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Vacuum Tube - 7591, JJ Electronics

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SKU: T-7591-S-JJ
Item ID: 004803
Starting at: $17.95
In Stock
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The JJ Electronic 7591 is a reliable and accurate reproduction of the classic tube. This 19 Watt pentode has been used in a variety of amplifiers including Hi-Fi amps and Ampegs. The JJ 7591 is a great replacement for any 7591 tube position.

Apex Tube Matching
Matched versions of this tube use Apex Matching
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Apex Matched PairT-7591-S-JJ-MP609722122924
Apex Matched QuadT-7591-S-JJ-MQ609722122931

RoHS Compliant

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Specifications, Files, and Documents

Product Reviews

4.60 out of 5 based on 5 reviews
3 out of 5

Meh. Westinghouse, Tung Sol, or other USA 7591As will last 5-20x longer than JJs, and the A suffix simply sound better and last longer. I just put Westinghouse 7591As in a pair of Mc30s (Mc Intosh) monoblocks, and they were worth the $250 over the JJs. I consider the JJs to be one of the better 7591s but lately I have had some real problems with JJ not properly annealing their glass. I have never had any RCA, Westinghouse, GE or Tung Sol's bottle crack from the heat. Tung Sol as in Tung Sol made in USA not Mike Mathews' New Sensor reissue stuff from Russia. So far I haven't had too many problems with New Sensor tubes cracking from heat & cooling. That is mostly a JJ problem, and it's getting really old too.

- December 12th, 2019
5 out of 5

I have used the JJ 7591 tubes in numerous customer amps over the past few years with good results. They sound good, and have bias levels similar to the originals, the supply of which continue to diminish.

- February 28th, 2016
5 out of 5

I love having AES within a 30 minute drive. I can actually order something simple, like tubes, in the morning and pick it up that same day during their 90 minute window of opportunity. Their prices are great, they have what I need for most of my vintage tube stereo needs. Life is good

- September 22nd, 2015
5 out of 5

Scott 7591a works very well in my Scott 299c and LK-72 .

- July 16th, 2015
5 out of 5

Tubes worked great in my 50 year old Ampeg amplifier. The people at Antique Electronic Supply, especially the person I spoke with (I think his name was Justin), were more than helpful in understanding what I needed, and getting me the difficult to find replacement tubes. Great product and great service.

- May 10th, 2015

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Substitute Products

The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.