Bartokfan: As Khrys pointed out above, the JOR's transformers are supposedly optimized for the KT90 tubes, though there still are many who prefer EL34s and KT88s in the amp. KT88s will likely give you a lusher midrange and a more "tubey" sound than the KT90s, which are leaner (Khrys's description as the perfect transistor is the way I felt about the KT90s too). As far as current production recommendations, I don't have any, but check the archives, there are a lot of recommendations on current production KT88s.
JADIS JA80 with 6550 or KT 88 or KT90 ?
My Jadis JA80 was built in April 1999 and came equiped from the factory with eight 6550 valves.
Before deciding to buy a new set of tubes, I would like to know some opinions about the advantage or inconvenience of using the KT 88 or the KT 90 tubes in my JA80.
Is there any experience of using these tubes (KT 88 or KT 90) in an amplifier designed from the factory to work with 6550 tubes?
Many thanks for your cooperation.
Before deciding to buy a new set of tubes, I would like to know some opinions about the advantage or inconvenience of using the KT 88 or the KT 90 tubes in my JA80.
Is there any experience of using these tubes (KT 88 or KT 90) in an amplifier designed from the factory to work with 6550 tubes?
Many thanks for your cooperation.
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- 32 posts total
- 32 posts total