Main Features:- DSC with vacuum tube and isolated design, high efficiency and high fidelity without noise- Preamplifier function, easy access to your active speakers or amplifier- Decoder / headphone amplifier design, in order to reduce the bile duct fever on the decoding part of the influence- Using advanced CM6632A + AK4490EQ audio chipset. Support PCM up to 384KHz / DSD512- To avoid effecting decoding part from heated vacuum tube. All aluminum alloy structure cabinet adopts isolated design which reduces temperature drift and interference- Humanized programmed control and built-in reply protection to avoid impulsive sound from power on / off. That also protects hearing and device- To meet with various connection requirements, T1 comes with USB, optical, coaxial, RCA analog four kinds of input jacks and headphone jack, decoding RCA, preamplifier output jacks Brand: SMSL Model Number: T1 Special Feature: Mini,Portable,Wireless 1.435 Package weight: 1.487 kg Product Size(L x W x H): 14.50 x 9.50 x 7.00 cm / 5.71 x 3.74 x 2.76 inches Package Size(L x W x H): 19.00 x 19.50 x 14.50 cm / 7.48 x 7.68 x 5.71 inches Package Contents: 1 x SMSL T1 Multi-function Decoder Headphone Amplifier, 1 x Bilingual User Manual in English and Chinese, 1 x Power Adapter, 1 x USB Cable, 1 x Power Supply Cable, 1 x CD