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Electro-Harmonix 7591A Platinum Matched Quad Amplifier Tube

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 Platinum Matched Quad Amplifier Tube

Overall User Ratings (based on 1 ratings)
  • Overall:
    4.5 out of 5 stars
  • Sound:
    5 out of 5 stars
  • Features:
    4.5 out of 5 stars
  • Ease of Use:
    4.5 out of 5 stars
  • Quality:
    5 out of 5 stars
  • Value:
    0.5 out of 5 stars
  • Manufacturer Support:
    0.5 out of 5 stars
  • The Wow Factor:
    5 out of 5 stars
Overall: 4.5 out of 5 stars
(1) (see rating details)
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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
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