hello all is a dac worth buying. i have just brought monitor audio gs20 great sounding speakers. i have the yaqin 2100 amp yaqin cd3 buffer and marantz cd6003 cd player. they all sound great now. but someone said if i added a dac to my system it would be 8 times better. i find that a little hard to belive. so that is why i am asking this forum for there help. witch dac would be the best for me and can i also use my cd buffer with a dac or not. thank you all lee