New Customer?
Create your accountNo products
Prices are tax included
ELECTRO-HARMONIX 300B Tubes Triodes (Matched Pair)
By buying this product you get 21 loyalty points
Viewed products
![[GRADE A] RME ADI-2 DAC FS Balanced DAC Headphone Amplifier ES9028Q2M 32bit 768kHz DSD256 Black](https://www.audiophonics.fr/60700-thumb_default/rme-adi-2-dac-fs.jpg)
Electro-Harmonix 300B
Tubes Triodes Platinum Matched (Matched pair)
The Electro-Harmonix 300B tube offers long life, high quality design and incredible sonic capabilities. Like the original Western Electric 300B, it features a direct heated 8-track filament with 40W plate dissipation and a large glass. The 300B's plate curves and DC static characteristics also match those of the original, ensuring excellent performance.
The Electro-Harmonix 300B tube is sold here as a matched pair, to ensure the best possible performance.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Tubes |
| Tube type | Triode |
| Number of pins | 4 |
| Dimensions | Ø61.5 x 152mm |
| Electrical parameters | |||
|---|---|---|---|
| Parameter | Condition | Min. | Max. |
| Heater current | - | 1.1A | 1.4A |
| Grid reverse current | Filament voltage = 5V Plate voltage = 450V Grid voltage minus = 97V Resistance in grid circuit = 0.51MΩ | - | 1µA |
| Plate current | Filament voltage = 5V Plate voltage = 303V Grid voltage minus = 58V | 45mA | 90mA |
| Amplification factor | Filament voltage = 5V Plate voltage = 303V Grid voltage minus = 58V | 3 | - |
| Dissipation factor | Filament voltage = 5V Plate voltage = 303V Grid voltage minus = 58V Plate circuit resistance = 2.4kΩ | - | 10% |
| Output power | Filament voltage = 5V Plate voltage = 303V Grid voltage minus = 58V Plate circuit resistance = 2.4kΩ | 5.5W | - |
| Limit values | ||
|---|---|---|
| Parameter | Min. | Max. |
| Filament voltage | 4.5V | 5.5V |
| Plate voltage | - | 450V |
| Cathode current | - | 100V |
| Power dissipation at the plate of each triode | - | 40W |
| Grid voltage, negative | - | 220V |
| Grid circuit resistance | - | Fixed bias : 0.51MΩ Self bias : 1MΩ |
| Temperature at the most heated part of the envelope | - | 473K° |
We deliver all over France, and internationally.
To find out the amount of shipping costs, simply go to your cart once you have added the desired products.
To discover our different services and delivery options, click on the following logos :
No reviews at this time.
English 
Français 
