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
True. True. 150s are priced to the current market, and my hoping they'd be cheaper eventually is simply wishful thinking...today if needed I'd just get another set of matched 120s as they seem to be a relative bargain and sound great.
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.
Thank you for the update Ffg1 , hopefully we may receive some direction early-ish in the New Year .
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.