Matrix Audio mini-i Pro 4 Music Streamer/Headphone Amplifier

Matrix Audio mini‑i Pro 4

The Matrix Audio mini-i Pro 4 is an ultra-versatile all-in-one network streamer, DAC and headphone amplifier, offering high-performance sound and flexible connectivity in a compact format.

The mini-i Pro 4 integrates a latest-generation ESS ES9039Q2M dac chip with a refined audio circuit and delivers excellent dynamic performance, very low distortion and high SNR for detailed playback across genres. 

With both 6.35 mm single-ended and 4.4 mm balanced headphone outputs built in, the mini-i Pro 4 accommodates headphone users, while its balanced XLR and RCA line outputs allow seamless integration into a stereo system. 

On the streaming and source side, the mini-i Pro 4 supports Ethernet and dual-band WiFi, Roon Ready, TIDAL-Connect, Spotify Connect, AirPlay 2 and DLNA/UPnP. It also provides analog input, HDMI ARC input for TV integration and USB mass-storage/NAS playback. 

For assistance or product questions, call 443-402-5055 or text 443-402-5064 to reach our team. All Elite Audio is an authorized Maryland dealer with a full home audio showroom.

Key Specifications

• D/A Chip: ESS ES9039Q2M 
  
• Headphone outputs: 6.35 mm single-ended & 4.4 mm balanced 
  
• Line outputs: Balanced XLR (4.4 Vrms) & Unbalanced RCA (2.2 Vrms) 
  
• Sampling/format support (USB): PCM up to 32-bit/768 kHz; DSD up to 22.4 MHz native; MQA support 
  
• Network: Gigabit Ethernet + WiFi (2.4/5 GHz) 
  
• HDMI ARC input: up to 24-bit/192 kHz 
  
• Analog line input: RCA with selectable gain levels 
  
• Dimensions: approx 224 × 186 × 53 mm; Weight ~1.3 kg 
  
• Top 20 Questions About Matrix Audio mini-i Pro 4

What is the Matrix Audio mini-i Pro 4?
It is a high-performance network streamer, DAC and headphone amplifier all built into one compact unit.

What systems is it best suited for?
Ideal for users who want a single “all-in-one” source component feeding either a headphone setup or a stereo amplifier setup.

Does the mini-i Pro 4 support headphone usage?
Yes. It offers both 6.35 mm single-ended and 4.4 mm balanced headphone outputs with strong driving capability.

What kind of connectivity does the mini-i Pro 4 offer?
Balanced XLR and unbalanced RCA outputs, analog input RCA, digital inputs (USB, optical/coax), HDMI ARC input, Ethernet and WiFi.

What formats can the mini-i Pro 4 play?
It supports high resolution PCM up to 32-bit/768 kHz, native DSD up to 22.4 MHz and is MQA capable.

Does it work as a pre-amplifier?
Yes — with its line outputs and volume control, it can function as a preamp feeding a power amplifier.

Does the mini-i Pro 4 support streaming services?
Yes. It supports Roon Ready, TIDAL Connect, Spotify Connect, AirPlay 2, DLNA/UPnP and local playback from NAS or USB.

Can it integrate with a TV?
Yes. The HDMI ARC input allows you to route TV audio signal to the mini-i Pro 4 for high-quality playback through your audio system.

Does the mini-i Pro 4 have analog input?
Yes. It provides an RCA analog input with selectable gain levels enabling connection of traditional analog sources.

What headphone power performance does it offer?
Balanced out: ~2,200 mW at 33 Ω; Single-ended: ~1,200 mW at 33 Ω. 

Is the mini-i Pro 4 compatible with Roon?
Yes. It is Roon Ready and integrates with Roon as a network audio output device. 

Is it compact and easy to fit on a desktop or shelf?
Yes. Its dimensions (224×186×53 mm) make it highly space-efficient.

Does the mini-i Pro 4 come with an app for control?
Yes. The MA Remote app enables control of streaming sources, volume, inputs and settings.

Is it suitable for high-end stereo speakers?
Yes—when used as a source/preamp it delivers very high fidelity and can serve top-tier stereo systems.

What is the sound signature of the mini-i Pro 4?
Reviews describe it as dynamic, slightly warm-neutral, highly resolving and enjoyable for long listening sessions. 

Does the mini-i Pro 4 support WiFi?
Yes. It supports dual-band WiFi and wired gigabit Ethernet for network streaming.

What makes the mini-i Pro 4 different from its sibling mini-i 4?
The mini-i Pro 4 adds headphone amplifier capability (balanced and single-ended) and other premium features like built-in volume control. 

Can I use the mini-i Pro 4 with active speakers?
Yes. It can feed active speakers via its line outputs or drive headphones directly.

Is firmware and support good for the mini-i Pro 4?
Yes, though some reviews noted the app had minor bugs early on—overall it is stable and performs well. 
Headfonia

Where can I get help or purchase the mini-i Pro 4?
For assistance or product questions, call 443-402-5055 or text 443-402-5064 to reach our team. All Elite Audio is an authorized Maryland dealer with a full home-audio showroom.