Emission LabsEML 5U4GM Mesh plate 1 piece
Product code:Emission LabsEML 5U4GM Mesh plate 1 piece
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Same standard as CA5U4G
Direct replacement for the historic 5U4G or 5Z3
Mesh plate rectifier tube that inherits the spirit of the historic 5U4G
Emission Labs (EML) 5U4GM(mesh plate) is designed as an electrically identical replacement for the historic 5U4G and 5Z3 rectifier tubes. 5U4G-MeshOctal SocketWhile the 5Z3-Mesh uses a 4-pin UX4 socket, this EML tube shares the characteristics of both. **Mesh plate (mesh anode)** structure provides sophisticated sound quality with less noise.
Amplifier protection with slow start function
EML rectifier tubes are similar to most NOS (new old) rectifier tubes.Slow start functionEquipped with: This has the effect of reducing and protecting the entire amplifier, especially the other tubes and capacitors, when the power is turned on. The design has an initial function delay time of 2 seconds and a maximum current delay time of 7 seconds, contributing to long-term stable system operation.
Unique elements that support stable operation
Inside the tube glass, there is aspecial elementContains. These elements help protect the heater from accidental overvoltages by increasing resistance when higher currents are applied. The filaments are also connected in series for optimal symmetry between the two internal diodes.
High reliability and precise reproduction sound
This rectifier tube features attention to detail in every detail, including two oversized getters that flash across the bottom, real gold tube printing, and a numbered metal tag. These high reliability stabilize the power supply of the amplifier,Dense, low-noise playback sound brought about by the mesh structureRealize.
filament rating
| filament voltage | 5 volts (AC or DC) |
|---|---|
| Filament voltage tolerance | 5% |
| filament current | 3Am |
Maximum rating(Cannot be done at the same time)
| AC input voltage | 550V |
|---|---|
| DC Output Current |
225mA with capacitor 265mA with choke |
| First capacitor connected to the anode | 40uF |
| Total copper resistance of the complete HV winding |
Must not be below 170 ohms on curves 1 to 6 Must not be below 230 ohms on curves 7 to 8 |
Soundstage Expression with Mesh Plate
- When I tried replacing it with a rectifier tube featuring a mesh plate, the first thing I noticed was the expansion of the soundstage. In particular, the openness of the mid to high range stood out, giving the impression that the sound naturally blends into the space. The light and clear resonance, different from that of a solid plate, is very pleasant.
- The tonal quality itself is neutral and free of character, but it is rich in information. Thanks to EML's low-noise design, subtle nuances are clearly expressed, and the transparency of the sound feels significantly enhanced.
Power Stability and Low Noise
- Power supply noise (ripple) is extremely low, noticeably improving the S/N ratio of the entire amplifier. The depth of the background quiet makes the sensation of sound rising from silence extremely enjoyable.
- Stable current supply improves low-frequency resolution and increases control. The bass is tight, adding dynamics and strength to the overall sound, allowing the energy of the music to be conveyed more directly.
