Electro-Harmonix 7591A Platinum Matched Quad Amplifier Tube

No longer available at zZounds
Pick up a modern replacement for 7591 power tubes to make your amp sound like new again. A factory 24-hour burn-in period ensures great tone out of the box.

Electro-Harmonix 7591A EH's are available in platinum matched sets. Our platinum matching process consists of a 24 hour tube burn-in period followed by a bias (plate) current measurement in milliamps. Please specify matched tube grouping (ie. pair, quad, sextet, etc.) when ordering (no odd-quantity groups, please).

For support or warranty questions, please contact the manufacturer:
Phone: 718-937-8300

Reviewers gave this product an overall rating of 4.5 out of 5 stars. (1 ratings)
Submitted January 7, 2015 by Gary Soldat in West Chicago, IL

"Electro-Harmonix 7591A output tubes"

Overall: 4.5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Tubes are beautiful. However, the tubes are taller than all 7591A tubes I have used in the past. Thus, if one sufficient clearance above his existing 7591A tubes, the Electro-Harmonix tubes are fine.

Musical Background:

In 1966 I sang in a group with my future fiancee. The group liquidated, but I am engaged presently.

Musical Style:

Progressive Jazz
2 of 2 people (100%) people found this review helpful. Did you?
Thanks for your opinion!

No longer available at zZounds

In most cases, a product is unavailable because it has been discontinued by the manufacturer