Electro-Harmonix 是美国NEWSENSOR集团旗下第一大品牌，拥有丰富的电子管制造历史和经验，以最好的材料以及最苛刻的制造流程为音响爱好者及乐器演奏家提供最优质，最具音乐性的电子管。EH为当今数十个一线音响制造商提供电子管，更受众多音响发烧友的喜爱，也许您正在使用EH电子管，相信您一定可以领略EH电子管的完美音色和可靠质量。 

Electro-Harmonix tubes  represent the finest audiophile and musical  amplification tubes  available today.  Built to exacting specification,  with an eye on the best aspects of vintage tubes, the highest quality materials and manufacturing tolerances are maintained. Electro-Harmonix also has the best tube matching equipment in the world. Their own designed machinery insures superior matching as well as the best balanced tonal response of any tubes on the market. Sweet, musical tubes for the professional.