Of your choices OP I'd go Luxman without question. It makes far better power into 4 ohms than that Mcintosh does. IMHO the appropriate comparison would be 505>5300, 507>7200 and 509x>9000/12000.
Integrated Amplifier for Sonus Faber Olympica II
Hello Guys,
I've just acquired a brand new (old stock) Sonus Faber Olympica II speakers. I'm now in a search of capable integrated amplifier to drive them correctly. Currently, I'm owning cheap NAD receiver which I'm looking to upgrade it. Several choices came up on my mind: McIntosh MA5300, Luxman L 407Ux MKII, Primare i25/35 Prisma, Marantz Model 30. Pathos Logos MK2 .. etc. I have decent Project Dac box S2+ DAC so embeded DAC would be big plus. I would also accept used equipment. My budget limit is under 5k.
Thanks!