An all-tube line-level preamplifier from PrimaLuna's EVO range. The EVO 300 has five RCA inputs and a home theater input, a motorised ALPS volume control, two 5AR4 rectifier tubes and a full remote control. It has no internal DAC.
PrimaLuna says all of its preamplifiers use a dual-mono design, so each one is two preamplifiers in one chassis, with tube rectification and point-to-point hand wiring. PrimaLuna builds the chassis from heavy-gauge, fully vented steel with a five-coat finish, each coat hand-rubbed and polished.
This listing offers Black and Silver finishes, with a choice of no phono stage or an MM Phono Stage. PrimaLuna says an MM PhonoLogue board is an optional extra for the EVO preamplifiers.
Why you will love it
Dual-mono, tube-rectified design
PrimaLuna says all of its preamplifiers are dual mono, which means two discrete preamplifiers in one box with separate power transformers for the left and right channels. It says this is where the imaging comes from.
The EVO 300 uses two 5AR4 rectifier tubes. Its tube complement is 2 x 5AR4, 6 x 12AU7. PrimaLuna says its Silver Label tubes are pre-selected using its 60 out of 100 rule.


Relay input selection and motorised volume
PrimaLuna says input selection uses sealed relays mounted at the rear, where you plug in your sources, instead of a front-panel switch. It says only the selected relay closes, so the other inputs are left open.
Volume is a motorised ALPS potentiometer. PrimaLuna describes it as the ALPS Blue Velvet and says it tracks well and stays quiet.
Takman resistors, DuRoch capacitors and AC Offset Killer
PrimaLuna says the EVO 300 uses Takman resistors from Japan and DuRoch tinfoil capacitors in the critical signal paths, and Swiss-made silver-plated OCC copper wiring with a Teflon dielectric.
PrimaLuna also lists its AC Offset Killer on this model. It says the circuit is designed to lower transformer noise, whatever the quality of the mains supply.
Hand wiring and protection circuits
PrimaLuna says the signal path, including the resistors and capacitors, is hand wired point to point with heavy-gauge cable.
Its SoftStart circuit is there to extend the life of sensitive parts and reduce the chance of tube failure from thermal shock. Each power transformer has PTP (Power Transformer Protection), a thermal switch that opens the primary if the transformer overheats. The main outputs are muted for 60 seconds while the tubes warm up.
Low gain
The EVO 300 has 9.7 dB of gain. PrimaLuna calls its low-gain approach SmartGain and says it keeps noise down, because a preamplifier is usually lowering the level from the source rather than adding to it.
The input sensitivity for rated output at maximum volume is 650mV.

Connections
Inputs: 5 pairs stereo RCA, 1 pair home theater input. Outputs: 1 pair RCA tape, 2 pairs stereo RCA.
PrimaLuna's stereo home theater pass-through takes the front left and right preamp outputs from an AV processor or receiver. When you select the HT input, the preamplifier section is taken out of the signal path and volume is set by the processor.
Remote control and phono option
The full remote controls source selection, volume and mute. PrimaLuna says its remotes are made of heavy metal.
PrimaLuna says every EVO preamplifier has a 100% shielded phono chassis on the bottom plate for its optional MM PhonoLogue board. The board takes the place of the AUX 2 input. PrimaLuna says the preamplifier has no internal DAC and no phono stage as standard.
Is it right for you?
A great fit if you…
- Want a tube preamplifier with a dual-mono design
- Already have, or plan to buy, a power amplifier
- Want five line-level inputs and a home theater pass-through
Worth knowing
- Weighs 24kg and measures 405 × 385 × 205 mm (L × W × H)
- It is a line-level preamplifier, so it needs a power amplifier and speakers
- Optional MM phono board takes the place of the AUX 2 input
- Tubes wear out. PrimaLuna gives 5,000 to 10,000 hours for the 12AU7 tubes as a guide
- Switch off and unplug before changing tubes or fuses
Build your system
A preamplifier needs a power amplifier and speakers.
- Power amplifier: Add a PrimaLuna power amplifier such as the PrimaLuna EVO 300 tube power amplifier, or browse power amplifiers.
- Phono and digital: PrimaLuna sells a separate phono stage and DAC: see the PrimaLuna EVO 100 tube phono preamplifier and PrimaLuna EVO 100 tube digital to analogue converter.
- Compare the range: Also see the PrimaLuna EVO 100 tube preamplifier, PrimaLuna EVO 200 tube preamplifier and PrimaLuna EVO 400 tube preamplifier.
Specifications
Audio
| Output | 2V per channel |
|---|---|
| Frequency response | 18Hz - 38kHz ±1dB; 12Hz - 75kHz ±3dB |
| THD | < 0.5% at 2V |
| S/N ratio | 93dB (98dB A-weighted) |
| Input impedance | 220kΩ |
| Input sensitivity | 650mV for rated output at maximum volume |
| Gain | 9.7 dB |
| Output impedance | 256Ω |
Connections
| Inputs | 5 pairs stereo RCA, 1 pair home theater input |
|---|---|
| Outputs | 1 pair RCA tape, 2 pairs stereo RCA |
| Remote control | Full |
Tubes
| Tube complement | 2 x 5AR4, 6 x 12AU7 |
|---|
Power, size and weight
| Power consumption | 61W |
|---|---|
| Dimensions | 405 × 385 × 205 mm (L × W × H) |
| Net weight | 24kg (52.8 lb) |
Finish
| Finish options on this listing | Black, Silver |
|---|---|
| Phono options on this listing | None, MM Phono Stage |
Specifications from PrimaLuna (EVO tube preamplifier manual v2.5 and the PrimaLuna EVO 300 product page), checked November 2026.
What is in the box
- PrimaLuna EVO 300 Tube Preamplifier
- Remote control
- Power cord
- Owner's manual
- White gloves
- Spare mains fuse
Questions people ask
Does the EVO 300 have a built-in phono stage?
PrimaLuna says there is no phono stage as standard. It has a shielded phono chassis for an optional MM PhonoLogue board, which takes the place of the AUX 2 input.
Does the EVO 300 have a DAC?
No. PrimaLuna says it does not build a DAC into its preamplifiers.
What tubes does the EVO 300 use?
2 x 5AR4, 6 x 12AU7.
What inputs does it have?
5 pairs stereo RCA, 1 pair home theater input.
Does it have a home theater input?
Yes. The HT input is a pass-through that takes the preamplifier section out of the signal path, so volume is set by your AV processor.