The sapphire series adopts a blue glass shell, which brings more than just visual art to people Enjoy, at the same time, the blue glass shell has the ability to shield electronic clutter and ensure uniform electron escape Function: Use three-point fixing around the top mica to prevent transportation or use Screen vibration reduces frizz, making the background more peaceful and the sound smoother Naturally, the service life is longer and the failure rate is greatly reduced.
Sapphire 300B Vacuum Tube Specification
Filament voltage :*5.0V
Nominal filament current : 1.2A
Plate voltage : 300V
Grid voltage(DC filament) : -60V
Plate current
Grid to plate transconductance : 5700 ohms
Amplification factor : 3.85
Grid current : 0.05uA
Plate resistance : 700 ohms
Limiting Operation conditions for safe operation-not simultaneous ratings
Maximum plate voltage : 450 volts
Maximum plate dissipation : 40 watts
Maximum plate current of ayerage tube for fixed gridbias : 70 mA
Maximum plate current for manually adiusted grid orself-biasing circuit : 100mA
NOTES: Price = one pair (2 pieces)
Introduction:
1.The latest development products
2. The sound quality is clearer, perfect and delicate
About after-sales and warranty:
1. EECTECH is a direct online distributor of LIN LAI factories. All LIN LAI tubes purchased from EECTECH can get a formal warranty. The warranty is 12 months; and free factory matching is provided.
2. If foreign users buy LIN LAI tubes from unauthorized distributors, we do not assume any warranty and quality assurance, so please look for the factory direct seller (EECTECH) when purchasing LIN LAI tubes.
3. At present, LIN LAI factory does not authorize any foreign network distributors, EECTECH is the only sales platform from Mainland China to the world
For delivery time:
Please contact us for checking the delivery time before placing your order.
Generally, we will dispatch the items within 7 days upon order confirmation; some items may need 20~25 days to get ready for delivery, then we will try our best to dispatch as soon as possible, or we will contact you and offer advice.
For Bulk order:
If you would like to place a bulk order, please contact us for better price and better delivery cost.
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