James,
The current BP26, with the external power supply, could be considered somewhat a 2 chassis preamp. However, has anyone at Bryston considered a true mono design with each channel as a separate unit and a separate control unit? Something similar to what Pass Labs does with some of their preamps. With the Cubed series improvements, I was just thinking of what could be in the plans for a successor to the BP26. Such a preamp would provide the ultimate in channel separation and take advantage of the dual-mono design used in all Bryston amps.