NAD M33 BluOS Streaming Integrated Amplifier

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The NAD Masters Series M33 boasts an impressive array of features, positioning it as the perfect focal point for a two-channel HIFI system. Delivering a robust 200 watts per channel into an 8-ohm load or 380 watts per channel into 4 ohms, this amplifier provides ample clean power and broad speaker compatibility. Its versatility extends to a plethora of analog and digital inputs for wired connections, complemented by various wireless music streaming choices. Additionally, the M33 incorporates built-in room correction and the option for convenient voice control, enhancing its appeal for discerning audio enthusiasts.

If the convenience of wireless streaming is your preference, this amplifier has got you covered with Bluesound's proprietary BluOS operating system. This system provides effortless app-based access to popular online streaming services such as Spotify®, Qobuz, and more, in addition to your personal library of downloaded music, including high-resolution audio files. Expand your musical experience with seamless, lag-free multi-room wireless music by integrating Bluesound speakers and components in various rooms. Apple® AirPlay® 2 enables direct streaming from an iPhone® or iPad®, as well as ask Siri to play Apple Music.

The two-way Bluetooth feature adds an extra layer of versatility, allowing you to either play audio from apps on your mobile device through the M33 or transmit music from the amplifier to compatible wireless speakers or headphones.

  • 200 watts x 2 channels into 8 ohms (20-20,000 Hz) at 0.002% THD
  • 380 watts x 2 into 4 ohms
  • Frequency response: 20-60,000 Hz
  • 32-bit/384kHz ES9028Pro SABRE DAC built in
    • Supports high-res MQA, FLAC, WAV, and AIFF files
  • Color touchscreen display
  • Supports voice control with Amazon Alexa and Google Assistant devices
  • BluOS compatibility for further expansion with Bluesound wireless speakers
  • Built-in two-way Bluetooth® with aptX HD
    • Receiver mode for playing sources wirelessly
    • Headphone mode for listening on Bluetooth headphones
  • Connects to your home network via built-in dual-band Wi-Fi® or wired Ethernet for music streaming
    • includes support for Amazon Music Unlimited, Spotify®, TIDAL, Napster, Deezer, Qobuz and more (subscription required for some services)
    • free internet radio from TuneIn Radio and iHeartRadio
  • Apple® AirPlay® 2 lets you stream directly from an iPhone® or iPad® and ask Siri to play Apple Music
    • Free BluOS controller app for iOS®, Android™, Windows, and Mac OS X
  • Built-in Dirac Live room correction with included calibration microphone improves clarity and stereo imaging


  • Analog stereo RCA audio input
  • Phono stage input for turntables with moving magnet and moving coil cartridges
  • Balanced stereo XLR input
  • Digital inputs (all 24-bit/192 kHz)
    • 2 Toslink optical, 2 coaxial
    • HDMI ARC input (2-channel PCM only; does not support Dolby Digital or DTS)
    • USB (Type A) port for connecting a thumb drive or mass storage device
    • AES/EBU XLR input
  • Stereo RCA preamp output for connecting a separate amplifier
  • 2 mono RCA outputs for connecting powered subwoofers
  • Two sets of binding post speaker connectors
  • Mini Type-B USB port for service updates
  • IR input and 12-volt trigger in/out
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