The EL84 / 7189 / 6BQ5 vacuum power tube is well known by electric guitar players and audiophiles alike for its smooth, sweet sound, and great sustain. The EL84 tube, or commonly known as 6BQ5 vacuum tube in North America, was intended for use as an inexpensive alternative to the larger power tubes of the time. Matched pairs, quads, and octets are available...More Details