Emission Labs 45 Rør - Parret par/2 stk.

45 years after the last American tubes of 'Type 45' were made, EML has taken this tube back in production again. They have 4 four original V-shaped filaments like found in vintage 45 tubes. (See note4) This tube has fully original specifications of the American RCA Type. All critical parts are made of hard metal for higher reliability and reproducible quality.

Several other versions excist. We have a solid plate version, the 45M (mesh) version, and the new 45B, which can be used to achieve higher output power.

Features
Nano Ampere range grid current, vs NOS tubes which can have sometimes 2uA.
Center tapped filament
30% lower distortion compared to any other 45. Read here.
Hard metal Construction (Note1)
Two extra large getters
Hand blown Glass bulb
Anti-microphonic Anode- 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

Sound Character of the EML 45
We are often asked to describe the sound of our 45 tubes. If you are looking for real triode sound, the 45 tube is very interesting. It is important that tubes and speakers fit together well. So low power tubes sound best at high efficiency speakers, and vice versa. Best sound of the 45 is developed at the very sweet first Watt. The 45 will reward you with best sound when you are using high efficiency speaker systems, starting at 96..99dB. At the same time, here comes a drawback for the amplifier and the tubes as well. Such speaker systems of 100dB and above will make smallest imperfections audible, and the amplifier must produce as little hum and noise as can be. This is difficult. When you are thinking of 108db horn systems this stresses the design limits of tubes and amplifiers a lot. A quick way to test the noise level of your amplifier-tube combination is, to measure the AC signal out of the amplifier with the inputs muted, but the speaker connected. Anything below 3 millivolt at 8 Ohms is a good achievement, and such an amplifier below 1 millivolt can be called a fine piece of work. If an amplifier will produce low hum with many different tubes, this is definitely a better design, than such an amplifier that is critical on the tubes. Of course, here the tubes play a major role too. At EML we have greatly reduced hum and distortion of all tubes, by a new filament construction. This was done by a real, physical filament center tap, that is positioned outside of the Anodes, but inside the glass bulb. The result was, we reduced the hum level of the EML45 even below that of many good NOS tubes.

Mere information HER