Ray Tubes Select EL34

Ray Tubes Select EL34 – a British classic at its finest

Only the top 4–5% make the cut

The Ray Tubes Select EL34 is one of the most widely used output valves in high-end audio — deployed as the output stage in push-pull valve amplifiers, where it bears full responsibility for the amplifier's power output. Fewer than 5% of any production batch earn the Select designation. Consequently, this tube delivers a clearly audible improvement over standard new production alternatives, even in amplifiers at the upper end of the market. Tube rolling with the Ray Tubes Select EL34 is therefore one of the most impactful upgrades you can make to a valve amplifier.

A British legacy with real sonic substance

Introduced by Mullard in 1955, the EL34 quickly became the preferred output valve of British amplifier manufacturers including Marshall and Vox. Furthermore, it has remained a reference point in high-end audio for decades — valued for its powerful bass, rich midrange, and clear treble. Since its introduction, the EL34 has been the power pentode of choice for audiophile push-pull amplifier designers worldwide. Ray Tubes brings this classic to a new level with contemporary manufacturing methods and a rigorous selection process.

Sound character: powerful, balanced, and detailed

The Select EL34 delivers powerful bass and rich mid-to-high frequencies — above all suited to listeners seeking balanced and detailed sound across a wide range of musical genres. Low frequencies are solid and layered, thereby preserving structure and definition even in complex recordings. Consequently, this tube excels with rock, jazz, and large-scale classical compositions. Warm and full-bodied in the midrange, it renders vocals and acoustic instruments with convincing weight and texture, while the treble remains clear and transparent without harshness. Moreover, Ray Tubes' strict selection process results in an exceptionally low noise floor — allowing subtle musical details to emerge that standard tubes simply obscure.

Gold pins and long-term reliability

Every tube is hand-selected and features gold pins, offering superior conductivity and oxidation resistance compared to standard materials — thereby ensuring a stable, lasting contact in the valve socket. Each tube arrives in protective packaging with a user handbook covering burn-in guidelines and a certificate of authenticity. The 12-month warranty against manufacturing defects is a rarity for a power pentode and reflects Ray Tubes' confidence in the durability of their product.

Specifications

• Tube type: EL34
• Socket: 8-pin (Octal)
• Amplification factor (µ): 11
• Transconductance: 11 mA/V
• Internal resistance: 15 kΩ
• Max. anode dissipation: 25 W
• Max. screen dissipation: 8 W
• Max. anode voltage: 800 V
• Max. screen voltage: 500 V
• Power output Class A1 (single tube): >10 W
• Power output Class AB1: >35 W
• Heater voltage: 6.3 V
• Heater current: 1.5 A
• Available as: single, matched pair, or matched quad
• Warranty: 12 months against manufacturing defects

Frequently asked questions

What sets the Ray Tubes Select EL34 apart from other new production EL34 valves?

Ray Tubes assesses every Select tube individually for sound profile, dynamics, microphonics, gain, and transconductance — supplemented by listening sessions under real-world conditions by experienced audio engineers. Fewer than 5% of the production batch meet these criteria. The Select EL34 consequently offers a consistency and sonic quality that standard new production alternatives simply cannot match.

Which amplifiers are compatible with the Ray Tubes Select EL34?

The EL34 is a standardised power pentode compatible with all EL34 valve amplifiers and push-pull output stages. Ray Tubes provides a comprehensive compatibility list on their website. Feel free to contact us for tailored advice on your specific amplifier.

How long does the Ray Tubes Select EL34 need to burn in?

Ray Tubes recommends a burn-in period of approximately 40 hours before the tube reaches its full sonic potential. The sound therefore continues to open up and fill out over the first days of use. Detailed burn-in guidelines are included in the user handbook supplied with every tube.