It is also possible to convert the Tube Driver to DC power so it can run from a standard pedal power supply, as is the case with the Tube King and some Taiwan made Real Tube pedals. Shown above - A short plate, unbranded Goldern Dragon 12AX7 that ships with the reissue Tube Drivers made since 2006. Shown above (left to right) - An original long-plate Ei Yugoslavian ECC83 tube, a re-branded Ei tube marked 'TUBE DRIVER' that shipped with the original BKB/Chandler Tube Driver in 1986-87, and the same tube branded 'CHANDLER ELECTRONICS' that shipped with some 1987 Tube Drivers and the cheap Chandler branded Tube Drivers in 1988-89. In general I have not heard any difference when swapping tubs when using high volume/high gain settings on the TD. In my experience, the differences are more noticeable at high volume, and low drive settings on the TD. Some people don't really hear any difference when swapping tubes, and others hear drastic differences. The stock tube shipped with Tube Drivers was alwasy a 12AX7, but different brands of tubes or tube types may alter the sound in different ways. The tube is usually glued to the socket with a silicon rubber, but you can peel or cut that away. Chances are you will never have to replace it, but you may want to experiment with different tubes to see which sounds best in the TD to you. Since the Tube Driver is a starved plate design, the tube will last much longer (even though the original user guide said they only lasted 2-4 years!).
In typical power amplifiers the preamp tubes can easily last 15 years or more with moderate use and 10 years or more with very heavy use. Or, have the transformer inside replaced with one that works with the mains voltage of your country. To run a 220-240V Tube Driver on 110-120V mains power, use a step-down voltage converter. To run a 110-120V Tube Driver on 220-240V mains power, use a step-up voltage converter. Conversely, if you plug a Tube Driver with a 220-240V transformer meant for the Eurpoean market into a 110-120v outlet, it will only draw 1/4 the power it needs and may not function properly. It will draw 4x the power it needs, causing it to overheat and damage the circuit.
DO NOT plug a Tube Driver made with a 110-120V transformer into a 220-240V power outlet. Later some Tube Drivers and Real Tubes were made for the European market with transformers that ran on 220-240VAC. The original Tube Drivers were made with transformers that run on 110-120VAC for the North American market. TUBE DRIVER POWER REQUIREMENTS - Most Tube Drivers have an internal transformer that works with the mains voltage of the country it was made for.
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