Russound SMZ-8

Russound is launching the SMZ-8, the successor to the MCA-88 in its range of multiroom controllers. This audio hub combines high‑resolution streaming, class D amplification, and advanced DSP processing in a 19‑inch rack format. The SMZ-8 incorporates a streaming platform developed in‑house by Russound, providing access to popular music services via AirPlay, Google Cast, and Spotify Connect. The 8‑source/8‑zone architecture can be expanded up to 48 networked zones, with six amplified channels delivering 50 watts per channel and two line outputs for external amplification.

More powerful amplification than the previous generation

The MCA-88 delivered 40 watts per channel and was not stable at 4 ohms, limiting speaker options. The SMZ-8 delivers 50 watts per channel at 8 ohms and 100 watts at 4 ohms, thanks to separate class D amplifiers for each of the six amplified zones. This 4‑ohm stability allows you to connect two pairs of 8‑ohm speakers per amplified zone, effectively doubling installation possibilities. Zones 7 and 8 feature variable or fixed line‑level outputs, making it easy to add external amplifiers for outdoor areas or large rooms that require more power. Russound’s D‑series amplifiers (D890, D1290, D1675) are designed to pair naturally with these line outputs.

High‑resolution streaming and comprehensive connectivity

The built‑in streamer supports 192 kHz/24‑bit files, based on the same architecture as Russound’s MBX-PRE and MBX-AMP players. The unit handles both local files via USB‑C port (USB drive or external hard drive) and streams from Spotify, Deezer, Tidal, and other platforms. Physical connectivity includes 8 analog RCA inputs, 3 optical inputs, 2 coaxial inputs, one HDMI ARC input, and one USB‑C input. The eight analog inputs include signal sensing that automatically activates the corresponding zone when an audio signal is detected. Dual‑band Wi‑Fi 5 (802.11ac) complements Ethernet, although Russound recommends a wired connection for reliability. A built‑in 2‑port Ethernet switch saves a network port by allowing a second device to be daisy‑chained.

Zero‑latency audio‑video sync

The HDMI ARC input lets you connect a TV and distribute its audio to all zones without lip‑sync delay. This is particularly useful for broadcasting a sports event in several rooms at once. CEC commands allow you to control the SMZ-8 volume directly from the TV remote when the main zone is configured in the Web Config interface. Zone‑to‑zone synchronization is achieved with minimal latency simply by selecting the same source from multiple rooms, and works across up to 48 zones in an expanded configuration.

DSP processing and parametric equalization

The 7‑band parametric graphic equalizer includes presets optimized for Russound speakers, speeding up initial setup. The Russound app (iOS and Android) provides access to full parametric EQ, an extensive library of speaker presets, and a pink noise generator for calibrating each zone. These fine adjustments compensate for the specific acoustics of each room, from the living room to the kitchen and outdoor spaces. Settings are stored independently for each zone, allowing you to optimize sound according to the characteristics of the space and the installed speakers.

Modularity and expansion up to 48 zones

Up to six SMZ-8 units can be connected on the same network to create an 8‑source/48‑zone system. Each controller communicates seamlessly with the others, so you only need to extend the audio sources, not duplicate them. Each internal streamer has its own default source number based on the controller’s ID switch, solving a limitation of the MCA-88X which did not allow all streamers to be used in a multi‑unit installation. This network architecture offers flexible deployment across multiple floors or large properties, with each SMZ-8 positioned wherever cabling allows. Analog loop outputs also make it possible to share audio sources between multiple controllers.

Mobile app and in‑wall controllers

The Russound app centralizes management of all zones and sources. It displays track metadata, controls playback functions, adjusts EQ, and configures wake and sleep timers. The XTS7 (color touchscreen) and IPK-1 (simple IP keypad) in‑wall keypads provide dedicated control points in each room, so you don’t have to look for your phone to change volume or source. Standard features include party modes, alarm and sleep timers, do‑not‑disturb zone designation, linking of sources and zones, participation in all‑on/all‑off commands, and other customization options configurable on a per‑zone basis.

Installation by certified integrators

The SMZ-8 ships in a locked state and requires authentication with valid Russound Certified Installer credentials via the Web Config utility or mobile app. This ensures that only trained professionals configure the device, guaranteeing optimal installation and programming. The 19‑inch rack chassis fits easily into equipment racks or can be shelf‑mounted using the supplied brackets. Removable 4‑pin euroblock speaker connectors accept cables up to 12 AWG.

Long‑range Bluetooth extension

Bluetooth range can be extended up to 500 feet using the BTC-2X module or BSK-2 kit, allowing the Bluetooth receiver to be placed near the listening area rather than at the SMZ-8 in the equipment rack. This is particularly useful for remote outdoor spaces such as a pool or terrace. The SMZ-8 can manage multiple Bluetooth inputs simultaneously, a rare capability on the market. One user can stream music via Bluetooth in the kitchen while a guest does the same by the pool, each with their own stream and playback controls.

Technical specifications

Amplification and power

• Output power: 50 W per channel at 8 Ω
• 6 amplified stereo channels for zones 1 to 6
• Advanced amplification and power supply technology for superior sound quality and optimal efficiency

Zone architecture and configuration

• 8-source / 8-zone architecture
• Zones 1 to 6: amplified, 50 W at 8 Ω
• Zones 7 and 8: non-amplified, allowing the addition of an external amplifier
• Expandable up to 48 zones for complex installations
• Expansion possible via MBX modules to increase the number of streaming feeds

Audio inputs and connectivity

• 8 analog stereo sources
• 5 digital sources
  • 3 Toslink optical inputs
  • 2 coaxial inputs
• HDMI ARC input for audio synchronization with TV
  • Supports low-latency synchronization
• USB-C port for audio playback from USB devices or external hard drive
• Bluetooth connectivity via BTC-2X module sold separately

Network connectivity and streaming

• Built-in high-resolution audio player
• Network connectivity: wired / Wi-Fi 5 (802.11ac)
• Supported streaming protocols: AirPlay, Google Cast
• Compatible with major online music platforms

Audio processing and equalization

• Built-in 7-band parametric graphic equalizer
• Advanced digital signal processing
• Built-in presets optimized for Russound speakers
• Advanced features accessible via the Russound app
  • Full parametric equalization
  • Speaker preset library
  • In-depth customization of audio settings

Control and user interface

• Russound mobile app for iOS / Android
• Compatible with XTS7 and IPK-1 wall keypads
• Intuitive interface for centralized multi-zone management
• Full control of all zones from the app

Physical specifications

• Standard 19-inch rack format
• Product dimensions: 43.4 cm x 40.2 cm x 8.8 cm
• Product weight: 9.4 kg
• Shipping dimensions: 53 cm x 50 cm x 23.5 cm
• Shipping weight: 12.5 kg
• High-end, elegant, and minimalist design
• Can be rack-mounted or placed on a shelf
• Suitable for residential and commercial projects

Power supply

• Mains voltage: 100-120 V / 220-240 V ~ 50/60 Hz

Accessories and box contents

• Wi-Fi / Bluetooth antennas
• Rack-mount brackets with screws
• Removable, screw-on 4-pin speaker connectors
• User manual

Distribution and certification

• RCI program: activation reserved for Russound-certified installers
• Exclusive distribution via authorized dealer network