no, i dont think its the hd phones, because i dont havent recorded with them on in booth, on my preamp i have the moniter mix at half and i had the output level 2 or 3 clicks over half, which makes the volume on my speakers go up and in the hd phones, ill try putting them both on half tomorrow and see if it makes a difference, but opey, ONLY my vocals should play back on mono, there should be no beat aswell, correct?