845 Tube vs KT90

Still looking for a solid opinion on the general character of the 845 vs the KT90 on classical.
As I say i'm very happy with the JOR but having read all the comments on the magic of the 845 I'd like to know if this would bring another dimension to classical.
If the 845 is brother to the 300B then it aon't gonna happen. Classical, orchestral I'm refering to, totally overwhelms the cababilities of the 300 tube. Even most KT88 amps I've heard have difficulities with orchestral. Have not heard the EL34's. The KT90 may be the ideal tube for orchestra.
Thoughts?

Bartok, I think your experience with other output tubes is experience with those AMPLIFIERS. An excellent-sounding amp can be built around vurtually ANY output tube. Also, 845-based SETs, which usually have 20 - 25 Watts, may well be short on power for ANY speaker with sensitivity below more than 90dB.

You don't tell us how much power your Jadis amps have; how much?

One alternative to 845-based SETs is the Antique Sound Lag Cadenza, a push-pull amp of 60 Watts... http://www.divertech.com/aslcadenzadt.htm . Harry Pearson raved about them in his review of the Hansen speakers in the January issue of 'The Absolute Sound'. Rather expensive at $6K.

I use ASL's new 845-based SETs, the AQ1006(845)... http://www.divertech.com/asl1006845dt.html ...to drive my DIY 97dB-sensitive line-array, open-baffle speakers.
[IMG]http://i89.photobucket.com/albums/k220/jeffreybehr/OB%20JG6518%20speakers/12Decfmlisteningpos_800w.jpg[/IMG]

They sound VERY good together on aLL the music I play, which is mostly large-scale Classical and film music.
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I dont know what amp you heard the 300B's with but they can be stunning in a push pull set upX4. The mids are somewhat colored and the bass is uncontrolled but the highs are very nice indeed, Too bad i ran them into clipping too much so I sold them . Ca 339

Jeff interesting post. The 845 I am interested in are the Cayin mono blocks, not the big ones, its the $5K model. Not sure of the specs, it may be push pull. . IOW like the Cayin 300, they offer 2 models, the push pull (P) and the 300 set (D model)
I believe I heard the push pull with Silverline Sonatas, 4 yrs ago. I guess the push pull 300 will have more drive for orch vs the set model. So my opinion can't be established until I know which model I heard.
I'd love to audition a 845 in my home.
So there is a ;pw powered SET 845 and the push pull 845.
btw the JOR is rated conservative 40 watts, but tends to be flat unless the tone controls are biased up almost all the way. Which I've been told by the local tech guy is not a proper image. But hey i like it that way and thats all that matters.
I'm interested to know if the 845 will present the orch without the need for pumping the bias up. IOW w/o the use of the tone controls on the JOR the image is way too flat.
The Chinese KT88 amp I demoed at home was useless on the Thor'in any music.
It sounded like the old 60's AM radio.

When I play Faith Hill and the bass tone turned up, vol at 9 o clock, the 7 inch midbass flutter being so over loaded. So the JOR has power, but only if boosted by the tones. i guess I want a tube amp to deliver the lows and highs with minimium roll off. And no muddy/murky/smokey mid section.
Is there such a beast?

>>unless the tone controls are biased up almost all the way.<<

That's hilarious.

How do you expect to evaluate any amplifier, speaker, and/or tube combination with tone controls maxed out?

Lastly, it is disingenuous to judge the qualities of any output tube heard only in Cayin equipment. That is anlagous to judging all gasoline powered automobiles after test driving a Yugo.