Hello, I am currently using Yamaha As500 with wharfedale 10.2 bookshelf speakers. My source is Allo Boss 1.2 player. I would like to change the amplifier. I would like to change to some other brand like Marrantz. I am happy with AS500's details, but I read a lot that marrantz is more balanced. I am not looking for DAC in amp. I am happy with Boss 1.2. Let me know the difference between Marrantz PM5005 and PM6006 other than 5 Watts additional power and DAC. Would PM5005 sound good with Wharfedale 10.2 speakers? My purpose is only casual listening. I have a different setup for my critical listening. Thanks for your suggestions