[1 pcs]

[2pcs Matched Pair]

[4pcs Matched Quad]

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Purchase 2, Buy 4, Buy 8 = Exact Match (matching pair). No parameter drift
Note: After inspecting and shipping, please do not think fake or inferior item after receiving the tube.
About Matching:
It has the requirements and benefits of multiple tubes (4, 8, and 10) to meet your needs. Parameters are the same)
The tube filament uses a spiral winding method to eliminate the noise of the filament and cathode caused by amplifying the voltage.
The powerful discharge pipe also enhances the column design and mica seat spacing, the mechanical performance is very reliable, and the output is more stable and durable.
All tubes use new glass composite technology to increase the vacuum strength of the tube, which means better balance and longer service life.
Its stable quality, neutral sound and affordable price make it the most popular electronic tube brand.