- 1 x Fosi Audio S3 Balanced HiFi Streamer/DAC/Preamp
- 1 x Bluetooth Remote Control
- 1 x DC Power Adapter
- 1 x Optical Cable
- 1 x Quick Start Guide
Trusted & Verified
Fosi Audio S3 Balanced HiFi Streamer/DAC/Preamp with PCM Playback Support and Subwoofer Output
- PCM Playback Support up to 32 Bit and 384 kHz
- Balanced XLR and unbalanced RCA Analog Outputs
- Dual band Wi-Fi 6 and Bluetooth 5.3 connectivity
- High-Definition Multimedia Interface compatible eARC
- Dedicated Subwoofer Output for a 2.1 System
- Fosi Audio App Control with a 5-Band Equalizer
- Optical, High-Definition eARC, Network, and Wireless Inputs
- Multiroom Playback through AirPlay 2 and Google Cast
- AirPlay 2, Google Cast, Spotify Connect, TIDAL Connect, and DLNA support
Bring network streaming, digital conversion, source selection, and volume control together with the Fosi Audio S3 Balanced HiFi Streamer. Its compact silver chassis combines a digital transport, AKM based DAC, and preamplifier for use with power amplifiers, active speakers, televisions, and compatible home audio equipment.
High Resolution Digital Playback
The S3 uses an Amlogic A113X streaming platform, an AKM AK4493SEQ DAC, and OPA1612 operational amplifiers in a balanced circuit design. It supports PCM playback up to 32 bit and 384 kHz through supported sources. Fosi Audio specifies total harmonic distortion plus noise as low as 0.00018 percent and a signal to noise ratio up to 120 dB.
Wireless and Network Streaming
Dual band Wi-Fi 6 operates across 2.4 GHz and 5 GHz networks, while Bluetooth 5.3 supports SBC and AAC audio. Stream through AirPlay 2, Google Cast, Spotify Connect, TIDAL Connect, and DLNA, or play music stored on compatible network storage. AirPlay 2 and Google Cast also support synchronized multi-room playback.
Home Audio and Television Integration
Balanced XLR and unbalanced RCA outputs connect the S3 to compatible amplifiers or active speakers. The High-Definition Multimedia Interface compatible eARC receives audio from a compatible television, while the dedicated subwoofer output supports a 2.1 system. The Fosi Audio app provides playback control, input and output selection, and a 5 band equalizer for sound adjustment.
A 10 and 100 Mbps Ethernet port provides wired network access, and a 12 volt trigger supports synchronized operation with compatible equipment. The S3 can also receive Roon playback through AirPlay 2 or Google Cast while official Roon Ready certification remains in progress.
General
| Brand | Fosi Audio |
| Model | S3 |
| Product Type | Network Streamer, DAC, and Preamplifier |
| Color | Silver |
| Configuration | Standard Edition |
| Dimensions | 17.3 x 17.3 x 4.7 cm (6.81 x 6.81 x 1.85 inches) |
Audio Platform
| Streaming Platform | Amlogic A113X |
| DAC | AKM AK4493SEQ |
| Operational Amplifiers | OPA1612 |
| Circuit Design | Balanced |
| Maximum Supported PCM Resolution | 32 Bit and 384 kHz |
| Total Harmonic Distortion Plus Noise | As Low As 0.00018 Percent |
| Signal to Noise Ratio | Up to 120 dB |
Wireless Connectivity
| Wi-Fi Standard | 802.11 a, b, g, n, ac, and ax |
| Wi-Fi Bands | 2.4 GHz and 5 GHz |
| Bluetooth Version | 5.3 |
| Bluetooth Profiles | A2DP, AVRCP, and BTLE |
| Bluetooth Codecs | SBC and AAC |
| Bluetooth Range | More Than 15 Meters |
Network Connectivity
| Ethernet | 10 and 100 Mbps |
| Network Storage Playback | Supported |
| Multiroom Playback | AirPlay 2 and Google Cast |
Streaming Services and Protocols
| AirPlay 2 | Supported |
| Google Cast | Supported |
| Spotify Connect | Supported |
| TIDAL Connect | Supported |
| DLNA | Supported |
| Roon Ready | Certification in Progress |
| Current Roon Access | AirPlay 2 or Google Cast |
Input Sampling Rates
| Optical Input | PCM up to 24 Bit and 192 kHz |
| Bluetooth Input | PCM up to 24 Bit and 48 kHz |
| Google Cast | PCM up to 24 Bit and 96 kHz |
| AirPlay 2 | PCM up to 16 Bit and 48 kHz |
| High-Definition Multimedia Interface eARC | PCM up to 24 Bit and 192 kHz |
| Supported Network Playback | PCM up to 32 Bit and 384 kHz |
Inputs
| Optical Digital Input | Yes |
| HDMI eARC Input | Yes |
| Ethernet Input | Yes |
| Wi-Fi Input | Yes |
| Bluetooth Input | Yes |
Outputs
| Balanced Analog Output | XLR |
| Unbalanced Analog Output | RCA |
| Subwoofer Output | Yes |
| Digital Output | Needs Review |
Controls
| Front Volume Control | Yes |
| Power and Input Control | Yes |
| Bluetooth Pairing and Output Control | Yes |
| Status Indicators | Yes |
| Remote Control | Bluetooth |
| Mobile App | Fosi Audio App |
| Equalizer | 5-Band |
System Integration
| Trigger Connection | 12 Volt |
| Active Subwoofer Support | Yes |
| Two Point One System Support | Yes |
| Turntable Connection | External Phono Preamplifier Required Unless the Turntable Has One Built In |
Power
| Power Requirement | DC 12 V and 1.5 A |
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Tab: Frequently Asked Questions
How do I return an item?
How do I return an item?
Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
Will I receive a full refund when I return an item?
Will I receive a full refund when I return an item?
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.
How many days do I have to make a return?
How many days do I have to make a return?
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days.
My item was damaged in transit. How do I place a return?
My item was damaged in transit. How do I place a return?
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage.
There’s an issue with my order, what should I do?
There’s an issue with my order, what should I do?
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.
Can I exchange an item?
Can I exchange an item?
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.
If I ordered a kit, do I have to return all the items?
If I ordered a kit, do I have to return all the items?
If you ordered a kit, you must return all components and accessories to receive a full refund.
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.
Do you offer repairs?
Do you offer repairs?
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.
What is your return policy?
What is your return policy?
Most items can be returned within 30 days for a full refund. Click here to read our full return policy.
