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  3. 157535-134614

... How to select tubes for line level preamp ...

Hi to all...

Kinda happy with the sound of my present system: older Marantz SA-8001 SACD, into Wolze Line Level preamp with 2- EF86s and 2-12AX7 tubes, and pre-out to a discoed Yamaha HTA-5550, into a pair of KEF Q1s. The sound is really nice )
amazing midrange ( would be happier if the center/vocals were pushed more forward), adequate bass and thumping drums - but the upper sparkle (cymbals and other higher pitched sounds) just don’t sparkle in comparison (or like I think they should).

How do I keep everything I really like and expand what I want to find? Is there a chart or reference guide to tube characteristics? Sounds like strict experimenting is an expensive guessing game...

Help? Suggestions?

insearchofprat

Showing 4 responses by insearchofprat

insearchofprat OP
189 posts
 
DeKay

Did you /do you have one of these - it’s been "rumored" there was less than 10 ever available: any opinion /review from your memory?

If you can explain please what is the differrence between a 12au7 and
a 12ax7 (other than having this one Wolze piece - I have no reference to tubes what so ever).

Thanks...
insearchofprat OP
189 posts
 
DeKay

Thanks for the courtesy of your reply... 
insearchofprat OP
189 posts
 
DeKay

These came with the unit when I bought it...

This is the info printed on the tubes: (2 of each)

(In silver lettering): USA, above 12AX7A (in a thin silver oval)
                                  RCA (in gold lettering), else where on the tube
                                  Other info on tube worn so it can't be interpreted

(in gold lettering): EF86 6J32P Made in Russia
                                 SVETLANA

AND You think /suggest?


insearchofprat OP
189 posts
 
DeKay

... thanks again Bud... Be Well, Best Wishes. Bill
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