PrimaLuna EVO 400 Tube Power Amplifier

Free Shipping
On Sale
  • PrimaLuna EVO 400 Tube Power Amplifier
  • PrimaLuna EVO 400 Tube Power Amplifier
Now: $5,995.00
RRP: $7,745.00


PrimaLuna EVO 400 Tube Power Amplifier 

It has been nearly a decade since PrimaLuna has introduced an entirely refreshed product line of valve amplifiers and you will find the new EVO series shares the previous line’s DNA. The new products feature upgraded transformers and internal components, improved aesthetics and an enhanced features set including true-balanced, transformer-coupled XLR inputs and outputs on upper-end models. Just as importantly is what hasn’t changed, including the meticulous hand-assembly, point-to-point wiring, superlative build quality and cutting-edge Adaptive Auto-Bias (TM) circuitry upon which PrimaLuna has built its reputation.

PrimaLuna EVO Tube Poweramplifiers feature:


  • Hand-made construction of a heavy-gauge, fully-vented steel chassis with a five coat finish, each coat hand-rubbed and polished, holding the finest point-to-point wiring, using workmanship that is normally only available at the highest price.
  • Elegant style, heavy-metal remote controls for models that feature UL/TR choice.
  • Premium parts that include toroidal and EI transformers for power supply; custom designed -in conjunction with one of the most prestigious transformer designers in the USA- encapsulated output transformers for lowest hum; wide bandwidth for great bass and extended highs; ceramic tube sockets; Nichicon and DuRoch capacitors; superfast Philips-rectifier-circuitry; gold-plated heavy-duty WBT style speaker terminals (all speaker connectors are solid shaft for better conductance, better sound, and higher reliability); gold-plated panel mounted RCA and XLR input and output jacks.
  • The newest generation Adaptive Auto Bias™ exclusive to PrimaLuna. This circuit monitors and smoothly adjusts bias constantly and instantly, reducing maintenance and increasing performance due to the dramatic reduction in distortion. It comes with a new extensive output stage protection circuitry with +B relay to protect output transformers, resistors and high voltage power supply in case a tube fails.
  • The EVO Tube Poweramplifiers come with a High/Low bias switch. This means that with the flip of a switch you can choose for the optimum bias setting for EL34 type of tubes or KT88 type of tubes. No hassle with screwdrivers, no messing around with meters etc. Just switch tubes, switch bias!
  • All PrimaLuna power transformers include the  PTP™ (Power Transformer Protection) circuit. When the power transformer overheats due to environmental circumstances, overloading or some problem in the unit, an internal thermal switch breaks the primary, allowing the unit to cool down before harm is done. After it’s cooled, contact is restored and if nothing is broken, the amp will repower and function properly.
  • All EVO Poweramplifiers come with a mono/stereo switch giving it a stereo and mono function.
  • LIVE side of the AC input connector indicated by aluminium color screw.
Power UL 70 / 72 / 85 / 89 Watts Stereo per channel; 140 / 145 / 175 / 188 Watts Mono
Power TR 38 / 43 / 45 / 51 Watts Stereo per channel; 82 / 88 / 94 / 109 Watts Mono
Frequency Response

9 Hz – 60 kHz +/- 1 dB

8 Hz – 70 kHz +/- 3 dB
THD with AABB < 0.1% @ 1W; less than 2% at rated power
S/N Ratio 95 dB – 105 dB A Weighted
Input Impedance 100 kOhm
Input Sensitivity 1100 mV for rated power at max volume setting
Maximum Gain UL 27 dB / 26.5 dB / 26.5 dB / 26 dB; 30 dB / 30 dB / 30 dB / 30 dB
Maximum Gain TR 25.5 dB / 24 dB / 24 dB / 24 dB; 28 dB / 27 dB / 27 dB / 27 dB
Power Consumption 470 Watts / 480 Watts / 540 Watts / 550 Watts

Net weight: 68.2 lbs / 31 kg

Shipping Weight:     79.2 lbs / 36 kg
Dimensions 15.9" x 15.2" x 8.1" / 405 mm x 385 mm x 205 mm (L x W x H)
Shipping Dimensions 22.7" x 18.4" x 12.4" / 577 mm x 468 mm x 315 mm (L x W x H)
Inputs 1 pair Stereo RCA & XLR, 1 piece Mono RCA & XLR
Outputs 4, 8 & 16 Ohm / 2, 4 & 8 Ohm Speaker Taps
Tube Complement 8 x EL34, 6 x 12AU7
Damping Coefficient 7 KD (1 kHz)
View AllClose