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
Merely wondering whether anyone has news of any recent development on this?

Perhaps slightly tangential yet of interest. It would appear that Allnic Audio are now shipping their KT120 amplifiers, T2000 integrated, A2000 stereo power amp and M3000 monos, sporting KT150's.

" "After listening late into the evening I can say that installing the KT150 valves into the T2000 yesterday has transformed the sound to an extent I would not have thought possible.

It has dramatically improved in all respects. Everything is much more clearly defined, better articulated and more accurately represented.

The first most notable aspect is how much more quiet the background now is.An 'electronic' background has been replaced by the real ambience of the concert hall.

When listening to a favourite 1984 LP recording of Mahler's 4th and with eyes closed there was no hint of there being speakers in the room at all. What was there was a vividly clear sonic picture of the orchestra in the concert hall and I was sitting midway back in the stalls.The physical space was practically visible.

Each instrument was more accurately represented in terms of its characteristic tone, colour and dynamic range and also where it was in the three dimensional space of the concert hall. It was both proportional and in perspective.

The other improvement was in timing and flow. The music flowed more naturally, with more energy and life making the listening pleasure more intense. The KT 150s have made a significant improvement, which for a couple of hundred pounds
is remarkable."

Way to Go AR Central( Where is that I'm with stupid emoticon when you need it)
I was going to get a set of 150s, but now the fun has been ruined by all this yammering...
@Andrewrona, I was conveying the information from the position of a somewhat frustrated ARC owner, A form of self flagellation if you will!
Frustrating is right.

I will start with I have not heard KT150's yet, and don't own an Audio Research amp...

I do have an amp that will work with them however.

But I will say this thread with Audio Research probably went way over the top with ARC owners being way too concerned, and way less about the KT-150.

I believe Audio Research is probably the biggest Tube manufacturer still in the united states, maybe the world.

My answer to why Audio Research has not "Approved" this tube is by far simpler than what is being talked about here...

They are afraid far less about the KT150 killing YOUR amp than they are about it Killing their Current inventory when nobody wants to buy the 10,000 or who knows how many KT-120 matched tubes they already have in inventory ready to go!

As soon as they say 'GO' on the KT-150 officially on the website or wherever who is going to buy all those already KT-120 AR certified sets sitting on the shelf?

Just something to think about.