@lowrider57 & @pesky_wabbit thanks for the recommendation
@djspinner thanks for the pointer. yes i use single ended... will try XLR and report back!
@noske I am new to audio and no expert here. that said, it's not a comparison of 804S to other speakers. there is a huge difference with or without Freya+ in the middle. if you say the perfect bass scores 10 and 804S is 6, then when i have Freya+ i got probably 3 or 4... anyway, now i took Freya+ out and am decently happy with the bass (till i hear something better...).