I bought my Cronus from an Audiogoner and it had been modded (basically the Magnum upgrade before Mark and Nick gave it an official name).
When I got it the stock EL34 had been replaced with KT77s. The KT77s recently passed and I replaced them with EH KT-90s from BOI AudioWorks. I think they sound fantastic! Very punchy and detailed compared to the EL34s.
When I got it the stock EL34 had been replaced with KT77s. The KT77s recently passed and I replaced them with EH KT-90s from BOI AudioWorks. I think they sound fantastic! Very punchy and detailed compared to the EL34s.