Mac Mini As A Streaming Source

I invested in a Apple Mac Mini Reference Upgrade from Mojo Audio about 5 years ago. They installed Solid State Drives, removed internal power supplies, added their Illuminatti External Power Supply and Uptone Audio External Clock. I use WyWires Platnum USB cables. I have it connected up to a Wadia DAC and use  Audirvana. I don't use it very often so might consider unloading it. This approach was the best streamer set up I have experienced and is very impressive with the addition of a refrence level Power Cable.

I put my ear up against the M2 Mini and I cannot hear the fan at all. I don’t think the processor is under much load when it is streaming audio.

Of course, there is ambient noise in the room. None of us have silent rooms, unless we live in the world’s quietest room which measures -20dB, yes, negative 20dB.

I’m willing to consider that the addition of the Aqua Linq to my Formula may improve the sound quality but I wonder by how much. I could still run my Roon Core on the Mac Mini in another room or run the Roon core on my Mac Studio, which certainly would not be taxed it.

Are there any places that sell the Aqua Linq and allow a return within a short period of time?

This isn't how I would go, necessarily but it's not bad.  The biggest issue with PC's and laptops especially, is the amount of AC noise they put back into the wiring, not to mention potential for ground loops, which can be severe with USB, depending on whether your DAC is USB isolated or not.

Try listening with your power supply unplugged and see if it sounds better.  If it does you may need a linear or low-noise supply.

Also, consider an inexpensive USB isolator.  $50 or less.

https://amzn.to/435o6wH

I transitioned from a MacBook to a MiniMac running Audirvāna to a dedicated server.  I chose Aurender running QoBuz over Conductor.  Personal preference. You must audition and use the Apps and make your own choice.  Using the dedicated server removed a high frequency glare that improved timbre, peesented a blacker background that improved detail and opened the stage with denser, more organic images.  
 

If you must stay with a computer run a music server program.  My choice was Audirvāna but again you must listen and play to make the choice.  I did have occasional but rare in frequency dropouts with Audirvāna that I could never solve.  
 

No matter which way you go a high quality USB and power cord or power supply is required (power cord or supply if you go with a server, not MiniMac unless you mod). I use WyWires Platinum with the Aurender.   A good value if they are still running their sale. Also in my system, vibration isolation on digital equipment has positive effects but not so much on downstream amplification.  I use Symposium platforms and RollerBlock Jrs.  My strong recommendation strong is a dedicated server.  Let you ears and software preferences make they choice.  Many good server recommendations from other members above. 

I transitioned from a MacBook to a MiniMac running Audirvāna to a dedicated server.  I chose Aurender running QoBuz over Conductor.  Personal preference. You must audition and use the Apps and make your own choice.  Using the dedicated server removed a high frequency glare that improved timbre, peesented a blacker background that improved detail and opened the stage with denser, more organic images.  
 

If you must stay with a computer run a music server program.  My choice was Audirvāna but again you must listen and play to make the choice.  I did have occasional but rare in frequency dropouts with Audirvāna that I could never solve.  
 

No matter which way you go a high quality USB and power cord or power supply is required (power cord or supply if you go with a server, not MiniMac unless you mod). I use WyWires Platinum with the Aurender.   A good value if they are still running their sale. Also in my system, vibration isolation on digital equipment has positive effects but not so much on downstream amplification.  I use Symposium platforms and RollerBlock Jrs.  My strong recommendation strong is a dedicated server.  Let you ears and software preferences make they choice.  Many good server recommendations from other members above.