@jfrmusic : This is NOT true at all for the equipment I have tried and own (A-80, C-47, SACD 770 and AC-6 cartridge). On the contrary, with the above equipment, it is world class bass. The speakers I have tested the A-80 with are B&W 801 Matrix S3, Wilson Benesch Discovery II, Yamaha NS-5000, German Physiks Unicorn and German Physiks PQS-302.
Never heard the P-4600, thus I have no opinion. It should be good. Make sure the preamp and source are up to the task. However, the new line up is significantly improved over past generations.