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Hi,I have decided to try and roll some tubes in my Consonance Cyber 800 mono blocks.Im thinking of a matched octet of 6550 tubes.which 6550 has a nice tight bottom end with a smooth midrange and smooth top please.....
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The new issue Tung Sol's are really nice sounding in my TAD 1000's. Nice tight bass, lovely mids and a relatively extended top. I'll be trying some EH Big Bottle 6CA7's which my amp also takes.
I have been using the new Tung Sol 6550s in my VTL ST-150 for about a year now and have liked them quite a bit. They replaced the SED "Winged C" 6550s. In my system the Tung Sols had a tighter more controled bottom end than the "Winged C". The mids were about the same in both tubes. Very nice. The "Winged C" had more top end sparkle than the Tung Sols but not by much. I could live with either of these but I am leaving the Tung Sols in until they wear out. I will probably try the Shuguang KT-88sc after that.
I'm listening to a set in my newly rebuilt Dynaco Mark IIIs and after a few hours of break-in they sound really good. Nice bass, clean highs - no glaring problems. I haven't had a chance to roll in anything else yet - so take my recommendation with a grain or two of salt. You may also want to try some KT88s - some people have reported good luck with the Shuguangs.
GE 6550's have the best bottom end that I have heard in 6550 tubes. Jim McShane used to have a bunch of NOS 6550A's. Send him an email
John
Thanx John .I should have explained that im in the uk and realy would like current production tubes as NOS are too expensive for me.So which current production 6550 has a nice tunefull tight bass and smooth mid and top please....james
I have ARC VM-220's which have eight 6550's on each side. ARC ships them with Winged C's, which I ran for 1500 hours. I then changed to reissue Tung Sol's which, in my system showed as well or better in every respect - not just in terms of bass, highs etc., but even more so in terms of the quality of the sound - especially imaging, dimensionality, coherence and clarity. In a number of pieces, I was able to hear an instrument or a voice which was inaudible with the Winged C's. The Tung Sol's were a revelation.
I dont know too much about new production 6550's but I agree with Kstagger on the KT88's. The Shuguang KT88SC from Penta are phenominal tubes.
John
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