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

The EML AD1/350 Mesh is a high-end vacuum tube that recreates the sound quality and beauty of the classic AD1 vacuum tube, but with improvements that make it ideal for the modern audiophile. and features a highly efficient design that reduces heat dissipation while extracting additional output power. While previous AD1s could experience grid currents at higher operating voltages, the EML AD1/350 uses the latest technology to eliminate this problem, providing stable performance for extended periods of time at any operating point.

This tube is characterized by a soft, silky sound quality that further accentuates the delicate expressiveness of vocals and stringed instruments, and the distinctive, elegant, rich sound of 4V directly heated triodes from the 1930s and 1940s provides a more subdued yet profound musical experience than the 2A3. According to German tube researcher Rainer Zur Linde, "The AD1 is the pinnacle of the European DHT triode and marks the end of its production era. This AD1 is truly a crystallization of history and technology.

Furthermore, the EML AD1/350 Mesh uses gold plate grid technology to thoroughly suppress grid current. The AD1/350 Mesh is resistant to the aging characteristic of vacuum tubes and maintains its beautiful sound over a long period of time. Vintage 8-pin "side contact" and 4-pin UX4 bases are available for high compatibility suitable for your particular amplifier configuration.

For those who want to take good old fashioned sound to the extreme, the EML AD1/350 Mesh is the perfect choice.

• Gray wire mesh anodes mounted on a rigid metal frame for maximum stability.
• Gold plated Wolfram Grid.
• Soft Rubber Suspended Tube Base
• Cathode Tap Filament
• Slow-start filaments for maximum life
• Anode voltage up to 350V
• Continuous use with maximum anode dissipation
• Carbide alloy construction.Philips and Tungsram's historic AD1 vacuum tubes often develop grid current and gas problems after the first 500 hours of use. In contrast, EML tubes have excellent tube bias stability and grid currents well below 1uA.
• Tubes printed with real gold (metal), the red color is glass baked into the glass.

EML AD1 Filament Rating

EML AD1 maximum conditions (Simultaneous not allowed)