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Old 19th May 2013, 05:35 AM   #1
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Default 6550s

Now I'm not bashing them at all I love them for their monster extended low end and extended highs but where they sound different vs KT88s is the mids 6550s have a "graininess" I really don't like as much while the KT88s are smoother in the mids. Opinions? What do you guys think?
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Old 19th May 2013, 05:37 AM   #2
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And honestly I don't hear that same graininess in other tubes types the GE6550As and the Tungsols have it though, Its unique to the 6550 sound I think at least though.
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Old 19th May 2013, 05:46 AM   #3
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They sound more "forward" too obviously, kt88s sound/feel more subtle/laid back but I think the kt88 mid range is far superior and much more musical and there is something about kt88 harmonics that I like more than 6550s. You could sum up 6550s as big 6l6 with extended highs/lows but a 6l6 doesn't have the grainy thing going on to me. Maybe I need to get me/try some kt66s lol always thought they had a interesting mid range unlike anything else too.
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Old 19th May 2013, 05:49 AM   #4
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Another thing that is interesting is when you run them at lower voltages, they sound a lot different obviously.
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Old 19th May 2013, 05:54 AM   #5
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Just really curious and trying to figure out how other people hear **** lol
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Old 19th May 2013, 06:47 AM   #6
AJT is offline AJT  Philippines
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is this for a guitar amp?
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Old 19th May 2013, 06:54 AM   #7
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Yeah
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Old 19th May 2013, 08:37 AM   #8
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Why do you ask Tony? Isn't the general idea/knowledge that the KT88 really was and had a more Hi-fi use/purpose while the 6550 was just derived from other stuff pretty much. I'm just saying not everyone hears the same things you know lol
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Old 19th May 2013, 09:01 AM   #9
multi is offline multi  Australia
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Are any of the KT88's real KT88's; I read the all current production KT88's and 6550;s are the same??
Phil
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Old 19th May 2013, 09:15 AM   #10
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no they are not the same at all, the Chinese/shuguangs are a kt88 for sure as well as the kt66s, some of the Russian variants do raise questions though. I wouldn't buy a current production 6550 at all, heard a lot bad **** about them lol. Now on the other hand the KT88s Chinese/shuguangs are actually pretty badass sounding for not too bad a price at all, good value at least.
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