Preamp Tubes for KR AUDIO 18 BSI

Mr Mcfarland, thanks for your reply =)

I never knew it has that much to know, i thoght it is just a tube.

The tubes are Ei- Yugoslavia ECC-82 an the other set are 5687WB.

The treble gone abit, never happen before, so i guess it is time to be replace them? They were long here...

So type of tubes should i be looking into replace them?

currently, it have all the juice from treble to bass, but the soundstage is not as clear and 3D as solid states amps, thats the field i want to improve on...

or that part is not done by tubes?

Please teach the silly me hehe, thanks =)

hehe, PERFECT =)

Thanks alot people, i guess i'll got hunt those tubes...

arhhh... does the 5687 has more variant?
There is only a pair of old 5687 out there and no 6900 or 7044.

Dual Triode - does it mean all dual triode can be use?
I saw a Tung Sol Gold Pin 12Ax7/Ecc803S is dual triode too...

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 =)