- #REPLACEMENT TUBES FOR BK BUTLER TUBE DRIVER UPDATE#
- #REPLACEMENT TUBES FOR BK BUTLER TUBE DRIVER PRO#
#REPLACEMENT TUBES FOR BK BUTLER TUBE DRIVER UPDATE#
Last update January 2021įor the Tube Driver History and Versions article CLICK HEREįor the David Gilmour Tube Driver article CLICK HEREī.K.
This is a perfectly safe substitution to make.©Kit Rae. Some players prefer a 12AX7/A in this postion as it allows an amp to "break up" or distort at lower volumes due to being "mis biased" in the 12AT7 circuit. I highly recommend the Mullard CV4024 or ECC81, or RCA 12AT7 for V6. Some say it has little or no effect while others claim it's critical to have a high quality 12AT7 in this slot. Opinions on how the phase inverter affects tone vary. V6: A new production phase inverter should often be replaced when replacing power tubes if it is more than a year old. This is a good place for microphonic or cheap 12AX7s. This is used as an oscillator for the tremolo circuit and has absolutely no effect on tone. This is the least critical tube position in your amp. Excellent: Raytheon 12AX7.īest new production tubes for this socket are Electro Harmonix, JJ ECC803S, Sovtek 12AX7LPS. Highly recommended: JAN GE 12AX7WA, RCA 12AX7A, ANOS RCA 12AX7A or, RFT 12AX7. This is a much lower gain stage and won't be as sensitive to a microphonic tube. If you have a tube that's microphonic in the V2 position, try it here. The 2 nd most important socket affecting the tone of channel 2. Some customers say that the CV4024s remove an overly "surfy" reverb tone which can result from using a low end 12AT7. Better 12AT7s (notably, the Mullard CV4024, Mullard ECC81 or RCA 12AT7 s) will also improve the tone of your reverb. Some 12AT7s that will work just fine as phase inverters (V6) will crackle and hiss in this position. V3īecause of the high demands placed on this tube by the Fender reverb driver design, it's important to get a good quality 12AT7 for this slot. Highly recommended: JAN GE 5751, RCA 5751, JAN GE 6072 (12AY7) or any other NOS 12AY7. Often, one of these substitutes is used to reduce harshness in the first stage of an amp. Each will give reduced gain and a different tone. Excellent: Raytheon 12AX7.īest new production tubes for this socket are Electro Harmonix, JJ ECC803S, Sovtek 12AX7LPS.ġ2AY7/6072s (as used in the front end of many Fender tweed amps) or 5751s (a lower gain 12AX7 great for smoothing out any harshness sometimes caused by humbucker pickups in Fender amps) are often substituted in the V1 and V2 sockets. Highly recommended: GE 12AX7, RCA 12AX7A, ANOS RCA 12AX7A, Brimar CV492 or, RFT 12AX7.
This position is particularly sensitive to microphonic tubes due the high gain of channel 2. Experiment with different types to find your tone. This tube is critical for the best tone for channel 2 (your reverb/tremolo channel). Excellent: Raytheon 12AX7.īest new production tubes for this socket are Svetlana (sound most like NOS RCAs), Electro Harmonix, JJ ECC803S, Sovtek 12AX7LPS. Pick the highest quality 12AX7A or 7025 (7025s are nearly impossible to find). If you do use channel one, this tube is the most critical to tone for that channel. Doing so will give you increased/earlier overdrive in channel 2. You can also opt to remove this tube entirely.
If you don't use channel 1, don't worry too much about this tube, any 12AX7 or 7025 will work though noisy or microphonic tubes in this position can be a problem even if you're not using that channel.
#REPLACEMENT TUBES FOR BK BUTLER TUBE DRIVER PRO#
Typical examples: Deluxe Reverb, Vibrolux Reverb, Super Reverb, Twin Reverb, Showman Reverb, Pro Reverb and Dual Showman Reverb. Fender 2 channel reverb amp preamp tube layout (as seen from the back of the amp)Ģ nd gain stage for channel 2 and reverb return amplifier
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