-coat hand-rubbed finish—houses custom-designed, encapsulated toroidal power and output transformers. The EVO 100 also features a dedicated front-panel headphone output driven directly by the main tube amplification stage.

Key Features and Technical Specifications

• Type: Vacuum tube stereo integrated amplifier;

• Stock Tube Complement: 4x EL34 (power tubes), 2x 12AX7 (preamp tubes), 2x 12AU7 (driver tubes);

• Tube Rolling Compatibility: Supports EL34, 6L6G, KT66, KT88, KT120, and KT150 power tubes via AutoBias;

• Bias Technology: Proprietary Adaptive AutoBias circuit (real-time automatic bias regulation);

• Power Output per Channel:

  • 40 Watts RMS into 8 Ω (with EL34 tubes);

• Headphone Stage: Front-panel headphone jack driven directly by the complete tube circuit via internal divider;

• Analog Inputs: 4x RCA line-level pairs (CD, Tuner, Aux 1, Aux 2);

• Analog Outputs:

  • Speaker binding posts with dedicated 4 Ω and 8 Ω taps;

  • 1x Stereo RCA Tape Out pair;

  • 1x Front 6.35 mm (1/4") headphone jack;

• Audio Performance:

  • Frequency Response: 10 Hz – 32 kHz (+/- 1 dB), 10 Hz – 75 kHz (+/- 3 dB);

  • Signal-to-Noise Ratio (SNR): 90 dB (101 dBA);

  • Input Sensitivity: 260 mV;

  • Input Impedance: 100 kΩ;

  • Total Harmonic Distortion (THD): < 0.2% @ 1 W; < 2% at rated power;

• Construction: Custom in-house toroidal transformers, point-to-point hand wiring, sealed input relays, ALPS Blue Velvet motorized volume potentiometer;

• Included Accessories: Removable protective tube cage, heavy-duty full-metal IR remote control;

• Available Finishes: Black or Silver with brushed aluminum front panel;

• Dimensions (W x H x D): 280 mm x 190 mm x 405 mm (11.0" x 7.5" x 15.9");

• Net Weight: 18 kg (39.7 lbs).