Orange Rockerverb 50 MkII with EL34, KT77, 6550 and KT88 tubes

[@GutyRodrigues]

Drive Tones: EL34 0:34 KT77 2:31 6550 6:34 KT88 10:43

[@snail415]

I have 6550s, and it's nice to hear/read the conclusions you came to. Bonkers tubes.

[@DrDannyMannGuitar]

Justin Martin nice!!

[@GlennMarshallRocks]

To compare starting with the same volume and lick - EL34 0:16 KT77 1:47 6550 5:43 KT88 9:54 Surprised at how much warmer, fuller, richer, and less harsh the KT77's were. Gonna have to pick up a pair to try in place of the EL34's in my amp. Very nice comparison... thx...

[@timothyjay2012]

So clear and bright its unreal!

[@DrDannyMannGuitar]

I couldn't tell you how they compare directly, but I believe I've played through an amp with kt66s before and enjoyed it! Good luck figuring out your tube needs

[@ElazulVGM]

Cheers for doing this demo. I put KT88s in my RV50 MKII after watching this and it sounds waaaaay better both clean and dirty!

[@DrDannyMannGuitar]

Happy to hear it! You still have it?

[@ElazulVGM]

@@DrDannyMannGuitar I don’t unfortunately! Had to downsize a few years ago and I just wasn’t getting full use of the wattage and volume that thing put out. Loved it for years though! And hey I still got my AD30 at least hah

[@DrDannyMannGuitar]

@@ElazulVGM ahh right on!

[@CoquiAudio]

good design I like the fact that tube can be change to different ones nice :)

[@DrDannyMannGuitar]

@cyphervox I'm really glad this video helped you. I love how KT88s sound in this amp! I biased mine to about 60%. That sounded best to me. I kept it on the EL34 side because I couldn't reach the right bias range on the KT88 side, I asked Orange tech support and they said that this is fine. Let me know how Gold Lions or other KT88s compare to the JJ's, I'm curious about that. Have fun!

[@custompainter]

Thanks for making this man!

[@DrDannyMannGuitar]

You’re welcome! 🤘🏼

[@custompainter]

Dr. Danny Mann do you recall if you had to turn the bias down all the way, then switch to kt88 and then bias from there? Or did you just swap to kt88 and dial in bias?

[@DrDannyMannGuitar]

HCO Guitars it was a while ago, but I think I remember that I could only get in the correct bias range on the el34 side for KT88s

[@zpottsy]

The KT88's are awesome, but the sound I was hearing out of those KT77's from 4:40 min's to 5:13 min's was my tone all day long. I play a lot of 80's hard rock (not to be confused with hair metal). That being said. The KT88's low end tightness is like a dream come true for chugging, and D-jent style playing. But the in your face tight mids of the KT77's is what I'm talking about. The 6550's sounded Ok, but a bit too compressed, or lacking in the mids. Just not open enough in the midrange. I have a Jet City Modified for 2 X EL84's. I currently have 2 X JJ EL84L's in it. They sound great. But the KT77's are what my next Set of power tubes will be. Then the all mighty KT88's. Just to make sure.

[@DrDannyMannGuitar]

zpottsy glad this was helpful for you! I’ve always dug el34s and 88s the best. Good luck on your quest!

[@zpottsy]

After reading all of the comments. I believe you mentioned that you tried a couple of Genalex Gold Lion KT88's, and liked them better than the JJ's. I was also wondering what negative bias you set your amp at for the KT88's? An Amp tech suggested to me, somewhere between 48-52 Neg. Bias. I've also seen 60, or even 70. Very confusing to me. What do you suggest?

[@DrDannyMannGuitar]

zpottsy the bias you set depends on the plate voltage of your amp. I usually like around 60% bias.

[@zpottsy]

Thanks man! 60% seems to be a popular setting. Since this Jet City Custom 22 was modified from EL84's to EL34's I may have to replace the bias feed resistor from let's say a 220k, to a 100k. depending on what reading I get when I go to bias it. Thanks again, and I'm gonna go with the Genalex KT88's before the KT77's. That tight detailed bass was the seller with those. ROCK ON!

[@Ariel-oo1nc]

I liked the KT77s with your amp. They tamed a lot of the Flab I was hearing and made it more in your face. Nice amp. Edit: The KT88s are nice on their own, but I think the 77s will cut better in a band / studio mix.

[@dannymann6806]

Sweet!

[@DrDannyMannGuitar]

awesome! yeah you can hear this rig in action. we're releasing a new album soon with great recordings of the Orange with kt88s

[@DrDannyMannGuitar]

thanks!! I just checked out Baron amps for the first time and I'm REALLY impressed. They are definitely making some tones that are totally my taste. Hope this video helps, I'm going to post better recordings of the rockerverb with kt88s sooner or later!

[@TheChanneling]

Fantastic video. I am heavily considering an RV50mkii over my current Marshall JVM 410h. The JVM has sounded great on its own in a room, but on stage, it sounds sterile and shrill. Tried all kinds of tube combos. I love the articulation in a Marshall, I'm hoping to find the same in the Orange.

[@MrSteimy35]

Thanks for doing this. Very useful.

[@DrDannyMannGuitar]

Steimy35 you're welcome!

[@DrDannyMannGuitar]

You can acheive a similar sound with the Jim Root Terror since the preamp is the same, but the bigger power section of the Rockerverb just makes the amp sound bigger and cleaner (more headroom). Of course the cab/speakers make a big difference too. For a small rig I recommend the g12h30 speaker, I have one in my orange 1x12 and it sounds huge!

[@DrDannyMannGuitar]

Thanks! I'm glad you like the video. I used to have a Marshall too, and the Orange in comparison is more clear, responsive, sweet and heavy in my opinion haha. Rockerverbs are killer amps, I bet you'd like it better than your Marshall. Don't underestimate the power of a good cabinet either, it makes as big of a difference as the amp.

[@TheChanneling]

I just realized you guys are also in O.C. California! Small world! I'll have to see y'all play!

[@ALtheDoctorWho]

I see your into the JJs not the same Dynamics and headroom of the of the original GEC M-O valve. I have a set of JJs right now. They are dependable as far as I can see. However they do not knock the air out of me like the original tubes did.Its hard to tell the true sound. The mic has it limitations but I get the Idea. Thank you for posting the Comparison. I think its great that we have this available to us these days.It drives every one crazy testing tubes and pickups without having an Idea. thanks Again.c];-D

[@dannymann6806]

AL theDoctorWho I'm glad this video was useful to you! The original tubes in my amp were Ruby BHTs - and those are the EL34s in this video. Happy tone-questing

[@TTSWINC]

@whiteyanderson A bit looser on the gain side I meant to say. I like a looser feel. Seems like the KT88 are a bit tighter.

[@DrDannyMannGuitar]

Yeah I have experience with both speakers, I really like the G12H30 in my 1x12 orange cab since it's a huge sounding speaker. V30s are tighter in the low end and more middy while the G12H30 has bigger bass, less mids and probably more crisp highs. Speakers and cabs make much bigger differences than power tubes for sure

[@L0nn13_c0]

KT77 - much more smoother. Less harsh highs, more saturation. KT88s were nice too. Edit: I liked the EL34s better though.

[@DrDannyMannGuitar]

Glad that you had similar success with KT88s!

[@DrDannyMannGuitar]

Unfortunately, at this resolution the differences between tubes are a little less obvious than a higher quality export. If you can, listen in monitors. In any case, this still give you at least a sense of these power tubes.

[@DrDannyMannGuitar]

@chorisia25 I didn't do a 6L6 test just because it seemed that these tube types would be more of what I was looking for. The KT88s haven't really made the amp hiss less than el34s, I don't think the power tubes affect that much.

[@DrDannyMannGuitar]

@SEBANO1974 Yes, bias should be adjusted for any power tube swap even of the same kind. Hope you like the KT77s, they just weren't for me

[@DrDannyMannGuitar]

yeah, people dig that tone. I'd say that this amp is the least fizzy/loose in their product line and especially after some tube swaps.

[@DrDannyMannGuitar]

Yes I used a bias meter. That bias range sounds about right for EL34s given the plate voltage I measured on my amp. My bias was rather higher for KT88s

[@DrDannyMannGuitar]

@cbertram11 I personally love the KT88s and think they rule for any settings with this amp. 6550s are great too, but there is a less prominent and sweet midrange than the KT88s.

[@sheishei1986]

@SorizonMann Thanks a lot ! When i've get my amp retubed i will post a video on youtube and i give you my impressions.

[@TTSWINC]

@SorizonMann Thanks for that info. Kind of weird though huh? I guess I'll try out the 6L6's then. I have a feeling I'm just going to come back the to JJ EL34's or E34L's. I HATED the stock Ruby's. The JJ's realy smoothed the tone out in my MK II. Just wanted to see if the 6L6 might tame a bit of the extra graininess. I play a style sort of like chorisia only heavier. post-metal if you will. I will say that my clean channel is REALLY pretty clean though. But I need it a bit looser.

[@DrDannyMannGuitar]

you can change preamp tubes without biasing so that may be a good start. Also, if you're using a lot of gain, all amps will hum, so for high gain noisegates are pretty crucial. Biasing power tubes is something you definitely need to research a lot to do safely. And although you'll save money in the long run, you will need to get the right tools to measure voltage. I learned how to bias my amp completely from online resources, so it takes some digging but it's totally doable.

[@Rooster7six]

Awesome vid! Thanks!

[@DrDannyMannGuitar]

@whiteyanderson For me, the 6L6 side of the bias switch was also more limited in its range but I still got up to about 47 on that side. For the KT88s I needed to go higher so I just kept the bias switch on the EL34 side. I emailed Orange tech support about this and they said that whatever side of the switch gets you in the right bias range is fine.

[@DrDannyMannGuitar]

@sheishei1986 I don't have any experience with the Gold Lion KT88s, but I've read great things about them. As for the JJ's in the preamp, my experience is they tend to make your sound a little darker and smoother. This may be good for playing doom, but for me I had to carefully place mine because in certain slots I felt like it made the sound a little muddy. I'd recommend trying the preamp tubes first, seeing what you like, then changing the power tubes so you know how each affects your tone.

[@furcifur3]

I think the 34's sounded best on clean settings. But who cares about clean, it's a Rockerverb. I do enjoy the character of the 88s.

[@bpcborja]

nice video. How did you do tu unensamble te amp from the chasis? I removed the 4 screws of the base and I can´t extract the amp. Thanks for the video

[@DrDannyMannGuitar]

bpcborja it’s been a while since I had that amp, but I believe you need to remove the screws from the rubber feet in order to take the amp out. It just might be a little heavy. Good luck!

[@bpcborja]

@@DrDannyMannGuitar Thank you!!!!!!

[@DrDannyMannGuitar]

@JerkyChid I love the KT88s! That's what I'm using now.

[@DrDannyMannGuitar]

Nice! I've worked on getting a tighter sound out of the Rockerverb too- KT88s definitely help. I just got the Gold Lion reissue KT88 and it sounds a little better than the JJs (for extra cash). I have an EH 12ax7 in the first distortion preamp slot and a JJ in the second distortion slot. The EH offers a little more detail and clarity than the stock tube. Since preamp tubes are cheaper, I recommend just experimenting!

[@DrDannyMannGuitar]

Glad to help!

[@bpcborja]

Nice video.Do a tutorial to change the power valves

[@DrDannyMannGuitar]

bpcborja thanks for the suggestion! I’ll explore the vids that are out there and see if there’s something useful I can add

[@bpcborja]

@@DrDannyMannGuitar ok. Thank you!!!

[@obestertomas]

wow thanks for great info ! I m using a clean sound max 5% of my playing so headroom is not problem for me, also pod hd can give to rockerverb sound great boost with some compressor/eq/tube screamer I m only hoping, that it will cooperate with effects loop without problem, because pod HD doesn t have Orange preamp models and I think, that rockerverb/jim root terror is much warmer and richer than mesa/engl preamps in POD HD...

[@DrDannyMannGuitar]

Yes, the clean channel does break up later with the KT88s!

[@DrDannyMannGuitar]

yeah I love KT88s in this amp!

[@123lowp]

I own Orange Rockerverb 100. My opinions from switching out tubes below. 6550s are best for cleans and heavier riffing metal. EL34s are best if you want to sound more like a Marshall amp. KT88s are like EL34s with more high frequencies, but you won't notice much of a difference once cymbals start crashing. 6L6s sound like shit in the Orange Rockerverb 100. Just my opinion. Try it out for yourself and make your own opinion. Don't trust me.

[@kittyvlekkie]

Yup i like the 6550's most

[@KevinCube]

KT88s for the win.

[@frigolajm]

the kt88 sound amazing. It doesnt even sound like a British amp with those things.

[@TheFunky57]

Thanks a lot dude!!

[@belligerentapostle]

6550 has massive balls

[@herse83]

I am about to change my tubes in my rockerverb 50mkiii. Was wondering what the bias settings were for the kt88 tubes. I've never did this before so I don't even know what the stock bias is to refer to

[@DrDannyMannGuitar]

@chorisia25 My clean sound never distorted at all even at high volumes with the stock tubes. So there may be a different issue with your amp, maybe a preamp tube in your clean channel is bad? You are rebiasing with power tube changes right? If you usually like 6L6 tubes I'd recommend 6550s for a really crystal clean sound.

[@jirawatmaholarn3438]

Drive sound 0:33 EL34 2:29 KT77 6:32 6550 10:38 KT88

[@metalzone82]

I own Orange Rockerverb 50 mk2 head and i want to change the power tubes with pairs of Genalex Gold Lion KT88. I just wanted to know what is real mA bias setting and what ranges have you found to get the best sound for stoner/doom? Power: matched pairs Genalex - Gold Lion KT88 P.i.: Balanced Triodes Mullard 12AX7 Reverb Send: JJ ECC81 Fx Loop: JJ ECC81 Reverb Return: JJ ECC81 Dirty Channel Stage 3&4: JJ ECC83s Dirty Channel Stage 1&2: JJ ECC83s or 12AX7 EH (which of two choice for deep distortion stoner/doom?) Clean Channel Stage 1&2: JJ ECC83s or 12AX7 EH (which of two choice for very clean channel?)

[@DrDannyMannGuitar]

Hey man, the Gold Lion KT88s rule- I'm using them now in this amp. I biased them around 65%. I don't really do stoner/doom. The JJs and EH preamp tubes are sweet, but I've recently gotten better tones from the gold lion (standard pin) 12ax7s

[@SEBANO1974]

Maybe the KT77 can sound boring, but it seems to me the most clear together the KT88 (which is also most mid-bloateds).I want to change EL34 for the KT77 in my Marshall TSL, I have to change bias?

[@joelsincennes2245]

you really have an amazing metal tone. I have the same amp but am having trouble finding a good modern metal tone. What pedals and/or EQ settings are you using?

[@SorizonOfficial]

Thanks man! No distortion or overdrive pedals here, but now I'm using a Maxon OD808 which sounds killer. A great EQ setting I like is Bass and Treble at noon and mids and Gain at 2 oclock. It was probably a little different in this vid though

[@SorizonOfficial]

Also, make sure you have a good cab/speakers! People underestimate that a lot and it's one of the biggest factors in tone

[@joelsincennes2245]

SorizonOfficial im runnin through the 4x12 but i didnt have a proper speaker cable

[@chorisia25]

SorizonMann I guess I shouldn't call my clean tone distorted, but it did break up early on compared to my MKI head. I did get it rebiased when I got the EL34 switched out to 6L6. Just curious, but why didn't you do a 6L6 sound test on here? From your comparisons, I like the sound of the KT88s over the 6550s. I play post-rock/experimental/indie type stuff. Do the KT88s handle a ton of gain without hissing too much? Thanks again for input.

[@MattxMisfitx]

My amp hums A LOT, and i think i need to change my tubes, its an Orange Rockerverb 50, now i wanted to know, how do i bias the tubes? if i need the repair done quickly, i know people bias their amps without technicians and id rather not pay for a repair

[@cyphervox]

Great, thanks! Did you use a bias meter or another method? When I contacted Orange last week they said to look for 38-42 mA per valve. That should put the voltage somewhere over 500VDC. Does that sound about right from your experience? So if I run it on the KT88 side and crank the adjustment it will still be pretty cold for them? That's kinda weird that Orange would make that side too low for the tubes it's meant for. Thanks for your help!

[@DrDannyMannGuitar]

Probably 6L6 would be closest! If you want to get rid of all power tube dirt for a super clean sound, go 6550

[@cyphervox]

Hi, I'm ordering up a set of KT88's for mine after watching this! What did you bias yours to? How did the voltage and current read? I want to start it up colder and then adjust it to about 60%. Do you have any suggestions for this? I see you kept it on the EL34 side, great to know! I have a set of JJ KT88's also, but I'm ordering Gold Lions or better to try in this beast first. Thanks for any info, and for being awesome in general. Keep the videos coming!

[@Lougleguitars]

Question!! Help me out! Bought this and retubed it with JJ's + biased by a tech el34s. Why is my Dirty Channel lwer in volume than my clean channel? Ive asked around..and what Ive found is thats how the amp is...is your like this? Or anyone else encounters this same prob? Sounds great though!

[@obestertomas]

do you think that you can achieve this sound (EL34) with Orange Jim Root Terror loaded with EL84 ? 50w is too much for me and I am really deciddt for orange with some effects in loop with POD HD500

[@Dwyane3MVP]

Thanks. Nice video. I would have liked to hear some lower gain settings as well, but I get the basic idea. And I have to agree that the KT88's smoothness and low end appeal to me as well. I might fit mine with a pair of them too. Does the clean channel break up even later with KT88s?

[@bpcborja]

Nice video!!! If I change the valves and use the same model and builder, I need to change the bias setting?

[@DrDannyMannGuitar]

Yes, the bias should be adjusted with any power tube change.

[@bpcborja]

Ok. Thank you!!!!

[@JonasDaniel95]

Will it make a big difference if I put KT88 into my JTM45

[@DrDannyMannGuitar]

+Jonas Jørgensen I suspect it will- KT88s are sweet.

[@zpottsy]

According to my research. The output transformer in the JTM45 is perfect for KT88 tubes. I wish I had one.

[@JerkyChid]

Orange sent me via twitter; the KT88s sounded the best to me. That great great chime and lots of body. What do you run?

[@DaveElwoodCutter]

Cool comparison! I have a question concerning the bias process. I'm about to get new tubes for the used RV50 MK2 I got recently (previous owner didn't change tube in 5 friggin' years). I have no problem biasing it per se and I have the tools and some experience with other electronics etc. but is there a way to adjust the bias trim pot without taking the amp apart to get to the circuit board? I found a picture that marked the 2 little holes behind the power tube as an access to the trim pots is that correct? Seeing the location of the pots on pictures of the circuit board of the MK1 it would approximately be the right place but I couldn't find anything definite on the topic.

[@DrDannyMannGuitar]

DaveElwoodCutter Yes, if you're looking at the back of the amp, the left hole is for the bias trim pot (on the 50 watt version). I think the right hole would be for the other two power tubes in the 100 watt version.

[@DaveElwoodCutter]

SorizonMann Great! Thanks a lot!

[@sheishei1986]

@SorizonMann Thanks a lot for this test i would like to change my tubes on my Rockerverb 100 and i think i will put : 4 x GenalexKT88 GOLD LION Platinum Matched power tubes V1-V4 1 x JJ ECC83s Gold custom balanced phase inverter tube V5 2 x JJ ECC81 Gold tubes V6-V7 3 x JJ ECC83S Gold tubes V8-V10 What do you tink about this tube selectio n ? Ps I play Doom

[@ahmedaziz8969]

Hey bro how did you change those without blowing your head?? I want to switch to kt88s ?

[@DrDannyMannGuitar]

I measured the plate voltage and then calculated the proper bias for each tube type. This needs to be done with proper tools and measurements to be safe for yourself and the amp.

[@misiekmaarm]

Hi. Nice job. Plate voltage in Rockerverb 50 is 400VDC or 450VDC ...??

[@DrDannyMannGuitar]

+misiekmaarm Thank you! When I did this about 5 years ago, the plate voltage I measured was a little under 400. It seems to depend on how good your power is wherever you're plugging it in.

[@TTSWINC]

@chorisia25 Hey guys it's me from the Orange forum. I tried the 6L6 and cannot get them biased correctly. After I flip the switch to the 6L6 side my bias pot will only take me 22. My calculations tell me I should be biasing to around 44 with the plate voltage of 395. Am I missing something really obvious here?

[@DrDannyMannGuitar]

thanks!! I think they should pay me too haha! I actually talked to them at NAMM this year and they are interested in advertising new vids I do with Orange gear. We'll see what happens :)

[@pissedjeans88]

hi there, firstly thanks for the video. i have a mrkii rockerverb 50 and after seeing this am totally considering changing to kt88's. my only problem with my rockerverb is that it looses its clarity at higher gain/volumes. it also feels like it has too much presence. im running it into a standard orange 4x12. v30's i think. is there anything you can recommend to help with these issues? i read about changing some pre amp valves and you mentioned changing the first to EH 12ax7? is this the answer? i think i have all stock tubes btw

[@DrDannyMannGuitar]

Glad the video was useful for you! KT88s will noticeably help out with clarity. With the presence thing, the preamp tubes can make a small difference, and they are cheap and easy to swap. JJ 12ax7s typically smooth out high end. For the cab, I really like the combination of Celestion G12T75 in an X pattern with V30s. It gives a more balanced tone IMO. You can do this in your Orange cab or get a Bogner Ubercab (the cab I'm using now) which comes stock in this configuration. Good luck on your tone quest!

[@chorisia25]

I've tried the EL34s and disliked the sound I was getting so I popped in some 6L6, and I'm still unhappy. So far I love what I've heard with the KT88s in. They'll be my next tubes to pop in. Can you tell me what settings you have the clean channel? To me the mkii is a little too harsh/distorted sounding compared to the mki model. I ended up swapping the preamp 12ax7's for 12au7's but I'm still not satisfied. I'm hoping the KT88's will increase headroom/clarity. Any suggestions are appreciated.

[@DrDannyMannGuitar]

You need to get a plate voltage reading to know how to set the bias for each tube type. I'm not sure how consistent they are across amps so I'd recommend just get that measure yourself.

[@DRAKUMEL77]

hey m8 i got rockerverb mkii union jack , and the sound of el34 is kinda muddy ( used to have mk1 with 6v6 s and it was epic. What tube u suggest so i can go close to the sound of 6v6 ty

[@DrDannyMannGuitar]

@sleepside Sorry, but I don't know why that would be happening. Try asking an amp tech

[@dutchburns3514]

what screws do you take out to take the head apart like this? I need to know, because I spilt bass rosin (melts when hot) and it dropped through over like an hour period. Don't know what I'm going to do.

[@DrDannyMannGuitar]

+Dutch Burns The screws are in the rubber feet at the bottom of the amp. That will allow you to remove the headshell. Good luck

[@yobhsiFehT]

OR50s could run KT88s, right.?. I feel like that'd be some pretty great, gutsy classic rock mojo. Thanks for posting!

[@DrDannyMannGuitar]

I don’t know! But it would probably sound massive

[@Neodustin]

I'm a huge fan of KT66 tubes, how do KT77's compare?

[@kranio82]

Hello, how many millivolts you set the bais for kt77? Thanks a lot

[@obestertomas]

did you used any tube screamer ??? or is that great sound only from rockerverb ? :O

[@DRAKUMEL77]

6l6s aren t kinda risky for a british sounding amp ? Maybe i dont know many things about tubes that well , but i want so badly to get the sound of mki and i am starting to think mkii is a fail amp .

[@DRAKUMEL77]

thx for ur reply i hope it works

[@Bognerman14]

Why do Orange amps tend to sound fizzy and not very tight in the lows. Is it by design?

[@jirawatmaholarn3438]

6:54 6550 11:37 KT88

[@529ark]

are you just able switch the bias switch on the back to change from el34 to kt88s? or do you need to manually bias it when switching tubes?

[@DrDannyMannGuitar]

You need to manually bias it. That switch can just help you get in the correct range

[@tigerbackwoods]

did you have to make any changes to the amp other than biasing in order to safely try out kt88's in this amp? i ask because im thinking about putting kt88s in my th100 but i dont know if itd be safe. can you tell me the bias for the tubes in milliamps?

[@DrDannyMannGuitar]

I think the TH100 only supports EL34 power tubes. Try asking Orange Tech Support. Good luck!

[@borlach321]

I was told EL 34's lack bass and focus on midrange. Is the bass that bad or that much better with KT88's?

[@borlach321]

listen to this...its incredible.

[@dannymann6806]

From my experience, KT88s seem to have a wider frequency range (including extended bass) that end up making your tone sound huge compared to el34s.

[@Beelzehump]

Tried the kt77s with kind of a cold bias?

[@DrDannyMannGuitar]

This video has the KT77s with a hotter bias. I preferred the hotter bias sound over a medium bias for those tubes.

[@DrDannyMannGuitar]

Kt88s and 6550s provide a lot of clean headroom in this amp and they offer a more unique tone than with the stock el34s. I wouldn't say you need the 100 watt.

[@emoboi311]

KT-88s!!!!!!

[@StephenAnthonyMusic]

I like EL34 best

[@johnsimms3957]

I prefer JJ tubes too now.

[@DrDannyMannGuitar]

+John Simms Nice!

[@DrDannyMannGuitar]

This actually isn't an amp review, it's just demonstrating the effects of a power tube swap for two specific tones- a clean tone and a high gain metal tone. Hope you still got some use out of the video!

[@justme-n-gracie]

would have been nice to actually put labels IN the video so that the viewer wouldn't have to refer back to the comments repeatedly to know which tubes they're hearing

[@DrDannyMannGuitar]

Done! When I uploaded this 11 years ago, that was not a feature 😆

[@Salmontemaki]

0:34 10:43

[@chorisia25]

@whiteyanderson Hey, I don't know anything about biasing so I can't be of much help.

[@HateGogleAndApple]

EL34. TEH midz. TEH presence.

[@timothyjay2012]

The Kt88's sound so much better to me maybe im biased lol but man that thing smokes with those in it!!