There are monoblocks in the works. They will follow shortly thereafter the launch of the stereo. They will cost the same, $7,500 each. They are identical to the stereo inside, only difference is one less tube, a few different PCBs and a different back panel. They have minimally more power 300 watts instead of 250 into 8 Ohms. This isn’t a power thing. Let’s face it, 300 watts into an 8 Ohm speaker and near twice that into a 4 Ohm is plenty for any situation.
No, the deal is impedance, current, isolation. Instead of 20 MOSFET outputs on the stereo, the mono has twice the number at 40, thus the output impedance is cut in half, the damping factor double. Instead of sharing a power supply between two channels, the beast is dedicated to only the one and for any given output signal, just loafing along with massive current headroom available. Lastly, two power cords, two transformers, the physical isolation of two chassis - all play into achieving a serious step above the stereo single piece.