A50+ is a stereo amplifier that can power your passive speakers, stream sounds from nearly unlimited sources via WiFi, Airplay, or Bluetooth 5.0 to any rooms for multiroom listening.

Powerful Streaming Amplifier Fits Your Rooms

A50+ streaming amplifier packs 50 watts per channel which is a great enough to power your home passive speakers. Stream undistorted, clear sound more stable via WiFi, Airplay and Spotify Connect, DLNA, UPnP, Qplay to every rooms. Or switch to Bluetooth 5.0 streaming anytime for flexible resources playing.

Connect Any Sounds In One System

Stream from your favorite: online music service, online radio, NAS, USB stick, phone storage. Or TV audio from optical in, CD player from RCA in and third-party software with DLNA, UPnP protocols supported.

FEATURES

• Seamless Music Streaming – Supports Spotify, Amazon Music, Apple Music via AirPlay, Tidal, and more for uninterrupted listening.

• Multiroom Audio Support – Enjoy synchronized playback across multiple rooms with WiFi, Bluetooth 5.0, NAS, USB disk, Micro USB DAC, and Optical input options.

• High-Performance Stereo Amplifier – 2.0 channel class-D audio amplifier designed for immersive home speaker systems.

• Powerful 2x50W Output – Delivers ultra-clear HD audio quality, perfect for bookshelf speakers and ceiling speakers.

• Lossless & Gapless Playback – Experience pristine sound with support for FLAC, MP3, AAC, AAC+, ALAC, APE, WAV formats, ensuring high-fidelity audio.

  
  

SPECIFICATIONS

• WiFi: IEEE 802.11 b/g/n 2.4G

• Bluetooth: 5.0 SBC/AAC (Range: 10m)

• Wired Connection: Ethernet RJ45

• Supported Protocols: AirPlay, DLNA, UPnP, Spotify Connect, Qplay

• Music Format Compatibility: FLAC, MP3, AAC, AAC+, ALAC, APE, WAV

• Audio Decode: Up to 24-bit/192kHz

• Audio Output: 44.1kHz/16-bit, CD quality

• Frequency Response: 20Hz – 20kHz

• THD+N: 0.03% @1kHz, 50W+50W 24V-4Ω

• Speaker Impedance: 4Ω – 8Ω

• Speaker Power:

  • 2×50W into a 4Ω BTL Load at 24V

  • 2×30W into an 8Ω BTL Load at 24V

• Amplifier Chip: TPA3116

• DC Input: 12V – 24V

• Analog Input: RCA x1 / 2Vrms

• Analog Output: Sub Out x1 / 2Vrms, Speaker Out

• Digital Input: Micro USB x1, Optical Input

• USB Host: Supports USB pen drive/stick (up to 1000 songs)

• Local Storage: Mobile device memory, NAS, USB pen drive/stick

• PC Compatibility: iTunes, Musicbee, Foobar 2000

• Remote Control: Available

• App Support: Free iOS & Android app (4Stream)

• Weight: 1.5kg

• Dimensions: 120 x 113 x 37mm

• Working Temperature: 0℃ – 40℃

• Antennas: WiFi/Bluetooth signal

• Device On:

  • Short press once: Switch input mode

  • Long press once: Power off

  • Short press twice: Disconnect WiFi/Bluetooth & enter pairing mode

  • Short press three times: Restore factory settings

• Device Off:

  • Short press: Power on

• White: WiFi & network mode (Flashing fast: Booting, Flashing slow: Waiting for WiFi, Solid: Connected)

• Blue: Bluetooth mode (Flashing slow: Waiting, Solid: Connected)

• Green: Line-in mode

• Red: USB mode

• Yellow: PC connection

• Purple: Optical-in mode