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About the MB90 MkII M
The Icon Audio MB90 MkII M is a pair of high-performance mono-block tube power amplifiers built for use in either **Ultralinear** or **Triode** mode. It is described by Icon Audio as a versatile amplifier suited to modern, less efficient speakers, with a large power supply, medium/low feedback, and 4/8 ohm output taps. The design uses hand-wired point-to-point construction and a triode front end for low noise and detailed sound. The model is listed as MB90 MkII M on dealer pages, with KT150/KT120 versions referenced by Icon Audio.
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