Sino 811A Power Vacuum Tube
$
67
.95
Price is for a single tube with standard testing.
SI-811A
The Sino 811A is a greatly improved version and is a cost-effective and suitable replacement for any 811A.
I purchased a Quad set of 811A Sino tubes for an RF Amplifier. Initial reaction is that they are working well to full design specification requirements. Delivery and packaging was also prompt and efficient.
reviewed by: Milton Harris
The tubes work excellent in my Ameritron 811. Packing and shipping very nice.
reviewed by: Larry
Purchased a Matched/Burned-In Set of Four, for Ameritron AL-811H. Received a defective tube & Michelle sent me a new tube immediately. Next to the original set of Russian Tubes that shipped with the amp new (1999), this is by far the best replacement set. The original tubes lasted from 1999-2019. Next set was purchased from Ukraine and was Russian NOS from late 1980s. Didn't last a week. Tried to buy direct from China through AliExpress. Big hassle, no savings. Buy HERE! A1 Sales & Service! KG7M
reviewed by: Michael Marcus KG7M