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Old 8th May 2008, 03:01 PM   #1
benelli is offline benelli  Denmark
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Default The sound of different EL34īs.

Iīm tweaking my Rogue Audio Cronus.
Though good sounding, out of the box, anything can be tweaked for my personal preferred sound.
I am looking at tubes now, and donīt really know, how different EL34īs sound.
At this time i use Tungsram EL34īs, but i do need a little more "edgy" sound. Little more "bite". Little more transient sound.

Can anyone tell me what tube to go for?
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Old 24th May 2008, 01:29 AM   #2
gni is offline gni  United States
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Thank-you for your faith in products produced in the USA!

Don't hear too much "Made in the USA" electronics going
overseas.

As for modifications. . . .will void the 3 year limited warranty. . .

Wait, listen, enjoy. . . then we'll talk about modifications.
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Old 24th May 2008, 02:37 AM   #3
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Default Re: The sound of different EL34īs.

Quote:
Originally posted by benelli

I am looking at tubes now, and donīt really know, how different EL34īs sound.
There is nowhere the amount of difference between brands of tubes that meet spec as some people would have you believe.

Enjoy your amp, buy Morgan Jones' Valve Amplifiers book, read Tubecad.com and listen to lots of music. Near when the warranty expires you'll know a lot more and can start to attack any mods you may decide to do with a better understanding of what's actually going on. Better to educate yourself than waste money on other tubes that will make a smaller difference.

Best of all would be, after you read and learn build an amp from scratch or rebuild something older. Then you can keep yours as a reference and sell it off unmodified when you've built something that is definitely (because you will have compared and know) better than what you have.
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Old 24th May 2008, 07:16 AM   #4
benelli is offline benelli  Denmark
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Quote:
Originally posted by gni
Thank-you for your faith in products produced in the USA!

Don't hear too much "Made in the USA" electronics going
overseas.

As for modifications. . . .will void the 3 year limited warranty. . .

Wait, listen, enjoy. . . then we'll talk about modifications.
This is my 5. USA tube amp., and i have a lot of faith in US made hifi gear.
To mention some af my former gear:
Wadia, Cary Audio, Audio Rasearch and Conrad Johnson. Never had any troubles.
I donīt see, how tube exchange can do anything to the 3 year warranty.
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Old 24th May 2008, 09:50 AM   #5
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I also dont see how changing tubes can do anything to the 3 year warranty...

This is a DIY forum, still some members like to put the beginners off doing any mods, maybe they think they are the only ones capable...

On my Chinese amplifier, I tried EL34, SEB winged C and Siemens NOS, plus some substitutes, EH 6CA7, JJ KT77 and Shuguang KT66...

For a little more "edgy" sound. Little more "bite". Little more transient sound. I would pick the KT66 or the Siemens NOS, the KT77 sounds very good, but more body than liveliness, and it is very unstable...
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Old 24th May 2008, 09:58 AM   #6
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Quote:
Originally posted by Lowrider
I also dont see how changing tubes can do anything to the 3 year warranty...
It shouldn't.

Quote:
Originally posted by Lowrider
This is a DIY forum, still some members like to put the beginners off doing any mods, maybe they think they are the only ones capable...
Grow up. For an absolute beginner to start making circuit changes is very unwise and will definitely void the warranty. Enjoy the warranty, learn, THEN modify. Changing tubes to get anything but a tiny difference in sound (assuming same tube type - some amps cannot substitute other types without mods) is a waste of effort and money.
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Old 24th May 2008, 10:08 AM   #7
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How can one learn without modifying...

You read the posts of the experts and get as many different solutions as you get posters...
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Old 24th May 2008, 08:46 PM   #8
johnm is offline johnm  United Kingdom
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For crying out loud, poor old Benelli just wanted people's opinions on the different sound of EL34s - what on earth is the matter with that?!? In stead he gets a load of elitist bullsh*t from people who have nothing better to do than put people off DIY.

As with everything in life there's different levels to DIY. Some just want to change tubes, some want to go a step further and experiment with 'better' components, and then there are those that change parts of the circuit or go the whole hog and build a design from scratch. There's space for everyone here... or at least I thought so...

Anyway, for what it's worth I second the recommendation for KT66s - the Golden Dragon ones are particularly well-balanced sonically, with plenty of bite/attack. I think they're about Ģ100 for a matched quad. I've also heard very good things about the JJ KT77s, which - I believe - should be a drop-in replacement for the EL34s. With KT66s you may need to perform some tweaks.

Cheers,

- John
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Old 24th May 2008, 09:15 PM   #9
benelli is offline benelli  Denmark
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Just as here in Denmark, when asking a simple question:

Some "wise" guys derails the original path of matter.
Nothing new here, i see.
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Old 24th May 2008, 09:23 PM   #10
Netlist is offline Netlist  Belgium
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I cleaned a bit and the remains are in Texas.
Be nice to each other, life is too short.

/Hugo
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