Tianlaizhiyin tubes Shuguang Group factory celebrate the 50th anniversary of 2008 after the launch of Treasures series, another great masterpiece!
This series is the dawn of the R & D team in the version on the basis of the the existing treasures Imperial possession, absorbing domestic and foreign the various gall advantage of, which lasted three years constantly upgrading temper made??.
The product is very particular about the use of materials, including imports Du tungsten wire, high purity high density vacuum smelting graphite, West German high-density spring carbon plate, the platinum gate, the purity of 99.99% gold pin tube needles, high transparent lead-free glass, the best significantly the luxury of air!

Shuguang Nature Sound 300B-T vacuum tube
The high permeability unleaded glass shell design, both to speed up the tube cooling effect, and also so that the entire tube more aesthetic
Imports high purity high density vacuum smelting graphite material, anode dissipation power than similar products increase by 20%, fine processing technology, reflects the extraordinary value
U.S. imports of efficient thorium-tungsten cathode, both dynamic distortion, but also able to overcome the weaknesses of other manufacturers filament brittle.
Platinum gate without any gate radiation phenomena in the higher temperature
Conductive rod anode positive tolerance design, no work flashover or transport caused die skew situation
Lengthening of gold tube needle design, so that she and the tube socket tight embrace, no signal of omission
Maintain and exceed the original tube sound

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