FiiO X7 Portable High Resolution Music Player. Experience digital music to the fullest with mastering quality lossless playback. Designed originally for high-end home audio, the X7 is one of the first devices to utilize athe original ESS ES9018S in portable audio. Its 8 output channels can be bridged 4-a-side for an astonishing 135dB S/N ratio and dynamic range, while the THD is as low as - 120dB. Compared to the ES9018K2M popularly used in portable devices, the original ES9018S features 6dB higher SNR and dynamic range at the cost of higher power consumption, a cost that the X7 OS willing to pay with its robust power section. So buy this FiiO X7 Portable High Resolution Music Player - £499.99.