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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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After nearly a year of consideration, I gave in to the comments posted here about the Ei KT90 tube. Some were not so positive, but the overwhelming majority of you agree that the KT90 is a serious f'ing tube. So, I ordered up a quad and slapped them into my modified JoLida 502A (not too heavily modified... new input wires, Auricaps, and resistor change to allow biasing for EL34 and 6550).I had read that some people found this combination rather poor in the JoLida equipment. I don't know what pipe these folks have been smoking but I've been listening for several hours now and am absolutely amazed at the difference it has made over the Svetlana 6550's and EL34's I've had in my tube arsenal.
This is, to put it mildly, the best combination I could imagine! The KT90's have totally revised how this amp sounds and I *love* it.
The midrange is vastly improved over the 6550/EL34... it's clean and highly detailed! It's deep and expansive. Soundstage depth increased dramatically. It's analytical enough to satisfy my needs for resolution yet it has never once lost its musical finess.
The bass control and impact is astounding! The KT90 packs some serious oomph, yet it's totally controlled and finely detailed. Bass guitars now have strings that can be heard, xylophones now have mallets, etc.
The upper end is now detailed and airy! It's very clean, smooth, and refined.
Again, the midrange detail is what blew me away the most. I have not heard this much detail in anything less than the most analytically anal solid state amplifiers. Yet at the same time, it has none of the shortcomings of these amps.
I'm very happy with the KT90 and cannot recommend it enough! If you have an amp that takes 6550/KT88's, you owe it to yourself to give the KT90 a try. It knocked my socks off!
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Topic - KT90 is mind blowing! Good heavens this tube rocks! - DevoX 17:53:14 11/07/02 (32)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - philo1 20:00:24 11/08/02 (0)
- It is what I'm going to run first - Sector-7G 10:35:42 11/08/02 (0)
- Report again after 100 - 200 hours, maybe? - BlackPlasticSound 10:15:46 11/08/02 (1)
- Burning in now... - DevoX 17:55:04 11/08/02 (0)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - rlawry 08:14:58 11/08/02 (2)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - DevoX 17:51:35 11/08/02 (0)
- The first version, the only one I have. . - John PA 08:30:22 11/08/02 (0)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - Ryan 01:32:12 11/08/02 (5)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - DevoX 05:46:42 11/08/02 (4)
- Operational life is highly variable... - mb-de 07:37:19 11/08/02 (3)
- KT90 was NOT based on the EL519 - Vanimal Manley 10:31:34 11/08/02 (2)
- Re: KT90 was NOT based on the EL519 - artto 16:12:22 11/16/02 (0)
- Korrigendum - or 'Tooling' ... - mb 12:41:00 11/11/02 (0)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - Derick 23:10:47 11/07/02 (0)
- Re: KT90 is mind blowing! Good heavens this tube rocks! - pushpulltriode 21:47:13 11/07/02 (0)
- Sorry it took you 12 years to figure that out... - Vanimal Manley 21:00:52 11/07/02 (16)
- I once read that Manley Labs helped with the development. . - John PA 21:13:23 11/07/02 (15)
- Manley helped with the development, more clarifications. - Vanimal Manley 15:09:43 11/08/02 (1)
- Thank you for your informative response. . - John PA 16:28:54 11/08/02 (0)
- Manley helped with the development. . - Vanimal Manley 21:48:59 11/07/02 (8)
- I also remember an interveiw that involved the producers of the KT90 and. . - John PA 06:39:12 11/08/02 (0)
- Re: Manley helped with the development. . - DJL 04:59:02 11/08/02 (0)
- I was working at A.R.C. at this time and I remember... - Rick H. 03:45:44 11/08/02 (5)
- Re: I was working at A.R.C. at this time and I remember... - DevoX 05:35:14 11/08/02 (4)
- Re: I was working at A.R.C. at this time and I remember... - Jim McShane 06:34:57 11/09/02 (3)
- Re: I was working at A.R.C. at this time and I remember... - DevoX 06:43:09 11/09/02 (2)
- Re: I was working at A.R.C. at this time and I remember... - Jim McShane 08:58:26 11/09/02 (0)
- Re: I was working at A.R.C. at this time and I remember... - Jim McShane 07:44:59 11/09/02 (0)
- I remember hearing of this too ... - Jack Seaton 21:28:49 11/07/02 (3)
- I still have the 1st version and put many thousands of hours. . - John PA 21:33:21 11/07/02 (2)
- Re: I still have the 1st version and put many thousands of hours. . - Jack Seaton 21:37:47 11/07/02 (1)
- Re: I still have the 1st version and put many thousands of hours. . - DevoX 05:26:27 11/08/02 (0)
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