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Listen and trust your ears , not the cheap tubes sellers put in there ! The Rebel 20 harshness is gone , the final tube change was needed because once I cranked the R20 up it was had to much bottom end and flubby but lower volumes were good practice setting with the GE 5751 tube. I went with a...

Same goes for the Rebel 20 with its 4 - 12watt power tubes in push pull can get a bit over 40 watts ? Any power test please reply with results whatever you get is good !

I luv the Rebel 20 at last , V1 GE 5751 has a fat midrange and extended bass range which I cut down ! V2 I put the Tungsram 12ax7 expensive but the most harmonic tone of most any vintage tube no joke . V3- of course the best phase inverter you can find sovtek 12ax7 long plate balanced triodes...

In your preamp , if you want crunchy distortion in you overdrive socket use new Tungsol 12ax7 If you want a singing sustain with silky beautiful highs use a Tungsram 12ax7 if you can afford one ! 3rd Is the Sylvania long black plate 12ax7 , smooth distortion think Richie Blackmore Smoke on the...

I can not stand the 490r neck pickup as its a muddy sound and not a good sounding distortion to my ears in tubes amps. I can put up with the 498 bridge pup but any ideas too replace that 490r please post it for me. Any idea would be better than current pup on the neck imop

How can a amp like the R30 run 4 tubes rated at 12 watts each at max which is about 48 watts only get 30watts ? I do not have a oscilloscope too test , but I know the plate volts are 375-379 which is high as you want with these 6v6/el84 tubes. You would have too put the tube mix control at...

Try the Vox Deca delay not digital pedal in you FX loop and you will never use reverb again ever !!

Did I mention for 3 years I did not like the Rebel 20 head tones. I could only get a harsh grunge crunch that sounded ok only for garage punk rockers only when cranked ! I tube rolled the preamp 12ax7 tubes with all new production tubes and vintage ax7 many times. I read the bright Marshall amp...

Next amp I need too re-tube is a marvelous Laney VC-30 combo , its a great stage amp in my opinion ! Its a very Vox or Highwatt like, a bright sounding amp it is but has a very good Tom Petty American tone. Next payday I will order the $19 7025 new designed china made tube like I used in the...

A EQ adjustment is needed but the controls for it are resistors that cut the tone and mids & bass ! Preamp tube types have there own EQ output some good and some bad in the particular circuit its in ! No exact science has been perfected for guitar amp tube tone due too the circuits have wide...

When a Amp and Guitar sounds right I know it because I actually listen to it ! The texture of the pick attack must not be harsh or I can not play it truthfully ! If you can just play your stock sounding amp then more power too ya ! Blues and blues rock must in my opinion sound great and took...

The GE 5751 has the deepest bass response but some amps get too boomy ! But I remembered a new 7025 a new china designed tube hard too find but its on flea bay about $15 . So I put this 7025 in to push the GE 5751 and better still , no harshness in the highs and big bottom end too ! I think I...

Never mind the good sounding Digitech Bad Monkey pedal I put a Tungsram 12ax7 in the OD socket and a GE5751 next to it and wow . That Rebel 20 head sounds soooo gooood it sounds like a totally different amp ? I played it through a Celestion 70/80 speaker and no nasty garage grundge crunch but...

So many great sounding old 12ax7 tubes no particular tube is best in all amps except perhaps RCA long black plate 12ax7 tube ! In the amps that have preamp gain breakup that is what I call the overdrive tube socket. In short as I can describe them. The RCA ax7 Black plate or Bp tubes do not...

I was amazed the warm sounding DiGiTech Bad Monkey over-drive pedal had such a natural rock guitar sound ! I like highs but the R-20 amp is too bright for me ! I never liked the slap you in the face pick attack. Its a totally fun r&r Blues amp sound and its fun as heck. You can re-voice the...

I have re-tubed the preamp with vintage 12ax7 and the best OD tube ended up to be a Telefunken grey ribbed plate ecc83 whoa its fantastic realism ! The amp harmonics respond with great effect as I went thru tubes , my tubes have made the amp screaming with sustain and the crunch tones are...

My Weber Mass lite has highs and lows control but the tone suffers horribly ! A bitmo mods 30 watt attenuator sounds better by far but I do not use it as the volume gets so loud still anyway my room mates can not survive reality of the power tubes breaking up for long !

The amp has plenty of over-drive and would rock but I did not bond with it ! Yeah I was bright as the speaker had to go , replaced with a Eminence Wizard and sounds better but ? I have many vintage 12ax7 tubes but the magic I found with a 5751 black plate tube replacing the 12ax7 in V2 was it...

The size of the chassis cabinet needs more room for bigger hotter tubes I think, top of tube too cabinet is critical I suspect !

My question is simply will a 8ohm amp going into 8 ohm speaker overdrive the power tubes earlier than amp 8 ohm going too 16 ohm speaker ? Some talk of mismatches as a option but what about the tubes , I have run a 8 ohm amp into a 16 ohm speaker with no worries. I could be defeating the ability...