The Matrix Audio mini-i Pro 4 Music Streamer Review begins with a deep dive into why this compact powerhouse stands out in a crowded streaming landscape. Boasting the latest ESS ES9039Q2M DAC chipset, balanced headphone amplification and a bespoke streaming OS, the mini-i Pro 4 masters the art of high-resolution audio and unlocks virtually any music source—local or online—for audiophiles seeking sonic excellence.
Cutting-Edge Digital-to-Analogue Conversion
At the heart of the mini-i Pro 4 lies the ESS ES9039Q2M D/A converter, renowned for its ultra-low distortion (<0.00008 % THD+N) and stunning 127 dB SNR. Meticulously tuned circuits and premium components elevate every micro-detail, whether you’re rediscovering vinyl rips at 24-bit/192 kHz or streaming MQA tracks via USB. The result is a soundstage with palpable depth, refined transparency and lifelike dynamics.
Comprehensive Streaming Ecosystem
Matrix Audio’s proprietary MA Player OS transforms the mini-i Pro 4 into a Roon Ready, DLNA/UPnP, AirPlay 2 and Spotify Connect endpoint. Integrated support for TIDAL Connect, Qobuz, HIGHRESAUDIO, NetEase Cloud and more ensures seamless access to high-resolution libraries. The MA Remote App (iOS and Android) makes browsing, metadata display and firmware updates effortless, right from your smartphone or tablet.
Versatile Connectivity & Headphone Amplification
This streamer isn’t just about digital inputs—its full balanced headphone amp features both 4.4 mm and 6.35 mm outputs, delivering up to 2.2 W at 33 Ω. High-impedance cans are driven with authority, free from noise and interference thanks to a symmetrical amplifier topology. Add HDMI ARC for TV audio, S/PDIF coaxial/optical for legacy sources, plus RCA analog input and USB Type-C (up to DSD512 and 768 kHz PCM), and you’ve got a true jack-of-all-trades.
Who Should Consider the mini-i Pro 4?
If you’re an audiophile craving an all-in-one hub—combining a top-tier DAC, versatile streamer and robust headphone amplifier—the mini-i Pro 4 could be your perfect match. Its 3.46-inch touch display and optional RM5 remote make operation intuitive for home systems, while gigabit Ethernet and dual-band Wi-Fi ensure rock-solid streaming.
Pros & Cons
Pros
State-of-the-art ES9039Q2M DAC with 127 dB SNR and <0.00008 % THD+N
Balanced headphone outputs (4.4 mm & 6.35 mm) with high-impedance drive
Roon Ready, AirPlay 2, Spotify Connect and more via MA Player
HDMI ARC, S/PDIF, RCA analog input plus USB audio (DSD512, MQA & 768 kHz)
Touchscreen, RM5 remote and MA Remote App for intuitive control
Compact aluminium chassis in Black or Grey to suit any interior
Cons
Premium feature set comes with a premium price tag
Touchscreen menu depth may require brief acclimatisation
Why the mini-i Pro 4 Earns Our Enthusiasm
The Matrix Audio mini-i Pro 4 Music Streamer seamlessly bridges the gap between analogue heritage and modern streaming convenience. Its audiophile-grade DAC, versatile I/O and refined amp stage deliver an immersive, high-fidelity experience that few competitors can match in this form factor. Whether you’re curating local file libraries, exploring MQA or indulging in lossless streaming, the mini-i Pro 4 ensures every note sings with clarity and emotion.
