Emission Labs EML AD1/ 350-M Mesh plate heater current 1.5A type matched pair

The ultimate vacuum tube that combines history and innovation: AD1/350 mesh plate

Emission Labs (EML) AD1/350 Mesh is a high-end triode that recreates the sound quality and beauty of the classic Telefunken AD1 vacuum tube, but has been improved with modern technology. Unique to 4V direct heating triodes of the 1930s and 1940s.elegant and rich soundWhile inheriting themesh plateThe result is soft, silky sound quality and excellent expressive power. The delicate nuances of vocals and stringed instruments stand out even more, providing a profound musical experience.

Compatible with high voltage (350V) and stability

While the conventional AD1 was based on 250V operation, the EML AD1/350Compatible up to 350VRealizes a highly efficient design. It adapts to a wider range of amplifier configurations by reducing heat dissipation while drawing additional output. The latest technology eliminates grid current generation at high operating voltages, which was a concern with the conventional AD1. For extended periods of time at any operating pointstable performanceWe provide

Advantages of mesh anode and gold plate grid

The biggest feature of this machine is the graywire mesh anodeandGold plated Wolfram GridIt is a combination of The mesh anode suppresses unnecessary resonance and thoroughly eliminates muddy sound. This results inMusic playback with high transparency and depthenable. Gold plated grid technology suppresses grid current and is resistant to aging, which is typical of vacuum tubes, maintaining beautiful sound over a long period of time.

High compatibility and long life design

Soft rubber suspended tube base, cathode tap filament, and maximum lifespanslow start filamentadopted. The cemented carbide construction eliminates the grid current and gas problems that often occur with vintage tubes, and provides excellent bias stability. It is also compatible with vintage 8-pin "side contact" and 4-pin UX4 basses, making it highly compatible with particular amplifier configurations.

EML AD1 filament rating

EML AD1 maximum conditions ((Cannot be used at the same time)

A feeling of openness in the sound field due to the mesh plate

• The moment I switched to the mesh plate AD1, I felt that the sound field had a much wider and three-dimensional feel. Although the localization is solid, the sound seems to naturally spread out into the space, giving the impression that the sound field is wide open. There is no blockage in the sound, and the sense of openness that expands smoothly is very comfortable.
  
• The details of the sound are very delicate, and the sense of transparency is even higher. In particular, the extension of the mid-high range is natural and beautiful, and even the smallest nuances are vividly depicted, yet the sound remains soft to the ear. Another good point is that there is no excessive stimulation.
  

High power and stability

• Another big appeal is that it maintains the delicate and beautiful tone typical of the AD1, while adding solid driving force. smalloutput tubeEven with the speakers that couldn't produce the full sound, the braking force increased, the outline became clearer, and I felt that the overall energy of the music was raised.
  
• The noise level is extremely low, and the way the sound rises from the silent background is amazing. There is almost no hum noise or microphonic noise, and it is clear that the high S/N ratio supports the reproduction of minute information.
  

Attention to compatibility and design

• Faithfully reproducing the AD1's unique 1.5A filament structure while incorporating the characteristics of the $350 ext{B}$, you can see the careful design philosophy typical of EML throughout. The distinctive, beautiful glow when the mesh plate lights up is also appealing, making this tube not just sound good, but also a joy to own.