I am new at this so overlook any goofs. I purchased a pair of AKG 701 headphones. I have intended to play them thru my Rotel preamp which has a special circuit built in for headphones. Butr I have been told that I might need a headset pre amp as the Rotel is not sufficient to get the best out of the headphones. I hate to spend much more at this time. Any comments=== or suggestions on the preamp I would need? Thanks for sny help. Jsck B. North