Fosi Audio S3 Balanced HiFi Streamer
Features
- Balanced Circuit with Premium Components
- Intelligent Control & Home Theater Ready
- WiFi 6 & Bluetooth 5.3
Pairs well with
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Fosi Audio S3 Balanced HiFi Streamer
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
Mon-Fri: 3:00 AM - 3:00 PM PST -
FAQ’s
If you have any questions, please refer here: FAQs
Multiple Options for Enjoying Music
Capable of up to PCM 32bit/384kHz lossless audio, it delivers wired-grade sound quality with the convenience of wireless control.
Note: Roon Ready certification is in progress and not yet supported. You can still use Roon via AirPlay 2 or Google Cast.
Product details
Description
All in One HiFi Streamer: The S3 combines digital transport, DAC & preamp in one chassis. The flagship AK4493SEQ DAC supports PCM up to 32bit/384kHz with THD+ N ≤0.00018% and SNR ≥120dB—delivering reference-grade sound for serious home audio systems
WiFi 6 & Bluetooth 5.3: Dual-band (2.4/5GHz) Wi-Fi and Bluetooth ensure wider coverage and faster wireless connections. Supports AirPlay 2, Spotify Connect, TIDAL Connect, Google Cast, and DLNA. Stream music from NAS or online services with ease
Balanced Circuit with Premium Components: Isolated analog/digital architecture, Japan ELNA capacitors, ultra-low-noise LDO power supply. Dual op-amp differential amplification with XLR balanced outputs, engineered for greater separation and a wider soundstage
Intelligent Control & Home Theater Ready: Easy setup with the Fosi Audio App to control playback and fine-tune the sound via EQ. With HDMI eARC and a dedicated SUB OUT, you can connect to your TV and active subwoofer to build an immersive 2.1 home theater
Reliable Streaming Amplifier with Smart Protection: 12V trigger sync, overcurrent/overvoltage safeguards, bottom heat dissipation. Compact 6.81" design—integrated amp companion with audiophile performance
Specifications
Chipset
Amlogic A113X + AKM 4493SEQ + OPA1612
Network
802.11 a/b/g/n/ac/ax dual-band Wi-Fi (2.4 GHz and 5 GHz) 10/100M Ethernet port
Bluetooth
Bluetooth 5.3, A2DP, AVRCP, BTLE; supports SBC and AAC codecs
Remote Control
Bluetooth connectivity with a range of over 15 meters
Power
DC 12V 1.5A
Input Sampling Rate
OPT: PCM 24bit / 192kHz
BT: PCM 24bit / 48kHz
Google Cast: PCM 24bit / 96kHz
Airplay 2: PCM 16bit / 48kHz
HDMI: PCM 24bit / 192kHz
Roon Ready: PCM 32bit / 384kHz
Wi-Fi: PCM 24bit / 192kHz
Streaming Protocols
Google Cast, AirPlay 2, DLNA, Roon Ready, Spotify Connect, Tidal Connect
APP
Fosi Audio APP Download on Google Play and the App Store
Dimensions
17.3 × 17.3 × 4.7 cm (6.81 × 6.81 × 1.85 in)
What‘s in the box？
- Fosi Audio S3
- Bluetooth Remote Control
- Quick Guide
- DC Power Adapter
- Optical Cable
FAQs
Please read our FAQs page to find out more.
What versions of AirPlay does the S3 support?
The S3 supports AirPlay 1 and 2.
What devices does the Fosi Audio App support, and where can I download it?
The Fosi Audio App is only available for iPhone/iPad and Android phones or tablets. You can search for "Fosi Audio" on the App Store or Google Play to download and install it.
The Fosi Audio App includes some feature options such as mute control and clock settings, but they don't work on the S3. What's the reason?
Some feature options in the App are reserved for future versions and are temporarily unavailable. The software is currently being continuously optimized, and we will gradually complete and unlock these features in future updates.
Does the S3 support Roon streaming playback?
Roon Ready certification is currently in progress and is not yet supported. Other functions work normally, and you can connect to Roon via AirPlay 2 or Google Cast.
Can I connect a turntable directly to the S3 streamer?
No, turntables without a built-in phono preamp must be connected to an external phono preamp first before connecting to the S3 streamer.