Audioflow 4 Way Smart Speaker Selector Switch with App Control
Description
Description
The Audioflow 4 Way Smart Speaker Switch lets you connect and control up to four pairs of passive speakers from a single stereo amplifier.
It is ideal for creating four listening zones, such as a living room, dining room, kitchen and garden, without requiring a separate amplifier for each area.
Each speaker zone can be switched independently, or multiple zones can play together. Control is available from the touch-sensitive buttons on the front, through the Audioflow app over Wi-Fi, using compatible Amazon Alexa voice commands or through contact closure connections.
One Amplifier, Four Speaker Zones
Connect the speaker output from your amplifier to the Audioflow, then connect one pair of passive speakers to each of its four zones.
Every active zone receives the same audio source and shares the amplifier’s volume level, while the Audioflow lets you choose which areas are playing.
This makes it a practical solution for ceiling speakers, wall-mounted speakers, bookshelf speakers and passive outdoor speakers installed across several adjoining rooms or areas.
- Control Four Speaker Zones: Connect up to four pairs of passive speakers to a single stereo amplifier and switch each zone independently.
- Flexible Playback: Listen through one zone or select multiple zones to play at the same time.
- Audioflow App Control: Select your speaker zones remotely using the Audioflow app for compatible iOS and Android devices.
- Amazon Alexa Compatibility: Use compatible Alexa voice commands to switch individual speaker zones.
- Front Touch Controls: Operate each zone directly using the touch-sensitive controls on the front of the unit.
- Contact Closure Control: Integrate the switch with compatible third-party control systems using its contact closure connections.
- Impedance-Matching Design: The series/parallel switching arrangement helps protect the connected amplifier when multiple speaker zones are playing.
- Amplifier Protection: A 200Ω dummy load protects compatible amplifiers when every speaker zone is switched off.
- Made in the UK: Designed, manufactured and production-tested in the United Kingdom.
Important Compatibility Information
The Audioflow is a speaker selector, not an amplifier. It must be connected to the speaker output of a suitable stereo amplifier and can only be used with passive speakers. It does not power speakers by itself and is not intended for active or powered speakers.
All four zones play the same audio and use the same amplifier volume setting. The Audioflow switches each zone on or off but does not provide separate audio sources or independent volume control for each area.
The four-zone model uses an impedance-matching series/parallel arrangement. Zones A and B form one series pair, while Zones C and D form a second series pair, with the two groups connected in parallel when required. This helps prevent the combined speaker load from falling below a safe level for the amplifier. Available amplifier power is shared between active zones, so the relative output may vary depending on the selected zones and connected speaker impedances.
The smart-control features require a 2.4GHz Wi-Fi network. Please check your amplifier, speaker impedance and proposed wiring before ordering. If you are unsure whether the Audioflow is suitable for your system, contact our team and we will be happy to confirm compatibility.
Specifications
Specifications
- Model: Audioflow 3S-4Z
- Speaker Zones: Up to four pairs of passive speakers
- Amplifier Inputs: One stereo amplifier
- Zone Selection: Individual or multiple-zone playback
- Volume Control: No, volume is controlled by the connected amplifier
- Speaker System Design: Impedance matching, with Zones A and B in series and Zones C and D in series, with both groups connected in parallel
- Maximum Amplifier Power: 300W at 8Ω
- Switching Relays: Maximum 8A at 250V AC
- Maximum Speaker Cable Size: 2.5mm² or 14AWG
- All Zones Off Protection: 200Ω dummy load
- Wi-Fi: 2.4GHz 802.11b/g/n with WPA/WPA2 PSK
- Control Options: Front touch controls, Audioflow app, Amazon Alexa and contact closure
- Power Input: 5V DC, 1A, 2.1 × 5.5mm centre-positive barrel connection
- Power Supply: 100–240V, 50/60Hz with 1.8m lead
- Product Dimensions (H × W × D): 38 × 216 × 100mm
- Product Weight: 300g
- Boxed Dimensions (H × W × D): 90 × 355 × 127mm
- Boxed Weight: 721g
- Warranty: 1 year
What You Get
What You Get
- 1 × Audioflow 3S-4Z four-way smart speaker switch
- 1 × Power supply
- Speaker cable connection plugs
- Cable ties
- Quick-start guide
Payment & Security
Payment Methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
1 Year Warranty + 60 Day Returns
K&B Audio are authorised retailers for Audioflow. Your purchase comes with a 1 Year warranty, expert help on hand and you get 60 day returns window in case you're not 100% happy with the product.
Frequently Asked Questions
Do you price match?
Do you price match?
Yes, we will try our best to price match for you - but as a small independent company, we can't always guarantee it.
Please submit a price match request here.
We will price match where possible provided that the competitor is a like for like UK VAT registered company, they must be an authorised retailer, the product must be in stock and not on clearance.
More From Audioflow



![[OPEN BOX] Audioflow 3 Way Smart Speaker Selector Switch with App Control - K&B Audio](http://www.kbaudio.co.uk/cdn/shop/files/audioflow-3-way-smart-speaker-selector-switch-with-app-control-accessories-audioflow-601617.jpg?v=1769457396&width=1214)



