The iFi Audio Zen DAC is an ultra Hi-Res DAC (digital to analogue converter) that features USB input and either single-ended outputs (RCA / 6.3mm headphone) or balanced outputs (4.4mm headphone by Sony or 4.4mm line out) options. Packed with gain adjustment (power match) for your headphones should they require more power and also TrueBass which makes your listening experience even more enhanced! Audition them at Stereo – The Headphone Concept Store Plaza Singapura #04-06 I Westgate #01-35 Upgrad