Not just an replacement, but an improvement!

45 years after the last American tubes of "Type 45" were made, EML can proudly say we were the first company taking this tube back in production again, in the 2001. This tube is constructed for low  microphonics. All critical parts, like filaments and  grids  are made of hard metal for higher reliability and reproducible quality.  They have 4  four original V-shaped filaments like found in vintage 45 tubes. This tube has fully original specifications of the American RCA Type. 

We have now also build a mesh version of this tube, called EML 45-mesh.  It features a mesh window in the plates.  This combines the electrical stability of solid plate tubes, with the non-resonance mesh material. We think this is the most ideal combination for a low power audio tube.

When a tube is given mesh plates, something magic happens to the sound.  We believe this is caused by the better damping properties of the mesh material.  When using mesh tubes, you will experience a more transparent sound stage, meaning a more realistic stereo reproduction of the original sound recording.  With mesh tubes you will enjoy the very best of what small triodes have to offer.  Note: mesh means woven metal wire. The Chinese make a tube with punched plates, and for marketing reasons call this "mesh". A punched plate will not have the superior resonance damping properties a wire mesh tube has. 

• Gold plated Grid
• Center tapped filament
• Gray Wire Mesh
• 30% lower distortion compared to any other 45. Read here.
• Hard metal Construction (Note1)
• Two extra large getters
• Hand blown Glass bulb
• Anti-microphonic plate- and grid  suspension
• These tubes are shipped in a high quality dual box
• Tube printing with real gold (metal),  red color is glass burned into the glass 
• Machined, solid tube base pins for highest contact precision. YAMAMOTO tube sockets highly recommended. 
• Gold plated pins,  black ceramic socket.  (White bottom.)

• Note 1)  Hard-metal filaments prevent filament breakage with DHT Tubes.  This material has a higher melting point than the classical nickel wires. Wolfram grids  allow the most precise grid wire distance, because wolfram is an extreme hard metal.   This ensures better grid  precision, which gives uniformity and better linearity at the low end of the tube curves
• Note 2)  Individual Test data, such as:  Matching Data, Grid Current, Vacuum, Filament Current, etc.,  are on the Certificate that comes with each individual Tube.  Each tube is numbered, inside the bulb  with a metal Tag
• Note 3)  Tube Curves:  Made on the The Sofia Curve tracer, with courtesy of AMR, Wisconsin, USA.
• Note 4) Historical 45 tubes have a maximum dissipation of 11 Watt, which means the maximum voltage and maximum current can not be applied at the same time. Our new type, grey wire mesh 45 (shipped since Q3-2006) has 13,5 Wat maximum dissipation, meaning maximum voltage and maximum current can be applied at the same time. Older types with white mesh have also 11 Watt maximum