I have heard the 750 matched with a beefy Mac tube amp.The active mode sounded ok,the passive mode dry amd uninvolving.I would match the 750 with a C.J-55.The 750 needs all the liquidity it can get from an amp.Its just too dry.As far as the Aleph-3 as a match,maybe so but not in the passive mode.You would never get enough volumn and dynamics.The Alepth-3 needs more than unity gain.
