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Old 4th March 2007, 10:28 PM   #1
arvin is offline arvin  United Kingdom
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Default kt88 tubes

which are better ,shuagang kt88s or sovtek kt88s?
what are the best sounding kt88s?
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Old 4th March 2007, 11:05 PM   #2
Tweeker is offline Tweeker  United States
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Best sounding KT88? Genalex.

Electro Harmonix makes a nice reliable KT88.
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Old 4th March 2007, 11:23 PM   #3
Salas is offline Salas  Greece
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The EH KT88 sounds neutral to me. I use them in triode mode. No tonality problems. Don't know the sound of NOS, it is probably richer, but EH KT88 does not make tonal funny stuff, it is forceful, and has clarity at least. Also they seem very stable with bias.
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Old 5th March 2007, 02:43 PM   #4
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I did a check on my tester between a Shugang 88 and KT90....and lo behold the 88 didn't even get cherry red while the 90 had to be derated. The early Shugangs were appalling quality but the present Shugang quality has improved....---->haven't had'em in service for enough time to establish life. Despite the Shugang being lower priced --- > It's the glass envelope shape which isn't attractive on open amps.
I've lost track if Svetlana and /or reflecktor actually make all 88's and are then rebranded and farmed out with different vendors.

richj
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Old 5th March 2007, 08:25 PM   #5
Salas is offline Salas  Greece
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It looks to me that the Saratov plant makes em all. The new Svet and EH I mean. As long as the new Svet EL34, not =C=.
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Old 5th March 2007, 08:28 PM   #6
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Quote:
Originally posted by Tweeker
Best sounding KT88? Genalex.

Electro Harmonix makes a nice reliable KT88.
Electro Harmonix?

Actually this is made by Reflector, Saratov (also known as Sovtek)
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Old 6th March 2007, 02:56 AM   #7
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Quote:
Originally posted by richwalters
I did a check on my tester between a Shugang 88 and KT90....and lo behold the 88 didn't even get cherry red while the 90 had to be derated. The early Shugangs were appalling quality but the present Shugang quality has improved....---->haven't had'em in service for enough time to establish life. Despite the Shugang being lower priced --- > It's the glass envelope shape which isn't attractive on open amps.
I've lost track if Svetlana and /or reflecktor actually make all 88's and are then rebranded and farmed out with different vendors.

richj
If it was an Ei KT-90 from post-1999 or so, it likely had misaligned screens. Healthy KT-90s can take enormous dissipation loads.

Jyst FYI.
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Old 6th March 2007, 03:20 AM   #8
Tweeker is offline Tweeker  United States
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Electro Harmonix also labels a decent KT-90.
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Old 6th March 2007, 08:40 AM   #9
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Jim # Yup.....the best place for bad Q KT90's is in power supplies.

richj
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