Correct amp for Dynaudio Audience 42?

I stupidly bought a pair of Dynaudio Audience 42s for $275 without thinking, let alone auditioning. Now I'm wondering if my decade old Marantz PM7000 (which claims to put out 155 watts with 4 ohm speakers) and SA8001 SACD player will actually get the best from these 150W 4 ohm speakers.

Anyone know?

If my amp comes up short, would I be better off waving goodbye to it and buying a new Marantz PM5004, even though it puts out fewer watts? (It seems like some amps with fewer watts are actually superior, but I don't understand why or how.)

My priority is to have an affordable compact system to play jazz greats, 70s funk records, and, occasionally, the melancholy MP3s of contemporary singer songwriters.

Thanks in advance for any help.

~Eric