Am not familiar with the Havana, but switched from Musical Fidelity to TADAC. Paul is usually very responsive via email. His product, for the price, is unbeatable with exceptional soundstage and clarity. The big feature is the "Tubines" knob, which allows you to control the tube output. I bought his TADAC a few months ago, and replaced his stock 12AU7's with a pair of french Mazda's. The sound is incredible!
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