RFT ECC83 / 12AX7 Preamp Vacuum Tube

23 Reviews
SKU: RFT-ECC83

Availability: Usually ships within 24 hours.

USD $‎79.95
Each
Logos may vary from tube pictured, some are branded RFT and some Tungsram or Tesla, but construction is the same. Stock is very limited, no matched pairs available.

RFT is a German brand. The RFT ECC83 / 12AX7 is a durable tube with very low microphonics. The RFT ECC83 is well known as a fantastic hard rock "crunch" tube in Marshalls, Mesa-Boogies, and similar amps. They are slightly darker sounding than many other 12AX7/ECC83 tubes.

Our stock was received in bulk packs so we have packaged these ECC83 tubes in our own white boxes.


Other NOS Treasures       12AX7 Types

Additional Information and Downloads

Reviews:
12AX7 Tube Review

Tube Matching Information:
Matched Sections Service


Warranty Information and Return Policy

Warranty Period: 3 months

All 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

23 reviews

NOS RFT 12ax7

by

I’ve been struggling with my Blackstar Artist 15 for over a year now trying to dial it in. The tone was dull, bright, ragged and lifeless. I tried different speakers and that helped but it still wasn't right. I knew that the amp had “tone” locked away somewhere and I was determined to unleash it. Now I’ve experimented with various NOS tubes in the past with other amps but for some reason I completely forgot about how much they affected the tone, especially in V1. So I started reading reviews of various NOS tubes and had my mind set on a GE Longplate 12ax7 but then I came across reviews of the RFT 12ax7. After reading reviews for 2 weeks, I decided to give one a shot. My Artist 15 came loaded with cheap Chinese Ruby Tubes that got awful reviews. They we described as bright and lifeless which is EXACTLY what I was hearing. So I got the RFT and plopped it into V1 and.....WOW!!!! Unbelievable! I finally got the tone that I had been trying to get from this amp. The difference in tone is very dramatic. The tone is now smooth, rich, musical and to my surprise, very percussive. That one little change transformed this amp into some that can now compete with boutique amps that sell for thousands of dollars. No joke. Can't wait to change out the other tubes now. Will try another RFT 12ax7 and a pair of Winged C 6l6s. This amp gets good reviews with the cheap tubes. Can only imagine what kind of reviews it would get with good tubes!

Noisy

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Noisy noisy noisy ..... Don't like IT at all !!

love these!

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I read some reviews and decided to try these in my Marshall 1959 100 watt slp reissue. I swear I have had just about every current production 12ax7 in this beast and these rft tubes may now stay! I ordered a few and one was bad. The tubes store sent me a replacement immediately! The treble in my poleax can be a bit harsh and untamed and these settle that down and really push the creamy miss forward and bring out the best in this amp that I have heard yet. Definite keepers. There are so many good quality tubes on the market that tube rolling can become a bit of an endless obsession. At one point I was changing tubes more than I was playing. Just buy a trio or at least 1 for your V1 Marshall spot and call it a day. Fantastic sounding tubes for crunch!

Sweet Tube

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I can't get over how quiet this tube made my JTM 45 head sound. The tone seems to come out like never before, with articulation and sensitivity coming of the guitar i never knew was there. Its a great find and a great tube!!

Great in Marshall DSL40

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Dropped this bad boy in V1 in a Marshall DSL40 and I must say it has superb tone. Highs are nice and round and excellent lows and mids. Even sounds phenomenal in V2 (high gain stage). A great deal for a NOS tube.