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In Reply to: Not the answer to the question that I asked.... posted by viridian on January 12, 2017 at 15:40:09:
None of their designs have ever supported the higher bias current of the KT-120. You can't just drop it into any amp. Bea Lamm does not recommend such a swap and Luke is more specific as to why they haven't adjusted the circuitry in order to do so:
"The primary reason we don't use the KT120 is that we don't find their sound to meet our sonic requirements, with a grainy, forward sound, akin to that of the 6DJ8/6922 series of tubes. The KT120 seems to us to homogenize the sound, such that nuances and fine inner details get masked. There is a suppleness in the sound of the 6550/KT88 that seems to be lacking in the KT120."
Audio Beat review of MB-450
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Follow Ups
- It really is the same question - E-Stat 19:47:29 01/12/17 (2)
- Interesting description of the KT120 vs. 6550 vs. KT88 - JoshT 20:34:53 01/12/17 (1)
- RE: Interesting description of the KT120 vs. 6550 vs. KT88 - Uncle Mike 03:51:01 01/14/17 (0)