NuForce Icon HD (Blue) USB 2.0 Full Speed compliant and 1.1 supported, 8-96kHz/16-24-bit, Audiophile-grade DA converter, USB DAC: USB 1.0 and 1.1 up to 44.1kHz/16-bit, USB 2.0 Full-Speed up to 96kHz/24-bit, RCA Output: 2.6Vrms (cuts off when headphone is inserted) Headphone Output: 6.3mm headphone output jack drives headphones up to 600-Ohm (96 mW@600-Ohm) THD+N: 0.001% @ 1kHz, Dynamic Range, SNR &gt; 100dB Power Requirement: 15V, 1.6A, 100-240VAC (Worldwide AC), Dimension: 6" x 4 1/2" x 1", Weight: 1 lb