Description
PrimaLuna EVO 100 Integrated Valve Amplifier
The PrimaLuna EVO 100 Integrated Valve Amplifier brings the distinctive musical qualities of traditional valve amplification to modern high-fidelity audio systems.
Combining four EL34 output valves, premium custom-designed transformers, hand-wired circuitry and PrimaLuna’s proprietary Adaptive AutoBias technology, the EVO 100 is engineered to deliver natural vocals, rich tonal detail and an engaging stereo listening experience.
Delivering 40 watts per channel, this beautifully constructed integrated amplifier is an excellent choice for music enthusiasts looking to experience genuine valve amplification without the complexity often associated with traditional valve equipment.
Premium EL34 Valve Amplification
The EVO 100 features a carefully engineered push-pull valve amplifier design using four EL34 output valves.
The standard valve configuration delivers 40 watts per channel, providing a refined, detailed and expressive musical presentation when paired with suitable loudspeakers.
The EL34 is renowned among valve enthusiasts for its natural midrange reproduction, making the EVO 100 particularly appealing for vocals, acoustic instruments, jazz, classical music and high-quality stereo recordings.
PrimaLuna Adaptive AutoBias Technology
PrimaLuna’s proprietary Adaptive AutoBias system continuously monitors and automatically adjusts output valve bias.
This advanced technology helps maintain appropriate operating conditions without requiring regular manual bias adjustments.
The system also incorporates protection circuitry and a bad-valve indicator to help identify an output valve requiring replacement.
Premium Custom-Designed Transformers
The EVO 100 incorporates custom-designed output transformers and a substantial toroidal power transformer.
These carefully engineered components contribute to the amplifier’s wide frequency response, low noise and controlled musical performance.
The power transformer is housed and encapsulated to help reduce mechanical vibration and unwanted electrical interference.
Traditional Point-to-Point Wiring
PrimaLuna uses traditional point-to-point wiring in its valve amplifiers.
This construction technique combines carefully selected audio components with substantial internal wiring and meticulous assembly.
The result is a robust amplifier designed for long-term musical enjoyment and serviceability.
SoftStart Technology
PrimaLuna’s SoftStart circuitry gradually brings the amplifier into operation.
This helps reduce thermal shock to sensitive valves and components, supporting reliable operation and extended component life.
Compatible Alternative Output Valves
The EVO 100 is supplied with four EL34 output valves.
Its Adaptive AutoBias circuitry also allows the use of selected compatible alternative output valves, including KT88 valves.
With KT88 output valves, the EVO 100 is rated at approximately 41 watts per channel.
Alternative valves must be compatible with the amplifier and installed according to PrimaLuna’s instructions.
High-Quality Analogue Connectivity
Four stereo RCA inputs allow connection of compatible analogue audio sources, including:
- Network music streamers
- External DACs
- CD players
- Phono preamplifiers
- Other line-level hi-fi components
The EVO 100 is a traditional analogue integrated amplifier and does not incorporate a built-in network streamer or digital-to-analogue converter.
Dedicated Headphone Listening
A 6.35mm headphone output allows the EVO 100 to be used for private listening with compatible headphones.
This provides an additional way to enjoy the distinctive characteristics of valve amplification.
Optional Phono Stage
An optional PrimaLuna MM PhonoLogue phono module can be fitted for compatible moving-magnet turntable systems.
Alternatively, an external phono preamplifier can be connected to one of the amplifier’s standard line-level inputs.
The phono module is an optional accessory and is not included as standard.
Premium Construction & Finish
The EVO 100 features a substantial ventilated steel chassis, carefully finished front panel and premium internal components.
Its elegant appearance complements both traditional and contemporary hi-fi systems.
Black and silver finish options are available, subject to supplier availability.
Key Features
- Premium integrated stereo valve amplifier
- 40 watts per channel with EL34 output valves
- Four EL34 power valves
- Two 12AX7 and two 12AU7 small-signal valves
- PrimaLuna Adaptive AutoBias technology
- Automatic output valve bias adjustment
- Bad-valve indication and protection circuitry
- Custom-designed output transformers
- Toroidal power transformer
- Traditional point-to-point wiring
- SoftStart circuitry
- Four stereo RCA inputs
- Stereo tape output
- Dedicated headphone output
- 4Ω and 8Ω loudspeaker connections
- Optional MM phono stage
- Remote control
- Premium ventilated steel chassis
- Black or silver finish options
Complete Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | PrimaLuna |
| Model | EVO 100 Integrated |
| Product type | Integrated stereo valve amplifier |
| Amplifier configuration | Push-pull valve amplification |
| Standard output valves | 4 × EL34 |
| Small-signal valves | 2 × 12AX7 and 2 × 12AU7 |
| Total supplied valves | 8 |
| Output power with EL34 | 2 × 40W |
| Output power with KT88 | 2 × 41W |
| Valve bias system | Adaptive AutoBias |
| Frequency response | 10Hz–32kHz ±1dB |
| Extended frequency response | 10Hz–75kHz ±3dB |
| Total harmonic distortion | Below 0.2% at 1W; below 2% at rated power |
| Signal-to-noise ratio | 90dB with EL34; 91dB with KT88 |
| Input impedance | 100kΩ |
| Input sensitivity with EL34 | 260mV |
| Input sensitivity with KT88 | 280mV |
| Maximum gain with EL34 | 37dB |
| Maximum gain with KT88 | 37.5dB |
| Analogue inputs | 4 × stereo RCA pairs |
| Analogue outputs | Stereo RCA tape output |
| Headphone output | 6.35mm jack |
| Loudspeaker outputs | 4Ω and 8Ω transformer taps |
| Damping coefficient | 4 at 1kHz |
| Phono stage | Optional MM PhonoLogue module |
| Power consumption with EL34 | 270W |
| Power consumption with KT88 | 280W |
| Construction | Ventilated steel chassis |
| Available finishes | Black and silver |
Dimensions & Weight
| Measurement | Specification |
|---|---|
| Width | 280 mm |
| Height | 190 mm |
| Depth | 405 mm |
| Dimensions (W × H × D) | 280 × 190 × 405 mm |
| Net weight | 18 kg |
| Shipping weight | 21 kg |
| Shipping dimensions | 385 × 315 × 468 mm (W × H × D) |
Installation Considerations
The PrimaLuna EVO 100 is a valve amplifier and requires adequate ventilation during operation.
We recommend placing it on a strong, stable equipment shelf with sufficient clearance above and around the chassis.
As valve amplifiers generate heat during operation, the unit should not be installed inside a tightly enclosed cabinet.
Always connect suitable loudspeakers to the appropriate impedance terminals and follow the manufacturer’s operating instructions.
Recommended Applications
The PrimaLuna EVO 100 is particularly suitable for:
- Premium two-channel stereo systems
- Dedicated hi-fi listening rooms
- High-quality bookshelf and floorstanding loudspeakers
- Audiophile vinyl playback systems
- CD players and network music streamers
- Music enthusiasts exploring valve amplification
- Traditional and contemporary residential hi-fi installations
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
- High-performance loudspeaker demonstrations
- Professional installation and system optimisation
- Home cinema and smart home integration
Whether you’re discovering valve amplification for the first time or upgrading an existing hi-fi system, Riverside HiFi can help you select the ideal equipment.
Riverside HiFi – Hi-Fi | Home Cinema | Smart Home | Professional Installation
