I listened to it very briefly. Very smooth and grain free, but seemed to spotlight the upper mids a bit. Very brief demo with Magnepan 1.6 QR, VTL 7.5, Levionson 390.
I have to agree with Honest1 in that the 275IV is very smooth and grain free. Given the stock small tubes, it could accentuate the upper mids; however, like any other tube amp, it lends itself to tube swapping. Changing to NOS small tubes can bring out the best.
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