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Looking for brighter tubes

Attention tube heads: I'm looking for brighter (more treble...not higher amounts of glow and chrome) tubes, if they exist. My amp (Jolida JD502P) has a well regarded bunch of Russian Tung Sol 6550s and 12AX7/12AT7s but I'm wondering if there's anything out there that imparts more sizzle in this amp. I do like the amp as it is...but hey..."rolling rolling rolling, keep them tubeys rolling...
wolf_garcia
lapierre
547 posts
 
Wolf.

5751 tubes will make amp smoother on the top end.

You can also purchase 12 types with more lush sound like Black Sable Tung Sol with gold pin or Mullard ECC83 for richer, lush mids and open top end.

Sent from iPhone
albertporter's avatar
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albertporter
4,949 posts
 
Try Telefunken 12AX7, great midrange and probably more high frequencies than the Russian counterpoint.

For 12AT7 the most HF info I've experienced is the pinch waist Phillips. They are difficult to find and probably expensive by now.
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drrsutliff
834 posts
 
What 12ax7 and 12at7s are you presently using and which ones have you already tried? Also have you tried any KT88s in place of the 6550s?
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jazzerdave
163 posts
 
You'd probably find the NOS German tubes to be your best bet (Telefunken or Siemens).
detredwings
162 posts
 
You should consider changing the four.22uf coupling capacitors and the two .47 capacitors. They are made in China by CBB and they are dirt cheap. That is why they use them. Not for their sound. Good for their price but easily outdone.

Siemens E81CC or ECC81 have nice extension.
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