In addition to more power, a potential advantage of monostrapping (i.e., paralleling) Ralph's amps is that the resulting output impedance would be cut in half. In the case of the M-60 Mk 3.3 for example, the output impedance of a monostrapped pair would be 2.05 ohms instead of the 4.1 ohms that is specified for a single monoblock. That would seem likely to significantly broaden the range of speakers that would be suitable matches for it, and potentially eliminate the need to use a Zero autoformer in conjunction with many speakers.
Regards,
-- Al
Regards,
-- Al