you do not need a preamp but a good one can improve the sound greatly.
it is not so much about voltage but clean voltage and robust power supplies capable of fast changes and that greatly improve drive and dynamics.
the analog section of DACs and digital players are what separate the good from the great and as so with the preamp feeding the power amp.
look at the Rogue Audio RH-5 Linestage Headphone amp. Review in Stereophile.
it is not so much about voltage but clean voltage and robust power supplies capable of fast changes and that greatly improve drive and dynamics.
the analog section of DACs and digital players are what separate the good from the great and as so with the preamp feeding the power amp.
look at the Rogue Audio RH-5 Linestage Headphone amp. Review in Stereophile.