New Ip & Gm Factory Matched Pair 2x Electro-Harmonix 300B Gold Grid & Pins Tubes. This product data sheet is originally written in English. New Ip & Gm Factory Matched Pair (2) Electro-Harmonix 300B Gold Grid & Pins Tubes.
This new production EH 300B Gold Grid offers the same specs of vintage Western Electric 300Bs like wide-shoulder ST shape, 40 watt plate dissipation, and 8-course directly heated filaments it adds a few more upgrades. With an upgraded internal construction using gold-plated grids rather than the traditional nickel, the 300B Gold Grid offers a stabilized, consistent sound. These also have beautiful gold pins which eliminate oxidation and increase performance.
We test and/or match our tubes by Gm & Plate Current using a state of the art digital Maxi-Matcher tube tester. The Maxi-Matcher simulates a real circuit and tests tubes in real-world conditions. We also check our tubes for other issues like shorts on calibrated and vintage tube testers. We match our tubes +/- 5% with an overall tolerance of 10%. While we do screen for noise and microphonics, even the best tube testers are quite bad at finding these faults.
The only real test is with your ears. We guarantee that our tubes will be free of noise or microphonics but please be aware that there isn't a whole lot we can do to ensure your tube won't be. We guarantee our tubes for 90 days upon receipt.
Noise and/or microphonic issues are covered. Testing and/or Matching We test and/or match our tubes by Gm & Plate Current using a state of the art digital Maxi-Matcher tube tester. 300B, WE300B, 4300A, CV2609, 300A.The item "New Ip & Gm Factory Matched Pair 2x Electro-Harmonix 300B Gold Grid & Pins Tubes" is in sale since Tuesday, January 15, 2019. This item is in the category "Musical Instruments\Guitars & Basses\Parts & Accessories\Amplifier Parts". The seller is "onlyglass" and is located in USA. This item can be shipped worldwide.