Could you manage the PM7004? I haven't heard one but here's some good news for you via its predecessor, the PM7003, supposedly 70wpc. It won Oz Best Amp of the Year, with a Lab test reporting it at 101wpc into 8ohm @1kHz down to 91wpc at 20Hz and 20kHz and 135wpc into 4 @ 20Hz and 20kHz, significantly higher in the mid-frequencies.
The PM7003 was likened to a refined PM-7001-KI.
"(at its price) ...on the basis of the sound quality it delivered during my listening sessions—and the performance it delivered on the test bench— the PM7003 has the goods, the looks, the power, the pedigree and not least the price, not only to get it past the post but to leave the others more than a few lengths behind." OzHiFi
Assuming the PM7004 is further refined, it sounds like a pearler (sorry). But if its suitable, check out its speaker connections (nothing major).
* According to the quoted sources, Marantz is renowned for understating (or at least being conservative with) all its specs, as shown in the PM7003.