PrimaLuna EVO 100 (integrated) black

Toroidal Power Transformer

Power transformers generate two types of noise: magnetic and acoustic. That’s why toroidal power transformers are used in the best audio products. Compared to standard transformers, toroids emit about 1/10 of the magnetic field that pollutes the music and obscures details. Moreover, the absence of an air gap generally means that toroids have an 8:1 reduction in acoustic noise. Since transformers are the most expensive components in any audio product, manufacturers will even house cheaper C-core and EI-core transformers in an off-board power supply with an umbilical cord rather than switch to a costly toroid. The cost increase is significant, but PrimaLuna doesn’t cut corners. All PrimaLuna products use massive potted toroidal transformers.

Point-to-Point Wiring

You spend a lot of money on interconnects. So why does the signal go straight from the RCA jacks or speaker terminals to printed circuit boards with copper traces so thin you can barely see them? What’s high-end about that?

PrimaLuna uses point-to-point wiring on all its products. The entire signal path, including resistors and capacitors, is painstakingly hand-wired with heavy-gauge cable by a skilled craftsman.

Tube Fault Indicator

PrimaLuna’s engineers wanted to make owning a tube amp so simple you’d have no excuse not to fulfill your tube dreams.

If a tube fails, Adaptive AutoBias will instantly put the amp into protection mode so no parts can be damaged. A red LED will light up in front of the tube that needs replacing. (ProLogue Classic lights an LED on the front panel.) Simply plug in another tube and listen. No guesswork. No smoking amp. No need to break out the soldering iron or drop your amp off at UPS.

Extended Lifespan

PrimaLuna runs its output tubes with minimal dissipation without entering crossover distortion. When you look at our amps, they deliver less power to each tube. Using the KT-120 as an example, a PrimaLuna will only give you 21W per tube. So running a pair of them, you get 42 watts. That’s a lot of power, but the demands per tube are just a fraction of that from some manufacturers who give you 100W from a pair of KT-120s. That’s a cheap way to get big power, and it’s just that: cheap. In fact, free. Getting more power the right way is expensive. It requires bigger transformers, sockets, wiring, resistors, capacitors, and tubes to do it. That’s exactly what PrimaLuna did. But we didn’t stop there.

Technical Specifications

Audio Performance

• Ultra-linear power: 2 × 40 W at 8 Ω with EL34 tubes
• Frequency response: 10 Hz - 65 kHz ± 1 dB
• Harmonic distortion:
  • < 0.2% at 1 W
  • < 2% at nominal power
• Signal-to-noise ratio: 90 dB - 95 dB (A-weighted)
• Input sensitivity: 260 mV (EL34)
• Input impedance: 100 kΩ
• Output impedance: 4 and 8 Ω

Tube Configuration

• 2 × 12AX7 tubes
• 2 × 12AU7 tubes
• 4 × EL34 power tubes

Connectivity

• 4 stereo RCA inputs
• Outputs: 4 and 8 Ω, recording, 6.35 mm headphone

Physical Characteristics

• Dimensions (W × H × D): 28 × 19 × 40.4 cm
• Weight: 22 kg
• Power consumption: 280 W
• Slim remote control included

Warranty

• Device: 2 years parts and labor
• Tubes: 3 months