Bring flexible, high-quality network music streaming to commercial audio installations with the Bluesound Professional B400S - a rack-mountable, four-zone network music player designed for businesses, hospitality environments, retail spaces, restaurants, and other multi-zone audio applications.
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B400S 4-Zone BluOS Network Music Player

The Bluesound Professional B400S is a 4-zone network music player designed specifically for use in commercial installations. This 1U player is based on the established BluOS platform and is capable of playing and distributing content from local storage as well as from a large number of streaming services, including some specifically designed for commercial use, such as SoundMachine, Custom Channels, QSIC, SiriusXM Music for Business and Tunify.. These sources can be played to one or more of the four available stereo zones with the B400S effectively acting as four independent players with the capability of completely separate content and control, or grouping into user-definable groups of whatever size required with different zones within the BS400S and/or any other connected Bluesound Professional players on the network.

What It's Good At:

• Independent music playback across four stereo zones, allowing different areas to play separate content or synchronize playback as needed
• Commercial-grade network music streaming through the BluOS platform, with support for local network storage and compatible music streaming services
• High-resolution audio playback supporting sample rates up to 192kHz and bit depths up to 24-bit
• Flexible system integration with four balanced analog zone outputs, four optical digital outputs, and four coaxial digital outputs
• Reliable wired network connectivity through Gigabit Ethernet for professional audio installations
• Advanced control and automation integration with supported systems, including Control4, Crestron, RTI, URC, ELAN, and Lutron
• DSP-based audio processing for equalization and system tuning
• Rack-friendly installation with a compact 1U chassis designed for professional equipment racks

Specifications:

• Supported Operating Systems: Plays music from network shares on the following desktop operating systems: Microsoft Windows XP, 2000, Vista 7-10, Apple Macintosh 7-10
• Free Internet Radio: TuneIn Radio, iHeartRadio, Calm Radio, Radio Paradise, Slacker Radio
• Supported Cloud Services: SoundMachine, Tunify, Custom Channels, SiriusXM for Business, Spotify, Tidal, Amazon, Deezer, Qobuz, TuneIn, Radio.com and many others
• Integration Partners: Control4, RTI, Crestron, URC, ELAN, Lutron
• Album Art: JPG

AUDIO

• Rated Distortion: ≤0.005%
• Signal-to-Noise Ratio: 110dB
• Sample Rate: 32 – 192kHz]
• Bit Depth: 16 – 24

CONNECTIVITY

• Analogue: Balanced Phoenix
• SPDIF: Optical (TOSLINK)
• USB:
  • Type A (for USB memory stick and supported peripherals – FAT 32 formatted)
  • Type B (for computer audio interface)
• +12V Trigger IN: Phoenix 12V ±20%
• IR Input: Phoenix
• System Interrupt: Phoenix- Pin 1, 12V, Pin 2 Input 1, Pin 3 Input 2, Pin 4 GND

Output

• Analogue: Phoenix X4
• SPDIF: Optical x 4 (TOSLINK)
• Coaxial x 4: Coaxial x 4
• +12V Trigger OUT: 12V ±20%

Network

• Gigabit Ethernet RJ45

General

• AC Power Supply: AC Power Supply
• Standby Power: 6 W Idle (Network Standby Mode)
• Dimensions (W x H x D): 480 x 46 x 234mm (18 7/8 x 1 13/16 x 9 1/4”)*
• Net Weight: 2.7kg (5.9lb)
• Shipping Weight: 3.8kg (8.4lb)

Q&A:

How many audio zones does the B400S support?

A: The B400S supports four independent stereo zones. Each zone can play separate content, or multiple zones can be grouped for synchronized playback.

What is the Bluesound Professional B400S designed for?

A: It is designed for commercial multi-zone audio installations, including businesses, hospitality venues, restaurants, retail spaces, and other environments that require flexible music distribution.

Does the B400S support high-resolution audio?

A: Yes. It supports audio resolutions up to 24-bit/192kHz, depending on the source material and playback configuration.

Which streaming services can I use?

A: Supported services include SoundMachine, Tunify, Custom Channels, SiriusXM for Business, Spotify, TIDAL, Amazon Music, Deezer, Qobuz, and TuneIn. Availability depends on the service, subscription, region, and current platform support.

Can I integrate the B400S with a home or commercial automation system?

A: Yes. It supports integration with compatible third-party control platforms, including Control4, Crestron, RTI, URC, ELAN, and Lutron.

What audio connections are available?

A: The B400S provides a balanced analog input, an optical digital input, four balanced analog outputs, four optical digital outputs, and four coaxial digital outputs. It also includes USB connectivity, Ethernet, trigger connections, and an IR input.

Does the B400S connect to a network wirelessly?

A: The published specifications identify Gigabit Ethernet RJ45 as its network connection. Plan for a wired Ethernet connection rather than assuming built-in Wi-Fi connectivity.

Can I play music from a local storage device?

A: Yes. The B400S supports playback from network shares and compatible USB storage devices. USB Type A supports FAT32-formatted storage and compatible peripherals.

Does the B400S include a built-in power amplifier?

A: The B400S is a network music player, not a power amplifier. Its outputs are intended to connect to compatible downstream amplification or audio equipment.

How much rack space does it require?

A: The B400S occupies 1U of rack space and measures approximately 18 7/8 × 1 13/16 × 9 1/4 inches (W × H × D).