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Signal tube versus power tube, sound impact?

My mono block has eight KT 88 tubes(power tubes) and six smaller signal tubes. I'm using the stock tubes that came with each Mono. I think they are JJ tubes.

Rather than replace them all would it be best to change out the signal or the power tubes? Not sure how good the JJ tubes are but I hear they may not be the greatest.

emergingsoul
cdorval1
23 posts
 

Thanks to the OP for getting this started. I know it’s been argued about over and over and round and round. But I’ve enjoyed reading the posts, including the links.  This all will be settled by approximately never. Yet it remains interesting to read about. To me. 

testrun
218 posts
 

I would replace to signal tubes first, research and get the best you can afford.  Why they will last.  You will have to replace the power tubes because they burn out much faster.  Just my experience.  

pcrhkr's avatar
pcrhkr
261 posts
 

I use JJ KT77s. They sound fantastic on my Primaluna. I have not tried their preamp tubes.

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ianderson
91 posts
 

Djohn….
My comments relative to tube types would be the same with either gain (12AX7 or 12AT7) 

if you need more info pertaining to the Herron, let’s start a new thread or move to PM and keep this thread on topic.

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