Quad (4) of factory Platinum Matched pin Electro-Harmonix 300B tubes. Absolutely one of the finest 300B variant in production today, give your single-ended amplifier the optimal sound. The Platinum Matching process includes 24 hour burn in period, matching tubes at real world voltages which ensures a tight match and future reliability. The factory matches these at 300V plate and -61V bias with resulting values marked on top of the box. Electro-Harmonix tubes are made in the Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. They are all recent date codes. Vacuum Tube Values is a Mundorf Premium Partner. The item “Electro-Harmonix EH Platinum Matched QUAD FOUR 300B Brand New” is in sale since Friday, January 17, 2020. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets”. The seller is “wpc1896″ and is located in Lakewood, Ohio. This item can be shipped to United States.
- Model: 300B
- Country/Region of Manufacture: Russian Federation
- Brand: Electro-Harmonix
- Type: 300B