Tube ---- Ei 12ax7


Does anyone have experience with these tubes?

I have a Jolida JD-100 and experimenting with tubes. I think I want to try these tubes next, but before I plunk down my cash for these bottles I thought I might ask for experiences or opinions.

So far I have tried.....

EH 12ax7
Vintage RCA 5751 triple mica black plates
JAN GE 5751 grey plates

Its somewhat of a tossup right now between the RCA 5751s and the EH 12ax7s.

The RCAs give great bass (for a tube) and smooth dynamic sound with good seperation.

The EH 12ax7s give awesome mids/vocals with a soundstage that goes to the neighbors house, but they are a little bass light.

Any and all inputs are kindly appreciated.
distortion

Showing 3 responses by trelja

These came with my Jadis integrated, and I have always found that amp to offer excellent tone. Like Newbee pointed out, not warm, but not cold or sterile either. I find them to offer a nice balance.

It's nice to hear Zaikesman say they're the best of the current production, that will save me money down the road. Maybe when it comes time to replace them, I'll go for NOS Mullard or Telefunken, but we'll see.

I can also say that their power tubes are pretty bulletproof. 4.5 years and still going strong, on an amp that's on again off again on again all the time by several family members. Of course, NATO bombing the plant probably is the reason for the QA problems of late.
Zaikesman, hello. Have you had the opportunity to give the Ei KT90s a listen in your amplifier? If you, we are curious to your impressions. Take care, Joe