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Are MULLARD NOS EL34s and LTA ZOTL40 REF worth the price of admission?

I'm considering giving an older Linear Tube Audio (LTA) ZOTL40 Ref amp an audition.  LTA has a factory upgrade that includes upgrading to Mullard NOS EL34s for $800 (or less with additional discounts).  I am wondering if quad set of old-stock Mullard EL34s are worth the $800 price of admission?  I don't pretend to know what anyone else's budget is but $800 for quad EL34s seems like a lot.  If I'm paying the premium, it better be across the board and not just improvements on chamber music or obscure Chinese opera (no offense intended).  Does anyone have experience with either NOS Mullard tubes or LTA ZOTL40 Ref amp?  If so, please chime in.  Thanks.
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jjss49
6,608 posts
 
the mullard issues do not resemble the old stock ones in sound... whether the SQ difference is worth the extra cost is a function of one's wallet and system

but be sure, the difference is undeniably there
rushfan71
291 posts
 
I agree with edi retro.
I bought a octet of NOS Mullard EL34 XF2s from Andy at Vintage Tube Services and I couldn't be happier. He is a wealth of knowledge when it comes to tubes and is glad to share his experience.

rushfan71
291 posts
 
I agree with edi retro.
I bought a octet of NOS Mullard EL34 XF2s from Andy at Vintage Tube Services and I couldn't be happier. He is a wealth of knowledge when it comes to tubes and is glad to share his experience.

aj523
360 posts
 
I just bought the LTA z40 integrated with the NOS Mullard EF2 tubes. Will let you know my impressions shortly.  
desferous
29 posts
 
a LTA is on my wishlist.  Great to see the discussion. I'm excited to hear how it goes!
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