If you read Bose audio philosophy then they are not for big sized amplifiers leave alone tube amplifiers like McIntosh and large speaker like Sonus Faber. Selling these speakers means deviation from their own philosophy. It's like cheating their existing customer base where they have spent millions of dollar telling everyone else is wrong.But that’s mere speculation. What’s the reasoning for it?
If I was a Bose speaker customer, I will feel cheated now for having wasted my audio life listening to those puny cube speakers If they go hammer and tong selling Sonus Fabers. Hence they sacrifice either of the one model If they want to retain their design philosophy. They will never tell they were wrong about the cube speakers.