Customize your Twin Reverb (or clone) the way you want it with our collection of new old stock USA tubes!

RCA 12AX7A are typically the go to 12AX7 option for Twin Reverbs.

For best cleans use short plates. 

For best of both worlds use long plates.

All sets include:

2 - Free RCA 12AT7

4 - 6L6GC

4 - 12AX7

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Stock tube sets for vintage Fender amps and their clones. 

All sets come with one RCA: 12AX7, 6V6, and 5Y3GT

Customizable options available:

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What are the best tubes for Fender Amps? 

They have been behind countless classic tracks and dominated the market with their versatile range of electric guitar tones. From smooth jazz to hard rock, Fender amplifiers are always a sure bet for awesome guitar tone.

Yet wait, you know all this. You are reading this because you are already in love your Fender amp, you take it everywhere and you want it to perform to its absolute best.

Here is Fuzz Audio’s list (by era) of vintage valves that will help you get that extra 10% of warm tube goodness of out your Fender tone machine.

RCA is King, GE is Queen

When it comes to vintage Fender amps and really any classic USA guitar circuit, RCA is always the first brand that should come to mind. This is because for any given Fender amp made prior to 1965 there is an 80+% chance your amp originally came stock with RCA tubes.

Because Fender relied heavily on the use of RCA tubes up until about 1965, they should always be considered when upgrading tubes in a Fender amp or restoring an amp back to original condition.

However, that being said, other USA manufactures should not be overlooked.

Remember how we said, “80+% chance your amp originally came stock with RCA tubes?” Well, the other 15-20% would be found with GE tubes. GE 12AX7s in particular are a great budget valve to get your amp running optimally without burning a hole in your wallet.

The Best Tubes for Fender Amps by Era

Tweed Era (1948-1960) 

Single speaker tweed amps deserve long plate preamp tubes. If you play with lots of distortion, fuzz or like lots of warmth; black plates are by far the best tubes for tweed Fender amps.

Stock tubes for early tweed Fender amps:

RCA Black Plate Pre Amp Tubes
RCA 6V6GT (Smoked)
RCA 5Y3GT

Our optimal Tweed Champ set:

Black Plate 12AX7
RCA 6V6GT (smoked)
RCA or Tung-Sol 5Y3GT

Back and Brownface Era (1960-1967) 

As amps started to get bigger, tube plates became smaller to compensate for “noise floor” with the larger Fender amps of the 60’s.

If you have a blackface amp with one speaker, long plate preamp tubes are still the way to go.

On the other hand, if your amp has more than one speaker, and you want your amplifier to be quiet, you may want to look at tubes like the 12AX7A or 7025. Both RCA and GE have great versions of these tubes. For power tubes, hands down best performers are RCA black plates.

Stock tubes for Blackface Fender amps:

RCA/GE 12AX7A/7025 (Grey Short Plates)
RCA/GE 12AT7 (Grey Plate)
RCA Black Plate 6L6GC
RCA 6V6GTA (Grey Plate)

Our optimal Blackface Twin Reverb set:

4 RCA 7025
2 RCA 12AT7 Black Plate
4 RCA Black Plate 6L6GC

Silverface to Modern Era (1967 - Present) 

Early Silverface amps would have been found with the last batches of the classic RCA tubes of the Blackface Era. Yet by 1970 the glory days of RCA were over, and we see Fender start to plug in Sylvania/Philips Preamp tubes, along with GE pre and power tubes. These tubes are typically branded “Fender” and sound less warm than earlier versions.

Thus, in our opinion the best vacuum tubes for Fender amps were made pre 1970, and because of this, we are left with the options already mentioned if you are chasing legendary tone.

If you are trying to return your Silverface amp back to 100% stock components you would have several options, as Fender was inconsistent with the tubes they used in this era.

Stock tubes for early Silverface (1967-70):

RCA/GE 12AX7A or 7025
RCA/GE 6L6GC
RCA/GE 6V6GTA

Stock tubes for post 1970 Silverface:

Sylvania/Philips (USA) Preamp Tubes (Sometimes Fender Branded)
GE 12AX7A (Fender Branded)
Power tubes: USA or even JAPANESE