2. amps-preamps
  3. 190421-3592

Gold Lion AX7 in tube preamp

Bought a set of these for my tube preamp thinking it might be a nice upgrade. It’s not. They seem to have very high gain and the frequency response is just bad. Vocals are very forward and if you turn things up it gets pretty piercing. I was thinking this would be a warmish preamp tube. What is the break in time and does it really make much difference? They probably have about 40-50 hours of preamp on time. I put the old Tungsols back in and all is good again. 

mofojo
yogiboy's avatar
yogiboy
5,732 posts
 

What tube preamp are you using?

jetter
3,041 posts
 

I have purchased a number of new tubes, especially 12ax7, 5751, el34 and kt77 and have to say that by the end of the listening session they were pretty much sounding as they were going to.

Once purchased a set of relatively inexpensive 12ax7s based on a recommendation by a member here.  They sounded bad when first used and stayed that way.

mofojo OP
2,304 posts
 

@yogiboy 

Using a Jolida Fusion preamp with some upgrades into a Benchmark AHB2. 

yogiboy's avatar
yogiboy
5,732 posts
 

Are you sure that a 12ax7 is the correct replacement tube for that preamp? 

mitch2
4,062 posts
 

For warmish/tubey sound;

Amperex 12 AX7

Mullard 12AX7

RCA 12AX7 long plate

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