Audiophilepure

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“The MicroZOTL2.0 is also unusual in that it generates very little heat and owing to the low-stress design enjoys a 10,000 hour tube life. It must also be noted that with tube rolling, the sound characteristics of the MicroZOTL2.0 are susceptible to change with various accounts claiming for the better. Having not tested any of the NOS tubes myself, though, it is difficult to recommend any.”