#3791
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That may very well be, but I've had bad luck with other JJ products, either dying on me or sounding mediocre. It is probably circumstantial and they may have improved their act lately. It is good to know the specification of the KT-77 is the reason behind their great sound and not a particular manufacturer's version. Besides, the JJ's are 33 % cheaper.
Last edited by Musica Amantem; 06-03-2017 at 02:50 AM. |
#3792
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#3793
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#3794
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I passed by a tube dealer today to get a pair of KT88, and while I was looking around in the 6L6GC section, the store staff introduced me to a pair of Phillips ECG 7581A (Sylvania made). It was their last pair in stock. He described them as warm and having a wide soundstage. I decided to try them out, so came home with two pairs instead of one I tried out the 7581A first. Pops, Rock, hmmm I felt I preferred the KT66, or even the KT77. Then I played a Bruckner 9 by Mehta and the Vienna Philharmonic record, and wow did the 7581A just sound sweet. By this time they just had about 5 hours on them, yet they were already singing. I think like these more than the KT77 already for orchestral music. I liked them so much I postponed listening to the KT88 for another day.
They glow very nicely in the dark too. Last edited by goldhorse; 06-04-2017 at 01:59 PM. |
#3795
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Those Philips 7581a tubes can be pricey. Likewise for the GE versions. I don't know how well today's "Tung-Sols" reissues match up with them. I've read some descriptions which state that the new T-S specs at the vintage 35W dissipation standard. But I've read other sites which state that they top out at 30W, and are basically relabeled 6L6GC tubes.
I did see a post by Dave Gillespie on AK praising the 7581a. That is high praise from a tube equipment guru. Last edited by Bombadil; 06-05-2017 at 12:38 AM. |
#3796
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I had a chance to more thoroughly test the GL KT-88 direct to the AMP using the balanced signal from the DAC through the ZBit. My observations: 1. The deepest bass I've ever heard in my rig, without masking essential details. 2. Slightly less "air" between instruments than the 6550, but with a larger body of sound and aplomb. 3. Shares the 6550's faithful instrument timbres. This puts the GL KT-88 on par with the 6550 in my system, each with it's particular strengths. These two tubes excel when not pushed by the gain of the PRE, allowing their natural sound to come pristinely through. As stated earlier, in the case of the GL KT-77, I prefer the PRE configured for sound opening, as that boost helps it develop higher levels of body of sound and bass combining the best midrange in the business. Currently, then, I enjoy all three Kinkless Tetrodes enormously, and will be working into dialing-up the 350B and 6P3S-E with the help of two new input tubes coming along (Shuguang UK 6SN7, 6B8G w/adapters, and the RED MOD High Pass filters). Life is good! |
#3797
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#3798
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With the 7581A, I'm interested to see how they would sound with 6SL7's in the gain stage. These on the other hand may benefit from the extra gain. We'll see. Life is good! |
#3799
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#3800
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Now that I'm using the Brimar 5Z4 GY as a rectifier with these, I'm running the same risks as with the 5AR4. I stated the contrary on an earlier post, so I'm correcting it here: both are indirectly heated (Cathode). I could pair the GL KT-77 with the SE 274B (which sounds nice also), but I need to really confirm which combination sounds better, as low Vdrops seem to have an edge with my Kink-Tetrodes. |
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