Groove Tubes EL34LS vs SED

to Gmuffley - are the groove tubes el-34ls teslas? how is the high end? The Siemens high end is fine, but not the "slam".Have u compared with the SED? I'm about to buy new sets and its between the groove tubes and sed. Based on this feedback, i may go for the groove tubes. BTW, i am running Brimar 13D5 and Sovtek 12AX7LPS NOS circa 2003. cables are the new Oval 9s. THX everyone!

Whodiini...Aside from the original TeslaE34Ls I also have JJ Tesla E34Ls which, to my ears, sound extremely good too. You might want to check out the BOI AudioWorks site.

By the way, For what it's worth, I have tried the Brimar 13D5s with my Air Tights. Though they present a very nice sound, I found them somewhat light in the bass (the area you are concerned with). I strongly recommend you try those Mullard "boxplates" in the 12au7 sockets. You might be pleasantly surprised.

el34's are supposed to be light in the bass...alays have been and ill be....their magic is the midrange.

to Gmuffley - are the groove tubes el-34ls teslas? how is the high end? The Siemens high end is fine, but not the "slam".Have u compared with the SED? I'm about to buy new sets and its between the groove tubes and sed. Based on this feedback, i may go for the groove tubes. BTW, i am running Brimar 13D5 and Sovtek 12AX7LPS NOS circa 2003. cables are the new Oval 9s. THX everyone!
Whodiini

It is my understanding that the JJ/Tesla El-34LS and Groove Tubes are the same. The ones that I have were made in the Czech Republic and were purchased from Penta Labs. The high end response is excellent, but perhaps not as good as the very best El-34 tubes. The SED tubes are very nice, but don't have the slam of the El-34LS.