2. amps-preamps
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Preamp Tubes for KR AUDIO 18 BSI

I need some help on this amp here, i've done searches with the tube # on the internet and nothing really shows up...

what can i use to replace those 4 input tubes?
it will be such a great help...

going to modify it and going max, heard the result is nirvana...

Even now, im' at 90% of satisfaction, and so far i never gives me a problem.
deramg
ecclectique
509 posts
 
Hello Deramg. No sir, you cannot use any dual triode tube. The 6900 or the 7044 will sub for a 5687 but do NOT use a 12ax7/ecc83 or ecc803 as they will not work.
ecclectique
509 posts
 
Deramg. What type of 5687's are you using now. The 12au7 should have the bigger influence in the KR.
deramg OP
4 posts
 
I think now it is using the Jans Philips.

I don't know when these tubes are purchased and start using... and i don't know how to check the health of those tubes, so i better replace them all at once... life long trouble free hehe.

Correct me if im wrong guys, starting a few days ago, some part of extreme side of the treble sound are gone/lost. My favourite songs became obvious faded. Does it gotta do with the output tubes (300B) or the preamp tubes more?

Sorry for my igorance... but people who don't ask are more silly =)
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