Emission Labs EML AD1/ 350-M Mesh Plate Heater Current 1.5A Type Matched Pair

EML AD1/350 Mesh is a high-end vacuum tube that reproduces the sound quality and beauty of classic AD1 vacuum tubes and is ideally improved for modern audio enthusiasts. Designed based on Telefunken's high-quality model, it can accommodate 250V operating voltage as well as up to 350V, realizing a high efficiency design that reduces the amount of heat dissipation while pulling out additional output. In conventional AD1, grid current can occur at high operating voltages, but EML AD1/350 eliminates this with the latest technology, providing stable performance at any operating point for a long time.

This vacuum tube features a soft and silky sound quality, further enhancing the delicate expressiveness of vocals and string instruments. The elegant and rich sound of 4V direct heating trilateral tubes in the 1930s and 40s provides a modest yet profound musical experience compared to 2A3. According to German vacuum tube researcher Reiner Zer Linde, "AD1 is the pinnacle of the European DHT tripole and marks the end of its manufacturing era." This AD1 is a crystal of history and technology.

In addition, EML AD1/350 Mesh uses gold plate grid technology to thoroughly reduce grid current. It is strong against the aging of the vacuum tube and maintains beautiful sound for a long time. Vintage 8-pin "side contact" and 4-pin UX4 base are available, and it has high compatibility suitable for a particular amplifier configuration.

For those who want to pursue the sound of good old times to the extreme, EML AD1/350 Mesh is the best choice.

• Gray wire mesh anode mounted on hard metal frame for maximum stability.
• Gold-plated Wolfram Grid.
• Soft Rubber Suspended Tube Base
• Cathode Tap Filament
• Slow start filament for maximum lifetime
• Maximum anode voltage 350V
• Continuous use with maximum anode dissipation
• Ultra hard alloy structure.The historic AD1 vacuum tubes of Philips and Tungsram often cause grid current and gas problems after the first 500 hours of use. In contrast, EML vacuum tubes have excellent vacuum tube bias stability, and grid current is far below 1uA.
• Tube printing using real gold (metal), red is glass baked to glass.

EML AD1 Filament Rating

EML AD1 Maximum Conditions (No simultaneous)