Tung-Sol 7591A Power Vacuum Tube (Matched)
Need matched power tubes? Don't worry! Price includes matching in any quantity you need for no extra charge. Need a matched pair? Just order "2" tubes. For a matched quad order "4" tubes. Matched sextets and octets are available as well.Finally we have a 7591 vacuum tube that is a close replica of the original NOS tubes. If you have an old Fisher or Scott tube receiver, or other amplifier, the new reissue Tung-Sol 7591A power tube won't break the bank, and will keep them sounding great.
Other Tung-Sol tubes
7591 Tube TypesAdditional Information and Downloads
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Power Tube Matching FAQ
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Warranty Information and Return Policy
Warranty Period: 3 monthsAll our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
8 reviews
Tung-Sol 7591A | Spooky best describes how good these tubes are.
by George F
I own a X 202 C Fisher "Control (Integrated) Amplifier" and own Hickock Tube Tester (previously owned by an airport) I initially purchased NOS RCA 7591 tubes (matched set) which I double checked. The RCA 7591 weren't cheap and I thought I would eventually upgrade to a SET tube amp and sell the old 202 with the NOS 7591 Quad. I decided to purchase the Tung 7591A a matched Quad, switched out the RCAs, used the same preamp tubes; 1960's Tesla E83CC (Telefunkin tooling these are the ECC083 & NOS Mullard ECC83 military tubes).
The amp became more "alive" just with the 7591A new tubes out of the box. Vintage Vinyl played on a Bang Olufsen middle of the line turntable and cartridge. The result was Holographic. I kept looking upward on some of the songs, I subconciously reacted as though someone was in the room with me. I purchased an additional back-up Quad because I am never selling this amp, and it's not thought of as the best model for Fisher amps of this lineage.
Tung-Sol 7591A | Happy Customer! Quality tubes, Fast Service !
by Charlie
Great service, Great products ! Reputable Company for a long time.
Nice Product -- Exceptional Service
by Leo -
I bought a matched set of the TUNG-SOL 7591A output tubes from The Tube Store and am exceedingly pleased with their performance. They confirm
the capabilities of the highly rated Fisher 800C receiver, and make its restoration entirely worthwhile. Rapid <24 hour delivery service was a bonus.
(In the interest of future research I must mention that one of the set of 4 tubes failed within 11 months, displaying a white, cloudy deposit at the top of the envelope. Do you welcome such feedback? And is there warranty coverage?)
7868 conversion to Tung-Sol 7591 in Bogan CHB 35
by H&N Audioworks
We have been having a bad time with Electro-Harmonix 7868 tubes cracking at the base and the pins are fatter so they permanently stretch out the socket pins. NOS 7868 tubes are getting ridiculously expensive. I have had success in converting a Bogan CHB 35 to the 7591A's. Rumor has it that the guts are the same with nearly the same electrical characteristics. This does require the changing of the sockets, 9 pin novar to 8 pin octal sockets. The audio results of this conversion have been amazing! Check out H&N Audioworks on Facebook for a sound sample!
Drift Away
by rob
I had my Sansui 1000A completely rewired and replaced all the tubes. The power tubes were a matched set of Tung Sol 7591A's. I turn out the lights and just "drift away" like the dobbin bros song. Just a perfect soundstage.