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New KT150 tubes?

Has anyone any experience with these pretty new tubes. There are already one or 2 amps I know of, that use them. The review of one of these amps in a UK magazine suggested they were a little warmer and more natural sounding than the nearly new KT120's

The article also suggested they were a straight swap for KT120 based amps, with no adjustment necessary. They are more than twice the cost of KT120's, but still not too costly compared with NOS tubes. I know changing from KT88's or 90's to 120's. did require some amp modification. I have an ARC reference 75 and might want to try the new tubes at some point, ARC don't seem to have a customer E-mail service, to ask the question
david12
tsushima1
1,165 posts
 
11-13-13: Hifigeek1
Regarding the KT-150. It is not known yet if this tube is a drop in replacement for the KT-120. I'm awaiting info from the ARC engineering dept. on this issue. The KT-150 puts out more power than the KT-120 which could mean it draws more heater current than the KT-120 does. When I get more info on this, I will share it here. Until that time, I would be very careful using this tube.
Hifigeek1 (Threads | Answers | This Thread)

Good morning Hifigeek1.

I was musing upon whether any further 'evaluation in progress' reports may have filtered out from ARC Central ?

Rgds.
hifigeek1
770 posts
 
Nothing yet. Still life testing
tsushima1
1,165 posts
 
Thank you for the update Ffg1 , hopefully we may receive some direction early-ish in the New Year .
hifigeek1
770 posts
 
Talked to ARC yesterday. Tubes are still in life test but apparently will be quite a bit more costly than the KT-120. Whether people will want them at the price they end up being, is difficult to say but KT-150's may not be cost effective.
dbarger
215 posts
 
Are there any integrated amps out that come with KT150's?
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