Audioflow 3S-4Z 4-Way Smart Speaker Switch - Wireless Control System

Audioflow 3S-4Z Smart Speaker Switch

The Audioflow 3S-4Z 4-Way Smart Speaker Switch is designed for multi-room audio systems, allowing you to connect up to four pairs of speakers—such as ceiling, on-wall, in-wall, bookshelf, or outdoor speakers—to a single stereo amplifier. It's perfect for zoning areas like a bedroom, dressing room, bathroom, and balcony, or living room, dining room, kitchen, and garden. With smart control via Wi-Fi, the Audioflow app, Amazon Alexa, or integration with systems like Control4 and ELAN, it complements streaming ecosystems like Sonos and Bluesound by adding wireless control to your wired speakers.

Control Options

Control your audio zones effortlessly with the Audioflow app (iOS/Android), which lets you switch between speakers from anywhere in your home. Amazon Alexa integration adds voice commands, so you can say “Alexa, play music in the garden” without lifting a finger. For smart home enthusiasts, the 3S-4Z integrates with Control4, ELAN, RTI, and more, making it a seamless part of your automated setup. If you prefer manual control, use the front panel buttons or wire up physical switches via contact closure.

Speaker Connections and Impedance

The 3S-4Z supports four pairs of speakers with a series-parallel configuration: Zones A and B are in series, Zones C and D are in series, and these two sets are in parallel. With 8Ω speakers, the impedance drops to 4Ω when all zones are active, so ensure your amplifier can handle 4Ω. For simpler setups, the app’s one-at-a-time mode locks the switch to a single zone, eliminating impedance concerns and focusing sound where you need it.

Audio Performance and Protection

Rated for amplifiers up to 300W at 8Ω, the 3S-4Z handles powerful audio systems. A 200Ω dummy load protects your amp when all zones are off, preventing open-circuit damage.

Design and Expandability

Its compact design (H38 x W216 x D100 mm, 300g) fits easily into AV racks or shelves, and it’s made in the UK for lasting quality. Expand your system by adding more 3S-4Z units to your Wi-Fi network, all controlled from the same app.

The Audioflow 3S-4Z brings smart, flexible control to your multi-room audio setup. Manage four zones with one amp via app, voice, or smart systems—perfect for modern, cost-effective audio zoning.

Technical Specifications

• Model Number: 3S-4Z
• UPC / EAN-13: 5060739700027
• Product Dimensions: H38 x W216 x D100 mm
• Weight: 300g
• Power Input: 5V DC 1A, 2.1 x 5.5mm Barrel Plug, Centre Positive
• Power Supply: 100-240V 50/60Hz, 1.8m Lead, UK/EU/USA/AUS Plugs
• Switching Relays: Max 8A @ 250V AC
• Amplifier Power: Max 300W @ 8Ω
• Cable Connection: Max 2.5mm² or 14AWG
• Speaker System Design: Impedance Matching, (A+B Series) in Parallel with (C+D Series)
• All Zones Off: Amplifier Protection 200Ω Dummy Load
• Wi-Fi Support: 2.4GHz 802.11b/g/n, WPA/WPA2 PSK
• Supported OS (Provisioning): Android 6.0+ (Google Play Store) / Apple iOS 13.0+ (App Store)

Included in the Box

• Audioflow 3S-4Z 4-Way Smart Speaker Switch
• Power Supply (100-240V with UK/EU/USA/AUS plugs)
• Connection Plugs
• Cable Ties
• Quick Start Guide

FAQ

• What speakers can I use? Use 8Ω speakers and ensure your amplifier can handle down to 4Ω when all zones are active.
• Can I use it without Wi-Fi? Yes, via contact closure for manual control or the front panel buttons.
• Does it work with my smart home system? Yes, it integrates with Control4, ELAN, RTI, and more.
• Can I add more zones? Yes, add another 3S-4Z and control it from the same app.
• How do I set up the app? Download the Audioflow app (Android 6.0+ or iOS 13.0+), connect to Wi-Fi, and follow the in-app instructions.