#3761
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Remember, it is an easy way out to use a forgiving (i.e., warm) input tube, but you would be missing a piece of the fun offered by the transparency in these amps, especially in Triode configuration. IME, the GL KT-77 needs a PRE to be able to offer that ideal balance between midrange transparency and instrument timbres with enough body of sound weight. Not so with larger tubes, i.e., 6550 and KT-88, which I find too bold when pushed by the PRE. The PRE is ideal for all mid-size to small tubes (i.e., 6V6, 6L6, 350B ...). All my caveats relative to 6550 / KT-88 in terms of bold sound masking the nuances is solved when running the amp directly from the source. In my case, I use the balanced signal through the ZBit, and the results are excellent: All the body of sound and dynamics plus a level of transparency which had so far been elusive when coupled with the PRE. BTW, my PRE is using a setup oriented to transparency: 56's and CV-181 T. Curiously, the KT-66 in my setup is indifferent to using the PRE or going straight to the AMP ... It always sounds dull relative to the GL KT-77, VA 6550 or GL KT-88, so I'm not much of a fan of that tube anymore. YMMV. Last edited by Musica Amantem; 05-28-2017 at 04:31 PM. |
#3762
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This will certainly help me in finding the right sound for me. I have two sources connected to the LP-3a, one analogue coming from a TT via a phono stage (no volume controls), and the other digital streaming from a NAS via a LINN DSM's line out. What I have not tried yet is use the LINN Majik DSM as a PRE, by connecting it directly to the AMP, as checking that everything is ok with the Inspire PRE and AMP after a harrowing journey half across the globe was the first order of business That said, I will be experimenting with the Majik/Hot-Rod just to get a feel, of what the LP-3a does for the total sound, and take it from there. I have a GL KT77 on the way, and will repeat the same exercise with it, then the KT88. Then tweak the inputs. I will be looking for the right balance between clarity and warmth, as I think neither extreme is the answer, and neither do I believe there is one combination to rule them all as different genre would require different balance. Even the day's mood may affect what I want to hear for that matter Just as a side note. You may or may not have heard of a Japanese who goes to the extreme of designing an amp just for one, and only one, piece of music. I sort of feel where he's coming form, and would like to visit the restaurant he owns one time, but I don't have the will, skill, and time to do what he's doing. I think tube rolling with the Inspire is a good enough compromise for me |
#3763
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Seems like $65 is the going rate on line. I asked the fellow who restored and calibrated my Hickok if he would consider a calibration tube for you. If you're interested, I can hook you up with him... |
#3764
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Last edited by Musica Amantem; 05-30-2017 at 01:20 PM. |
#3765
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BTW, I just go the KT77 and listened to them just briefly, but my first impression is that compared to the KT66, it was as if you took a few steps back from the stage, and instead of hearing each sound separately, all the parts are still there but now you are hearing them as one coherent sound. Liking this already for listening to orchestral music. You could say KT66 offers better dynamics, but the KT77 is easier on the ear, and you could push the volume higher and still sound sweet. If it were chamber music, the KT66 are a treat to listen to as individual players stand out. I wonder what KT88 have to offer. |
#3766
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Last edited by Musica Amantem; 05-30-2017 at 04:01 PM. |
#3767
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BTW, I don't find the KT77 lacking in bass, not as big as the KT66 for sure, but still has very good presence. Must be my system. There's going to be an analogue audio fair in a couple of weeks in Tokyo. A number tube distributor, will be bringing his wares and I'm hoping to dig up some interesting valves. |
#3768
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#3769
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I have the TS6550 new production but prefer the pair of Electron Valve 6550's for $35 on the auction site. The TS is quite good though. IMHO, the Shuguang and Psvane CV-181/6SN7's surpass the old production tube I have for long term enjoyment. YMMV. |
#3770
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