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RE: Groove EL34M xf2

Posted by NativePrairie on April 28, 2012 at 14:26:53:
I'm not familiar with harmon electric, but the Groove Tubes XF2 copy is a wonderful sounding EL34. The mid and top end are very detailed but still very musical. In a modded ST-70, I liked them better than the original Mullard, RFT dimple tops, winged C, EH, Matsushita, JJ, hmmm what else have I tried? The Groove Tubes are in it now (but get rotated occasional with the 6P3C-E). And this is coming from a guy that does not think highly of many new manufacture tubes.