Fosi Audio S3 Balanced Hi-Fi Streamer with AKM DAC, Preamp Function, HDMI eARC, and Bluetooth
The Fosi Audio S3 is an incredibly versatile, high-performance digital front end that seamlessly merges the functions of an audiophile network music streamer, a high-resolution standalone DAC, and a fully balanced preamplifier. Designed to act as the modern hub for your two-channel or 2.1 home audio system, this compact device delivers breathtaking sonic transparency and a non-fatiguing, fluid presentation. Housed in a robust graphite grey chassis accented by a metallic orange volume control knob, it packs a massive feature set into a remarkably small footprint that easily integrates onto desktops, media consoles, or audio racks.
At its core, the S3 is engineered around an advanced audio architecture featuring an Amlogic streaming platform, an independent flagship AKM AK4493SEQ DAC chip, and premium OPA1612 operational amplifiers in a differential circuit layout. This balanced design ensures an ultra-low noise floor, near-zero channel imbalance, and stellar instrument separation. With dual-band Wi-Fi 6, an RJ45 Ethernet port, and Bluetooth 5.3 on board, the S3 offers robust wireless stability. It effortlessly pulls lossless audio from your network or online services, supporting AirPlay 2, Google Cast, Spotify Connect, and Tidal Connect for ultimate streaming flexibility.
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Features:
- Three-in-One Component Hub: Functions perfectly as a network audio streamer, an ultra-quiet standalone DAC, or a balanced system preamplifier to clean up your audio stack.
- Flagship AKM Conversion Stage: Powered by an independent AK4493SEQ DAC chip to deliver a neutral, highly detailed, and organic sound profile that resolves fine musical nuances.
- Fully Balanced XLR Output: Outfitted with a premium differential amplification circuit utilizing OPA1612 op-amps to prevent channel crosstalk and lower common-mode noise.
- High-Bandwidth HDMI eARC: Connects directly to your television to handle uncompressed, high-resolution audio return, easily upgrading your home theater to a high-fidelity 2.1 setup.
- Dedicated Active Subwoofer Output: Features an independent mono analogue sub out, making it straightforward to add deep low-frequency reinforcement to a pair of stereo bookshelf speakers.
- Next-Gen Wireless Streaming: Integrates dual-band Wi-Fi 6 and Bluetooth 5.3 with AAC/SBC codecs, ensuring stable, jitter-free music playback throughout your home network.
- Universal Protocol Compatibility: Supports Tidal Connect, Spotify Connect, Apple AirPlay 2, Google Cast, and DLNA/UPnP network servers for direct, cross-platform app control.
- Precision Digital Volume and EQ: Features a digital volume domain that eliminates analog channel mismatch, alongside an intuitive companion app featuring a built-in 5-band precision equalizer.
Specifications:
- Chipset & Audio Processing Core:
- Streaming Platform Processor: Amlogic A113X
- Digital-to-Analog Converter (DAC): Independent AKM AK4493SEQ
- Operational Amplifiers (Op-Amps): Dual Differential OPA1612
- Analog-to-Digital Converter (ADC): Burr-Brown PCM1894
- Network & Wireless Architecture:
- Wi-Fi Network Networking: 802.11 a/b/g/n/ac/ax Dual-Band Wi-Fi 6 (2.4GHz / 5GHz)
- Wired LAN Connection: 10/100M Ethernet RJ45 Port
- Bluetooth Specification: Version 5.3 (Profiles: A2DP, AVRCP, BTLE)
- Wireless Audio Codecs Supported: SBC, AAC
- Streaming Protocols: Tidal Connect, Spotify Connect, Google Cast, Apple AirPlay 2, DLNA, Roon Ready
- Input Paths & Maximum Sampling Rates:
- Wi-Fi & Wired Network Streaming: Up to 24-bit / 192kHz PCM
- HDMI eARC Digital Input: Up to 24-bit / 192kHz PCM
- Optical Toslink Digital Input: Up to 24-bit / 192kHz PCM
- Google Cast Playback: Up to 24-bit / 96kHz PCM
- Apple AirPlay 2 Path: 16-bit / 48kHz PCM
- Roon Ready Integration: Up to 32-bit / 384kHz PCM
- Bluetooth Wireless Input: Up to 24-bit / 48kHz PCM
- Audio Inputs & Outputs Array:
- Audio Inputs: 1 HDMI eARC, 1 Optical Toslink, 1 Stereo Analog RCA
- Audio Outputs: 1 Stereo Balanced XLR, 1 Stereo Unbalanced RCA, 1 Optical Toslink, 1 Dedicated Mono RCA Subwoofer Out
- System Integration Connections: 1 3.5mm 12V Trigger Out, 1 RJ45 Ethernet
- General Performance & Physical Parameters:
- Signal-to-Noise Ratio (SNR): >= 120dB
- Total Harmonic Distortion + Noise (THD+N): As low as 0.00018%
- Power Source Supply: DC 12V / 1.5A External Adapter
- Remote Controller: Included Bluetooth Remote (Over 15 Meter Operating Range)
- Chassis Dimensions (W x D x H): 6.81" x 6.81" x 1.85" (17.3 x 17.3 x 4.7 cm)
- Unit Net Weight: Approximately 1.92 lbs (0.87 kg)
- Enclosure Finish Color: Graphite Grey with Anodized Metallic Orange Volume Dial
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Key Features
Gaming Products
Set the stage for the perfect gaming environment
Amps / DACs
Ensure your music feels
dynamic.