Professional Reviews

Excerpts from the review of our Joule V Mac Mini upgrade by Karl Sigman:

“The Joule V offers a very significant improvement in sound over it’s earlier generations.”

“I would stack this new upgrade against any music server even higher in price. It’s a bargain.”

“The Joule V setup gets my highest recommendation.”

We are proud to be awarded Audiophilia’s Star Component status!

Go to "Audiophilia" to read the full review.

Excerpt from the review of our Mac Mini upgrades by Scott Hull:

“...with the Mojo [Mac Mini Media Server], the sound feels more organic. Resonance and harmonics all seem more realized. ...The Mojo Audio Mac Mini Server is the best computer source that I’ve heard in my system to date.”  Go to "Confessions of a Part-Time Audiophile" to read the full review.

Excerpts from the review of our Joule III Mac Mini upgrade by Karl Sigman:

“Even people who are obsessed with vinyl might easily believe that they were listening to just that; but all was digital.”

“...compared to my regular Mac Mini...the sound was even deeper, richer, fuller, and more resolving with amazing clarity and transparency, and so clean, with impeccable quiets and timbrel accuracy.”

“The Mojo Audio Mac Mini upgrade kit...gets my highest recommendation.”

We are proud to be awarded Audiophilia’s Star Component status!

Go to "Audiophilia" to read the full review.

Customer Reviews

Ok Benjamin,  

As you may remember, my main purpose for purchasing your power supply was to hopefully reduce or eliminate the music drop outs via my Auralic Vega DAC when implementing it's "EXACT" Femto Clock setting.  

Unfortunately there is very little if any music Drop Out change.  

However, I have spent some time going back and forth between the original internal Mac-Mini power supply and your Mojo supply.  The sonic upgrade when switching to your design is HUGE in my system.  Far more refined from top to bottom.  Lots more musical, Alive, dimensional and far more capable a higher volumes where it is so much more fun to listen because the music simply expands and fills the entire listening venue.  

When listening at these higher volumes with the stock power supply in line, the music is just too harsh to enjoy.  

Cool stuff Benjamin.

– Lance A., USA

Hi Ben,

I wanted to let you know that I received the PSU today It's fantastic!!!!

Thank you so much for giving me the opportunity to return the previous unit in exchange for this Joule V....truly stellar customer service.

I'll be your biggest supporter and I'll try my best to spread the word around with all the people I know about your amazing products and professionalism Many thanks

– Alessandro P., Europe

I am writing to express my delight and appreciation for the mods you recently completed on my 2012 Mac mini. In addition to your usual conversion you also added a 2nd 1TB [SSD] hard drive, partitioned my primary drive and downloaded both windows and JRiver.

The workmanship is first class and the sound rivals any digital player I have heard. For the first time I can say that my system sounds great using my computer, not just great for digital!

Much of this is certainly due to the Joule V which smokes my old Joule III. I am grateful for the trade in program which adds value to the purchase.


– Anthony C., USA

Mother fucking holy shit, OH MY GOD. Thank you for all your help. What incredible, mammoth, big, bold sounds are pouring out of this little computer. Sublime, detailed, quiet, yet bombastically LOUD. Tambourine, cymbals, bass strings, even Solina keyboards, decay like they’ll never end. Norah Jones made me cry like a Divergent-loving teenage girl. You are a goddamn genius. Genius! Thank you, thank you, thank you.

– Monty C., USA

My wife: "If I hear the difference?! Hell yes I do... It's way more 'sprinkling', it is as if the stage got bigger..."

Ben, I can't give you a bigger compliment...!!!

sprinkling = full of sparkles :-)

– Ronald, Norway

Hi Benjamin,

Just wanted to give you some brief feedback on my experience with the Joule IV [DIY power supply upgrade kit] for the Mac Mini.

Installation was easy, especially with the instructions you provided - actually the most tricky part was putting the Mac-Mini back together, specifically the metal grille with the airport antenna which is a real fiddle...

Regarding the sound, I was expecting good things, but I wasn’t quite prepared on how BIG the impact would be. To summarize the effect, which is most noticeable on any well recorded acoustic music is what I can only describe as stunning, lifelike, naturalness of recordings that I now perceive. As a general characteristic, all recordings that I listen to seem to have a “sparkle" and naturalness to them that I had not noticed before. In particular for vocals, not only is the stereo image better, but the realism is now quite uncanny - voices have a real presence, and sound lifelike, i.e. if the person is really present and singing in the room.

In fact this is the overall characteristic/improvement - the sound now has a lifelike vitality and realism across the board, and even iTunes 256kbps tracks benefit from this, although obviously the biggest benefit is on HD tracks. For example, I have been listening to...192KHz/24 bit, and the sound is so good, so lifelike sounding, that if I close my eyes it does not take much to imagine that I am actually listening to the sound live...I have never heard a digital set up sounding like this before!

So, I’m totally blown away! Now I just have to find time to listen to my whole music collection afresh…


– Paul S., USA

Well after several days of needed burn in this thing sounds amazing. The music is so real and I get lost in the enveloping beautiful music. Open and detailed in a way that brings you into the music. 

Most  impressed.  

Crazy imaging a stage presence now. 

Nice job on this power supply Ben!

 – Bill Dion, USA

This is my first post at CA [Computer Audiophile Forum]. I found this sight while researching Mac mini music servers. I am fairly computer illiterate but have done a lot of research in the past three months and settled on the Mojo Audio Joule II and ordered mine the day the newest Mac Mini became available. It arrived last Friday and I have been very pleased. It was $2300 shipped with the newest Mac mini and I believe 10 or 16GB RAM, all 3 second option filter upgrades, SSD drive, Audirvana and hard wired together. 

The key is it sounds wonderful, looks professional and solid and works flawless. It sounds far better than my Macbook Air and as good as anything I've heard. To me it was clearly worth the money and I am very very happy and no headaches trying a DIY thing myself. I'm glad I ordered one and I think I have gotten a great deal. It cost me half of the Naim system I was thinking about and to me it sounds equally good or better.

 – Jim, California (posted on Computer Audiophile Forum)

My first post at CA [Computer Audiophile Forum] also. And I can only echo everything Jim said above. I first heard of Mojo Audio at RMAF, and liked what I heard, and liked what I heard talking to Benjamin as well. Very honest, forthright person, no BS sales pitch. 

I received a Mojo Mac mini and power supply a few days ago, and compared it side by side to a dell laptop, a stock mac mini, and to a Core Audio Kryptos music server.

The difference was quite obvious. It was hard to tell the difference between the dell, the stock mini and the Core audio server, unless playing them side-by-side. The Mojo server is obviously in another league. Right out of the box. More solid build quality, and totally plug-and-play. Much more detail, as my wife kept pointing out, you can hear more individual instruments in a large group, and hear individual voices and parts in massed choral work. Hear the distinct timbre of woodwinds, strings, brass. e.g. Hearing a clarinet then an oboe in Joni Mitchell’s Down to You, the complementary harmonizing of the two jump out at you, rather than being "homogenized." Very happy with this one!

– Robert Taylor, NM (posted on Computer Audiophile Forum)

The package arrived this afternoon and we are listening since half an hour. The power supply is used without dc filter by now and powered by your new [Enigma power] cable.

We can say that it clearly destroys Kingrex SLA battery.....sound quality is simply on another planet, it has been like comparing apples and oranges...BRAVO!!! GREAT JOB!!! Seems like [it is] sounding better minute after minute…

– Fillippo, Italy


Your [Mac Mini] power supply [upgrade kit] sounds incredible.  More detail- more body- less fatiguing.

This is a necessary component for computer-based music.  This is the first time I have surpassed an all in one CDP using computer audio.

I am very thankful.

Warm regards,

– Steven Rubin,  Israel

Hi. First I want to thank you for your help. Second the installation [of your Mac Mini power supply upgrade kit] was easy with the information you sent me. After the installation I listen several files the change was incredible in all aspects. My best upgrade I've done to my system. Thanks,Thanks,Thanks. I would like to express more details but do not speak much English.

– Jose, Puerto Rico

I started my Mojo journey with the Mojo Lucent ICs which were simply the best I had heard at the time as compared to anything that wasn’t out-of-this-world costly. Then the Mojo music server blasted away a lot of paradigms that I held for the 25 years I have been participating in the world of the high end.   I first tried the Mojo Mac Mini with the basic power supply and found it to be superior to any transport I had used (primarily Naim and Cambridge audio),  then at Benjamin’s suggestion I tried the upgraded power supply and was blown away at the difference.  How did a better power supply for the little Mac Mini make such a big musical difference?  I still don’t know, but it does.  It improves all areas of musical reproduction, most noticeably the detail and dynamics.  I was using a Chris Johnson modified Benchmark DAC (with the Burson discrete output stages) with the music server and was loving it.  The modified Benchmark is an analog sounding music maker – way better than the stock Benchmark.  In fact, the modified Benchmark literally made the stock DAC unlistenable and this is no exaggeration.  And the stock DAC is considered a reference by a number of reviewers! I don’t see how anyone can go wrong when Mojo Audio give you 45-days to audition their products.

– Owen S., USA

I just received the Joule II power supply. Gorgeous sound!! More detailed, instruments much more separated, wider sound stage. Really High fidelity. Thank you.

I just took the time to compare with and without the Joule II power supply - like night and day!!

Much, much more natural, spacey, detailed but warm.  And thanks for your advice about Audirvana, more natural than Amarra ;-) 

– Vincent S.

Just to say I got the Joule PSU today !! I heard my Mini with the PSU for about 1h, and the sound imaging is really much deeper and larger than before. Dynamics is also better (bass impact, drumming…). Many thanks to you and greetings from France ;o)

– Jean-Francois, France

At first listen I notice the individual notes are cleaner sounding and the background percussion instruments are more prominent. I think I am very close to the point of diminishing returns. I am going to wait awhile to really listen to the Joule II. It wasn't as big an improvement as the computer and modded PS. I have paid a lot of attention to detail in this system, power, vibration control, acoustics treatments act. This system sounds just fantastic. I haven't walked out of any local stereo stores lately and thought I wish. Just the opposite. Your power supplies and the mac server are far and away the biggest improvement that I have made. I feel very lucky that I found you and Mojo Audio. I wish that more audiophiles could find you, but then sometimes I'm selfish and think that I am enjoying a forbidden pleasure.

I have no doubt the it will get better. Each time before I heard an improvement when I listened after 8-10 hours them a bigger improvement  after 24 and it just kept getting better for quite a while. I could hear an improvement in the first song that I played. You're right it's the separation of more instruments and instead of first hearing the bongos now it's the tonal characteristics of the bongo's. I am finding it harder and harder to play music and not just sit down and listen. There are times when I hear things and just chuckle because I have not heard it on some very good systems.

– Ed, USA

It's a kind of Magic! Thanx.

– Vincent le Bienheureux (eBay feedback)

Mojo Audio's latest music server with the new Joule III power supply surpasses not only the earlier versions, but it also surpasses all of my previous attempts during the last 30 years to find a front end that allows me to simply enjoy and feel the music, rather than constantly have to think and become annoyed by the sound.

For the last three decades I have tried all kinds of power line AC conditioners and rather extreme battery supplies, and only to become disappointed when the novelty of the initial difference wore off. Each product managed to change the sound in one way or another, but it was typically a "side-grade" rather than an up-grade.

I then came to know Mojo Audio through their power cables and interconnects, which were wonderfully neutral. I wish I had understood the obvious but elusive concept and philosophy of pursuing the ideal neutral much sooner, as it really increases pleasure and saves money by minimizing the continuous pitfalls and vicious cycle of of always having to look for a new component that will somehow cover-up for a weakness or exaggeration somewhere else in the system.

The sooner you - as an audiophile - experience the soundness (couldn't resist) of the neutrality and musicality of Mojo Audio products, the more you will be free to enjoy your music right away, and save money in the future by minimizing the constant craving for the the "up-grade" fix.

As a side note, since I still have the floor/page. I sometimes amuse myself by inviting analytical left brain engineers to enjoy the Mojo Audio products. Typically, they become somewhat annoyed or bewildered when I demonstrate the real musical enhancements accomplished by the Mojo Audio product line.

Call me mean or call me an audiophile!

Maybe it's the cognitive dissonance of hearing something that can not be immediately explained by the textbooks of their hard earned degrees. Fortunately, my degrees are in different fields, and I have no problems whatsoever to enjoy any present or future musical upgrades that Mojo Audio hopefully will enrich my life with.

Thank you, Mojo Audio!

 – JP, CA

I had made my PSU and IFM done in my quad-core 2012 Mac Mini. It does a good job and stage more wider and clarity improved significantly.

 – Albert Chen, China