I think you'd be surprised at the amount of definition you would achieve if you passively biamped your speakers. In my experiences the improvements go way beyond adding 3db. Your Tannoys need to be biwireable, that is separate taps for low and high frequencies at the speaker. To biamp you will need another pair of matching interconnects and speaker cables to make all the connections. You can find another pair of Aleph 30s on Audiogon.
It made all the difference in the world on my Revel Salons and Magnepan setups.
It made all the difference in the world on my Revel Salons and Magnepan setups.