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The Big G

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    908
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  • occupation
    Project manager
  • hobbies
    Footy and playing guitar
  • Location
    UK Yorkshire
  1. Graham, Preamp tubes last for many years, decades at times. Output tubes are a different story. If you have a bias tool or bias probe then biasing the amp is pretty fast and easy. On your amp it is less than 5 minutes and the chassis does not even have to be pulled. I set the bias about 30mA using one of these sorts of tools. Preamp tube changes need no bias or any adjustment ... plug and play. One of my favorite output tubes in the Twin Reverb, original or reissue, is the REAL winged C Svetlana. ARS Electronics usually has these in stock and although I am unsure of the price they are a great deal and their testing and matching is first rate, plus, they sell direct to the end user as well as having their commercial division. They are at www.arselectronics.com as a side note. They are also a pretty cool source for a lot of things other than tubes. The real Svetlana is NOT the same as tubes with the Svetlana name or SED name as those are not from the actual Svetlana factory but from the Sovtek factory. The real Svet (winged C logo) is a copy of the famed Sylvania STR387 which WAS the tube used originally in the Fender BF twin reverb. Myles many thanks and thanks for the tube shout I will give them a try, but thanks again for your help G
  2. hi Myles Hope you can help, I have a Fender twin 65 re-issue and I would like to know about the valves and bias on the amp. Firstly i know the valves are a couple of years old but still sounding good, should i be looking to change them? If i do change all 4 6L6's do I have to then get the amp re-biased? Can I do the bias or is this an amp techs domain? many thanks Graham
  3. Miles I hope you can shed a little light on this one. I am looking for around a 20w valve amp and I am looking at Fender blues junior but also a Hi-watt G20. i have tried the fender and own a couple of fender amps but how does the Hi-watt stack up against it. Are they the quality they claim, and how do you rate the clean channel on them Thanks for any help you can give me Cheers G
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