Description
PrimaLuna EVO 300 Integrated Valve Amplifier
The PrimaLuna EVO 300 Integrated Valve Amplifier is a premium all-valve stereo amplifier combining traditional valve musicality with sophisticated modern engineering, exceptional build quality and outstanding system flexibility.
Positioned between the EVO 200 and flagship EVO 400, the EVO 300 features four EL34 output valves, six 12AU7 small-signal valves, custom-designed output transformers and PrimaLuna’s proprietary Adaptive AutoBias technology.
With selectable ultralinear and triode operation, premium point-to-point wiring and versatile analogue connectivity, the EVO 300 is designed for discerning music enthusiasts seeking natural vocals, rich tonal detail, expansive soundstaging and an engaging listening experience.
Premium EL34 Valve Amplification
The EVO 300 uses a carefully engineered push-pull valve amplifier design, delivering:
- 42 watts per channel in ultralinear mode
- 24 watts per channel in triode mode
Ultralinear operation offers greater output power and dynamic authority, while triode operation provides an alternative presentation appreciated by listeners seeking a different tonal character.
Both modes can be selected using the supplied remote control.
PrimaLuna Adaptive AutoBias Technology
PrimaLuna’s proprietary Adaptive AutoBias system automatically monitors and adjusts output valve bias during operation.
This eliminates the need for routine manual bias adjustments and helps maintain suitable valve operating conditions.
The system also allows compatible alternative output valves to be installed, offering additional flexibility for valve enthusiasts.
Compatible Output Valve Options
The EVO 300 is supplied with four EL34 output valves but also supports selected alternative valve types.
| Output valves | Ultralinear power | Triode power |
|---|---|---|
| EL34 – standard | 2 × 42W | 2 × 24W |
| KT88 | 2 × 43W | 2 × 25W |
| KT120 | 2 × 45W | 2 × 27W |
| KT150 | 2 × 48W | 2 × 30.5W |
Alternative valves are available separately and must be installed according to PrimaLuna’s compatibility instructions.
Premium Custom-Designed Transformers
The EVO 300 incorporates substantial custom-designed output transformers engineered for wide frequency response, low distortion and controlled bass reproduction.
A high-quality power supply supports stable amplifier operation and helps minimise unwanted electrical noise.
These premium components contribute to the amplifier’s substantial 31kg construction.
Traditional Point-to-Point Wiring
The EVO 300 features traditional point-to-point wiring using high-quality internal components.
Its construction incorporates:
- Custom-designed wide-bandwidth output transformers
- Premium power transformers
- Swiss-made internal signal wiring
- High-quality capacitors and resistors
- ALPS Blue Velvet volume potentiometer
- Ceramic valve sockets
- Gold-plated RCA connectors
- Heavy-duty loudspeaker terminals
This carefully engineered construction supports long-term reliability and excellent audio performance.
Remote-Controlled Ultralinear & Triode Switching
The EVO 300 allows the listener to switch between ultralinear and triode operating modes using the supplied remote control.
This provides convenient flexibility when listening to different music genres and recordings.
SoftStart & Valve Protection
PrimaLuna’s SoftStart technology gradually brings the amplifier into operation, helping reduce stress on valves and other sensitive components.
Additional protection features include automatic bias adjustment and bad-valve indication.
Flexible Analogue Connectivity
Five stereo RCA inputs allow connection of a wide range of analogue audio sources, including:
- Network music streamers
- External DACs
- CD players
- Turntables with suitable phono preamplifiers
- Other line-level audio components
The EVO 300 also includes a dedicated home theatre bypass input, allowing integration into a combined stereo and home cinema system.
Dedicated Headphone Amplification
A dedicated headphone output provides high-quality private listening with compatible headphones.
Subwoofer Connectivity
Stereo/mono subwoofer outputs allow the EVO 300 to be integrated with compatible active subwoofers.
This provides additional flexibility for listeners wishing to extend low-frequency performance.
Optional MM Phono Stage
An optional PrimaLuna moving-magnet phono module can be fitted for compatible turntable systems.
Alternatively, a separate phono preamplifier can be connected to one of the amplifier’s standard RCA inputs.
Premium Construction & Finish
The EVO 300 features a substantial ventilated steel chassis with a carefully finished exterior.
Its premium construction, substantial transformers and carefully selected components provide a robust foundation for high-performance music reproduction.
Available in black or silver finishes, subject to stock and supplier availability.
Key Features
- Premium all-valve stereo integrated amplifier
- Four EL34 output valves
- Six 12AU7 small-signal valves
- 42W per channel in ultralinear mode
- 24W per channel in triode mode
- Remote-controlled ultralinear/triode switching
- PrimaLuna Adaptive AutoBias technology
- Compatible with selected alternative output valves
- Premium custom-designed output transformers
- Traditional point-to-point wiring
- Swiss-made internal wiring
- Premium capacitors and resistors
- ALPS Blue Velvet volume control
- SoftStart protection circuitry
- Five stereo RCA line inputs
- Dedicated home theatre bypass input
- Stereo/mono subwoofer outputs
- Tape output
- Dedicated headphone output
- 4Ω and 8Ω loudspeaker connections
- Optional MM phono stage
- Remote control included
- Premium ventilated steel chassis
Complete Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | PrimaLuna |
| Model | EVO 300 Integrated (EVO 300-1) |
| Product type | Integrated stereo valve amplifier |
| Amplifier configuration | Push-pull valve amplification |
| Standard output valves | 4 × EL34 |
| Small-signal valves | 6 × 12AU7 |
| Total supplied valves | 10 |
| Output power, EL34 ultralinear | 2 × 42W |
| Output power, EL34 triode | 2 × 24W |
| Output power, KT88 ultralinear | 2 × 43W |
| Output power, KT88 triode | 2 × 25W |
| Output power, KT120 ultralinear | 2 × 45W |
| Output power, KT120 triode | 2 × 27W |
| Output power, KT150 ultralinear | 2 × 48W |
| Output power, KT150 triode | 2 × 30.5W |
| Operating modes | Ultralinear and triode |
| Valve bias system | Adaptive AutoBias |
| Frequency response | 10Hz–50kHz ±1dB |
| Extended frequency response | 8Hz–75kHz ±3dB |
| Total harmonic distortion | Below 0.2% at 1W; below 2% at rated power |
| Signal-to-noise ratio | 86dB with EL34 valves |
| Input impedance | 100kΩ |
| Input sensitivity, EL34 | 270mV |
| Maximum gain, EL34 | 36.5dB |
| Damping coefficient | 4 at 1kHz |
| Analogue inputs | 5 × stereo RCA pairs |
| Home theatre input | 1 × stereo RCA pair |
| Analogue outputs | Tape and stereo/mono subwoofer |
| Headphone output | 6.35mm jack |
| Loudspeaker outputs | 4Ω and 8Ω transformer taps |
| Optional phono stage | Compatible MM phono module |
| Remote control | Included |
| Power consumption, EL34 | 290W |
| Power consumption, KT88 | 300W |
| Power consumption, KT120 | 330W |
| Power consumption, KT150 | 340W |
| Construction | Ventilated steel chassis |
| Available finishes | Black and silver |
Dimensions & Weight
| Measurement | Specification |
|---|---|
| Width | 385 mm |
| Height | 205 mm |
| Depth | 405 mm |
| Dimensions (W × H × D) | 385 × 205 × 405 mm |
| Net weight | 31 kg |
| Shipping weight | 35 kg |
| Shipping dimensions (W × H × D) | 468 × 315 × 577 mm |
Installation Considerations
The PrimaLuna EVO 300 is a substantial valve amplifier weighing 31kg and requires a strong, stable equipment shelf.
Adequate ventilation must be provided around and above the amplifier because the valves generate heat during operation.
The unit should not be installed inside a tightly enclosed cabinet.
Always connect compatible loudspeakers to the appropriate 4Ω or 8Ω terminals and follow the manufacturer’s operating instructions.
Recommended Applications
The PrimaLuna EVO 300 is particularly suitable for:
- Premium two-channel stereo systems
- Dedicated hi-fi listening rooms
- High-performance bookshelf and floorstanding loudspeakers
- Audiophile vinyl playback systems
- CD players and network music streamers
- Combined stereo and home cinema installations
- Music enthusiasts seeking premium valve amplification
Expert PrimaLuna Advice at Riverside HiFi
At Riverside HiFi, we specialise in premium hi-fi, valve amplification, high-performance loudspeakers and complete music system design.
Our services include:
- Valve amplifier and loudspeaker matching
- Premium stereo system design
- Turntable and phono stage integration
- Network music streamer and DAC selection
- Loudspeaker demonstrations and system optimisation
- Home cinema and smart home integration
- Professional installation and system setup
Whether you’re upgrading an existing stereo system or building a dedicated listening room, Riverside HiFi can help you select the ideal equipment.
Riverside HiFi – Hi-Fi | Home Cinema | Smart Home | Professional Installation
