mini-i Pro 4 vs SMSL SU-X
The SU-X's bit depth is 32-bit against the mini-i Pro 4's 24-bit and its signal-to-noise 128 dB against 121 dB. Both share max sample rate (768 kHz) and thd (0.000%).
AI-generated product photo — not official manufacturer imagery.
DigitalStreamersDACsHeadphone Amplifiers
Estimated price (community-sourced)
$959
Around — community and catalog average, updates slowly
About the mini-i Pro 4
Matrix Audio mini-i Pro 4 is a compact high-fidelity all-in-one component that combines network streaming, DAC, preamp, and headphone amplification in a desktop chassis. It uses an ESS ES9039Q2M DAC, supports high-resolution playback over USB and network streaming, includes a 3.46-inch touchscreen, and provides both 6.35 mm single-ended and 4.4 mm balanced headphone outputs. It also adds HDMI ARC, S/PDIF optical/coaxial inputs, RCA analog input, and balanced XLR/RCA line outputs, making it suitable for headphones, active speakers, and integrated hi-fi systems.
Specifications
Digital Audio
DAC capabilities and digital audio processing
- Bit Depth
- 24-bit
- Max Sample Rate
- 768 kHz
- DSD Support
- DSD512
- MQA Support
- Yes
- DAC Chip
- ESS ES9039Q2M
Analog Output
Analog signal output specifications
- THD
- 0.000%
- SNR
- 121 dB
- Output Voltage
- 2.2V RMS
- Max Output Voltage
- 4.4V RMS
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- Yes
- Ethernet
- Yes
- Digital Inputs
- USB audio, HDMI ARC, coaxial S/PDIF, optical S/PDIF
- Analog Inputs
- RCA
- Analog Outputs
- XLR, RCA
Streaming Services
Supported streaming platforms and protocols
- AirPlay
- v2
- Chromecast
- No
- Roon Ready
- Yes
- Spotify Connect
- Yes
- TIDAL Connect
- Yes
- Other Services
- vTuner, Radio Paradise, HIGHRESAUDIO, QPlay
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 224 × 53 × 186 mm (W × H × D)
- Weight
- 1.3 kg (3 lbs)
- Available Colors
- silver, black
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions