Yes, I heard the opposite using headphones (sennheiser HD229).
Sound systems have a huge impact because their response to the input is what you are actually hearing. But they can't create magic from crap, garbage in garbage out. And neither of these two sound 'bad'.
Boards: Kurzweil SP-6, Roland FA-08, VR-09, DeepMind 12
Modules: Korg Radias, Roland D-05, Bk7-m & Sonic Cell