A30+ WiFi mini stereo amplifier perfectly suited for your passive desktop stereo system and smaller space. The compact stereo amplifier and easy to use design makes it easy for everyone to get started quickly. Play online music service, online radio, local music files to your passive speakers by WiFi, AirPlay, Spotify Connect, anytime in every rooms. Mini Stereo Amplifier Small But Complete In Every Detail A30+ mini stereo amplifier packs 30 watts per channel which is perfect to your desktop stereo system. Enjoy the full functionality with wireless streaming: WiFi, AirPlay, Spotify Connect, Qplay, DLNA, UPnP, Bluetooth 5.0 and full features of our 4STREAM App: Online music, Online Radio, EQ Settings, alarm clock and more. So does includes the ACPWokbench tuning tool features. The compact stereo amplifier and sliver surface makes your desktop looks more clear and premium. amplifier for desktop Amplifier For Desktop Best For Your First WiFi Stereo Amplifier Our wireless streaming system is designed to be very simple, even for people who are not familiar with the electronics can quickly get started. There is clear step by step instructions in the app. After the first setup of A30+ small stereo amplifier, you can stream directly from iPhone, iPad or Mac by Airplay or stream directly from Spotify both without app. The whole family can easily get started. mini stereo amplifier Play High Quality Audio Without The Hassle Streaming by WiFi has stronger range signal and high quality audio transmission. With A30+ mini speaker amp, you can stream anytime, anywhere with far distance from the device. Upgrade your listening experience far from Bluetooth streaming before. multiroom audio system Hook Up Whole House Audio A30+ mini audio amplifier can play a different song in different rooms, or the same track in every room, or play some rocky music for whole house party! Bring Hi-end music to every rooms and controlled by one single device. Music service Versatile Playing Play from Amazon Music, Spotify, TIDAL, Qobuz, iHeartRadio, TuneIn, Napster, phone storage, NAS, USB stick,line in source, bluetooth source and more. Newest Firmware Version 4.6.415145.35 Connectivity WiFi: IEEE802.11 b/g/n 2.4G Bluetooth: 5.0 SBC/AAC, 15M, BT Receiver Wired Network: Ethernet Single 10/100M RJ45 Power Input 12V-18V/DC in Audio Input Analog: AUX (1Vrms) Digital: Micro USB Input Audio Output Analog: AUX (1Vrms) Speaker Out Amplifier Chip TPA3116 Speaker Power 2 x 35W @ 4Ω load at 18V 2 x 18W @ 8Ω load at 18V Speaker Impedance 4-8Ω USB Host For USB pen drive/stick, 1000 songs limited Frequency Response 20Hz to 20kHz THD + N <0.03% @ 1kHz/1W/4Ω Music Format FLAC/MP3/AAC/AAC+/ALAC/APE/WAV Audio Format Decoding up to 192kHz/24bits Output up to 44.1kHz/16bits CD quality Protocols AirPlay, DLNA, UPnP, Spotify Connect, Qplay NAS Support NAS with DLNA support General Dimensions: 131.8mm*85.5mm*27mm (5.18in*3.37in*1.06in) Weight: 500g Working temperature: 0~40℃