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Alternative to 12AX7-EH tube needed...new to tubes

I purchased a new to me preamp a couple of weeks ago and would like to replace the tubes. I am a first time tube owner and would appreciate any and all advice. It's an Aronov and is connected to a McIntosh 752.

I would like to lower my noise floor and reduce how hot the signal is on my preamp out. Basically, I want to be able to turn the gain on my amp back up.

Would a Sovtek 5751 be a good alternative?

I want to keep my highs detailed, lows fat, and the mids rich and full.

Thanks.
techguy0192
racamuti's avatar
racamuti
362 posts
 
Call Andy at "Vintage Tube Services",or Jim McShane. Both of these guys are the real deal when it comes to recommending and supplying good tubes that are quiet and tested to the max.
Good Luck!!
saki70
907 posts
 
Go to "Joe's Tube Lore" at Audioasylum.com . He has done a rather exhaustive study on input tubes and has compared most all of the different types of small tubes .
I found it a nice place to start .

Good luck .
blindjim
3,092 posts
 

Both posts here are excellent ideas. Andy @ Vintage Tubes, and Joe's tube lore...

I'm wondering though, why move off of the 12AX 7 TO BEGIN WITH?

There are a lot of these types of tubes around which should meet your needs. Amperex Bugle boy 12AX7's ought to fit very well. Quite extended, dynamic, and very clean & clear window to the music. I use a combo of these and RCA 12AT7s in my preamp.
yogiboy's avatar
yogiboy
5,661 posts
 
You can reduce gain with 12at7 40%,12au7 80%,jjtesla makes both of them,tube depot is a nice place to start.
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