Interface
Audio Input	- RCA for analog input - Optical for digital input
Audio Output	- RCA for analog output - Optical for digital output - Coaxial for digital output - Subwoofer out for an active subwoofer - USB - Ethernet RJ45
Reset	Short press to reset the WiFi, long press to restore factory setting
IR receiver	Remote Control
Display status info	OLED display panel
Streaming protocols	AirPlay, DLNA, UPnP, Spotify connect and Qplay
Network	Wireless connection IEEE 802.11 b/g/n 2.4G Bluetooth 5.0, AptxHD Wired connection Ethernet RJ45
Audio parameters
Music format	FLAC/M P3/ AAC/ AAC+/ ALAC/ APE/W AV
Audio decode	24bit, 192kHz
Frequency response	20Hz~20kHz
THD+N	0.03%
SNR	110dB
Control applications	4STREAM for iOS and Android-based smart devices iTunes for MAC and Windows PC Foobar2000 and other compatible third-party apps
Music sources
Online streaming services	Spotify, Internet Radio, QQ Music, Napster, Tidal, Qobuz, Deezer, Tuenln, iHeartRadio and more coming in the near future.
Local storage	Music stored on the mobile device memory, NAS, USB pen drive
Aux input	RCA input
Digital input	SPDIF Optical input
General
Power input	12V/1A input
Dimensions	114.7x107.5x37mm
Weight	0.4kg
Working temperature	0°C~40°C