2. amps-preamps
  3. 128441-18279

Has anyone compared K150 tubes and the stock EL34s in Primaluna integrated/amplifiers?

I have a Primaluna Dialogue HP Premium with stock EL34s.  When the EL34s wear out, which I suspect will be a long time, what would I replace them with?  The KT150 is intriguing to me. 

Has anyone compared these tubes, especially in Primaluna gear?  I'm wondering if I would lose the EL34s midrange in exchange for the increased power of KT150s.  It's hard to find, however, a bad review of anyone using KT150s. 

Thanks all!  
128x128jbhiller
smrex13
645 posts
 
Timely discussion for me.  I recently purchased a the Dialogue Premium HP Integrated, and I'm thrilled with the sound quality of the stock tubes. It's also the quietest amp I've ever had in my system.  I just ordered the KT150s and NOS 12au7 Mullards.  Can't wait to try them out.  I am running them with Harbeth C7es3 speakers in an all analogue system.

Will let you know how it all sounds once they arrive.

Best, Scott
meiatflask
151 posts
 
I have I have the hp dialogue premium power amp and was amazed at how dramatic the improvement was by using NOS mullards 12au7s in the v11& v12 positions.  The soundstage was so much bigger and deeper into proac monitors, which have a great soundstage to begin with.
pocketchange
19 posts
 
FWIW ..  Before plugging in a higher output example of the 6550,  PLEASE insure the amplifier design will handle the higher load.
Contact the designer of the amp and ask them if there may be a problem.  Without question, it WILL be a tearful experience when flipping the switch and not clearing the launch pad..  pc
smrex13
645 posts
 
I just realized that I hadn't followed up.  The KT150s are really amazing.  I have been using them for a few weeks, and I just keep smiling.  They provided both power and finesse with a great soundstage.  Nice bass, and an amazing midrange.  Very coherent from top to bottom.  Highly recommended.  

Scott
tablejockey
3,890 posts
 
I just may try the KT150 in my HP after hearing the results of this thread. 
https://forum.audiogon.com/discussions/considering-switching-from-audio-research-to-primaluna-troube...

Not being able to use the cage however, is a negative. Maybe no big deal since I don't have any small children/pets running around.

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