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HifiMAN EF2A tube replacement (MOAR BASS)

post #1 of 3
11/12/10 at 11:34am
Thread Starter 

I've been searching for a different tube set for my hifiman ef2a that brings in a little more warm and better sub base response.  I havn't seen much reccomended for the ef2a, but there are a bunch of threads about the ef1 and other amps.

 

I came across a lot reccomending the Tong Sol 12AU7 Black Glass as being awesome in this department.  Only thing is, is the Tong Sol 12AU7 compatible with my Hifiman EF2A?

 

Are all tubes pretty much the same?

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post #2 of 3
11/12/10 at 11:41am
Thread Starter 

I've actually read that Mullard can produce some nice warm notes as well, but I'm pretty lost as to which one would work with the EF2A

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post #3 of 3
12/25/10 at 7:00am

You want the 6AK5 family of tubes, from Mullard that would be the CV4010 or M8100.

 

The Mullard would give you the warmer sound that you are looking for and is an improvement in all areas over the stock tubes, I didn't notice any difference in the sub bass response  but I haven't heard the stock tubes for over a year.  I'm now using Raytheons which are not as warm but are all round, another step up in refinement over the Mullards.  In particular, the bass seems tighter and hits (marginally) harder.  You won't notice a huge difference, it's a subtle but appreciable difference between those two and the stock tubes.  Can't comment on the Tung Sol.

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