The modern 300B stands at the pinnacle of vacuum tubes.
German-made high-performance 300B vacuum tubes for ultimate musicality and resolution
ELROG's ER300B is the ultimate tube audio amplifier.output tubeThis is a modern reinterpretation of the highly acclaimed 300B vacuum tube. Manufactured in Germany, the ER300B is a product that incorporates the maximum of ELROG technology and quality, and is characterized by excellent musicality and high resolution.

Thanks to ELROG's high-precision design and manufacturing technology, the ER300B achieves low noise and low distortion, reproducing every nuance of music, from rich, powerful bass to delicate treble. In particular, it combines the warm tones unique to vacuum tubes with compatibility with modern audio equipment, and demonstrates its expressive power in all genres, from classical to jazz to rock.

Additionally, since the ER300B is designed as a 300B compatible vacuum tube, it can also be used with existing 300B amplifiers, making it easy to experience the unique sound of ELROG.
| filament voltage | 5V |
|---|---|
| filament current | 1.2A |
| amplification factor | 3.3 |
| mutual conductance | 3.3mS |
| plate resistance | 950Ω |
| maximum plate voltage | 600V |
| maximum plate loss | 40W |

With these specifications, the ER300BHigh-FidelityDemonstrates excellent performance and reliability in audio applications. Due to their high plate loss and voltage tolerance, they can reliably handle even the most demanding audio signals, providing a rich and authentic sound experience, making them a favorite among audiophiles.









