Article: XACT(LY) - Review of XACT S1 Evo Music Server and N1 Switch

Dear @Marcin_gps,

The XACT S1 is a remarkable piece of technology that serves dual purposes as both a network switch/router and a music server/player. This versatility is a significant achievement, as it challenges the traditional distinctions between a streamer and a switch. Essentially, the difference lies only in the operating system, allowing the S1 to transition seamlessly between these roles.

As an end user, I see great potential in having a single unit that performs both functions. However, from a commercial perspective, this might be less appealing, as it could reduce the need for separate devices. I hope that in the near future, there will be a way to integrate both functions effectively. Such integration should address network noise issues, eliminating the need for audiophile switches designed to minimize this noise.

I was excited about the new developments, but I felt a bit disappointed when I was told that adding a switch was necessary to improve the S1. This leads us to a choice within the same brand: either the “likely too expensive $12k S1 switch or the more affordable $6k N1” (from WBF). Deciding between these options can be challenging, if money is no object what to choose for best SQ?

And how to understand the flexibility of the S1, which can function as a streamer one day and a switch the next? As is not the case with the N1 switch, which lacks this dual capability.

Best,

 @The Computer Audiophile,

Thank you for sharing your insights on the XACT S1 Evo / N1 switch combination. Your observations highlight several key aspects of the device:

• The S1 Evo’s consistent performance across various listening environments, ensuring high-quality sound.
• Its specialized design with focused hardware/software integration, distinguishing it from more generic solutions.
• The dedicated effort of Marcin Ostapowicz and his team in both developing and bringing this device to market.
• The exceptional sound quality, described as achieving “pure sonic bliss.”
• Your recognition on the “CASH List,” indicating its top-tier status among similar products.

Thank you for your detailed perspective—it is truly invaluable. I just wanted to clarify that the document isn’t intended to be a formal review, as the title might imply. It does not include elements such as pros and cons, comparisons with similar devices, or ratings based on specific criteria. Your insights are certainly appreciated and contribute to a better understanding of the strengths of the S1 Evo / N1 combo. However, it does come across more like a press release.
 

Thank you once again for your thoughtful insights.

Best,

8 hours ago, The Computer Audiophile said:

With respect to this review and what you believe should be discussed in a review, we’ll have to disagree.
 

My reviewing style is very different from most.

I believe that’s what I was aiming to express.

8 hours ago, The Computer Audiophile said:

I listen to many components as part of my job.

I often visit here because I appreciate your content. If it hadn’t been for your detailed review and follow-up on the Dynaudio Focus 10, I wouldn’t have a pair of them here, testing them with every source I have to fully explore their potential.
But I also do value when rewiewers place devices in context with current developments and compare them to similar products in the audio industry. Ultimately, though, it’s essential to try them out for ourselves.

On 9/4/2024 at 2:31 AM, bobfa said:

It must "Spark Joy"

Some readers may be looking for a quick, emotional take, discussing how the sound quality makes the reviewer feel while others may want a deep dive into the product's technical aspects and a more objective critical point of view.

On 9/4/2024 at 12:53 AM, di-fi said:

I felt a bit disappointed when I was told that adding a switch was necessary to improve the S1.

To @Marcin_gps, Thank you for your comment. I should have mentioned that adding a switch would enhance the S1's sound quality.
 

I don't mean to suggest that streamers perform poorly without audiophile network switches, but it's an issue we have to contend with. It's surprising to think that network management has become an art form in its own right.

Your work, whether deliberate or not, blur the conventional boundaries between a streamer and a switch. At their core, the distinction seems to hinge merely on the operating system, while the physical hardware has the capacity to fulfill both roles. From an end-user perspective, the potential of a unified device that integrates these functions is substantial. This could address the challenge of noise propagation over Ethernet, a persistent issue. Nonetheless, I recognize that pursuing this solution might not be commercially viable at present, and I understand the dilemma for manufacturers and being unable or unwilling to provide an answer today. Congrats to you for S1.

On 9/6/2024 at 1:21 PM, Marcin_gps said:

As much as I'd love to integrate both features - music server/player & switch - running simultaneously, it's not possible. Even if it was, it would cripple performance and that is sth I can't accept. 

 

And I never said that adding a switch is necessary. I wrote that it can improve sound, but this is true for any music server/streamer. 

5 hours ago, Marcin_gps said:

However we also launched USB and LAN cable: https://xact.audio/phantom/

If server/player & switch running simultaneously is not possible. It seems my best option to improve sound, and assuming there will be an R1, it seems this is how I need to assemble my streaming section before the DAC:

Modem ➔ 

XACT R1 Router ➔ XACT PHANTOM LAN Cable ➔

XACT N1 Switch ➔ XACT PHANTOM LAN Cable ➔

XACT S1 Streamer ➔ XACT PHANTOM USB Cable ➔

DAC

On 9/12/2024 at 10:19 AM, Marcin_gps said:

The S1/s1 EVO can act as a router. We ported OpenWRT system. 

 

Best regards,
Marcin
 

@Marcin_gps, you have to stop!

I’m blown away by this, and it’s hard for me to comprehend. First, I had to get my head around the idea of two interchangeable S1 units acting as a switch and a streamer. Now, the thought of a trio of S1 units functioning as a router, switch, and streamer is just unbelievable!

You mentioned it's not possible right now, but I can only imagine how impressive it will be when all three are combined into one unit, still reducing noise and eliminating extra cables. I believe we'll reach that point in the coming years without crippling performance and I’m excited to see how you'll contribute to this journey.

Best regards,

Paul

4 hours ago, Superdad said:

.

One bullet to rule them all Alex ! 😂 But seriously, was there more, or is this a cliffhanger?

9 hours ago, Marcin_gps said:

Hi Paul, 

 

Thank you.

 

It's important to understand  that, as in real life, there are no free dinners in digital audio too. 

 

The XACT S1 sounds as good as it does, because I spent years reducing overhead. 

 

Best regards,
Marcin
 

Hi Marcin,

If my suggestion to combine the functions of a router, switch, and streamer into a single device led you to consider creating a device that merges these three functions at a fraction of the cost, that wasn’t my intention. The real issue is whether we will be stuck using three separate devices to reduce noise forever, and who will continue the research and development needed to address this. It seems to me that if anyone can accomplish this, it could be you, and you should charge a fair price for it. I apologize if my suggestion came across as expecting it for free—that would indeed be unfair given the effort involved.

On 9/18/2024 at 9:32 AM, matthias said:

Beside that there are other disadvantages with this concept.

By minimizing overhead and reducing board size while ensuring proper isolation, a unified assembly with high signal quality could benefit users by consolidating devices. Sure, this concept faces challenges but I would not call those disadvantages.
With the same high sound quality, having a single device would clearly be advantageous for the end user. What disadvantages do you see in this concept?

Thanks for your comment @matthias. I believe it's possible to break from conventional thinking without compromising performance. With his groundbreaking design, Marcin has already shown that a (not officially released X1) router is no longer just a router, neither is the X1 switch what a switch used to be. More similarities than differences between each device open new ways to integration, at least if it wasn’t for XACT, that is how I see it now.
 

The challenges you mention appear easily surmountable, so who knows what the future might hold?
 

1.) Upgrades: Design for modularity, allowing component swaps without returning the entire device.
2.) Power & Cases: Use advanced power management and internal isolation to minimize interference.
3.) Regional Router Requirements: Create region-specific modules or configurable router settings.
4.) SQ Without Switch: Ensure minimal signal degradation with high-quality networking and audio components.
5.) Router in Living Room: Focus on sleek designs that blend into living spaces.
6.) WiFi Preference: Include both wired and wireless connectivity options.
7.)  Replacing Parts: Make components modular for easy replacement of individual parts. Or let go of thinking in separates : router + switch + streamer is one. 
8.)  Used Market: This applies to both integrated and separate systems, so it’s not unique to integrated. Encourage a robust market by ensuring compatibility across regions.
9.) Case Size: Prioritize compact (or customizable) designs to fit different setups.

Note that I am  not talking 5 months, but more like 5 years. Maybe that is all it takes…😎.

On 9/20/2024 at 9:54 PM, matthias said:

@di-fi

Sorry, but your arguments do not convince me at all. It seems to be the same for manufacturers.

I would never buy such a device and see only disadvantages.

I do not understand what you will gain with it. Most probably it will be more expensive than separate devices for the same SQ, but YMMV.

All the best 🙂

 

@matthias

As an audiophile, I've seen remarkable advancements in network technology tuning over the years. However, I firmly believe that the upstream network should not dictate the audiophile setup process. The explosion of costly network switches, filters, and cables has created a new audiophile network industry that, while exciting, has left us stuck in a cycle of endless tuning.

As I see it, audiophiles have projected their need for fine-tuning onto the network aspect, complicating the pursuit of SQ. So I advocate for the integration of network noise control directly into streamer and DAC devices. By achieving near perfection in this area, these devices would provide consistent sound quality, independent of network variables, and elevate the performance of every downstream component.

This approach allows us to focus on the truly enjoyable and rewarding process of downstream tuning. By eliminating the burden of managing network-related variables, we can fine-tune cables and devices with precision, creating a more efficient and satisfying path to optimal SQ.

Cheers

On 9/22/2024 at 4:49 PM, PYP said:

I believe that @Marcin_gps has posted here that he has used (or is using)his own server without additional switches and had a very good result.  

 

@PYPThanks for sharing. Indeed, Marcin achieved a solid result without the switch, but the best result came with it. I understand your desire for convenience, but convenience often aligns with good results, not necessarily the best ones. It’s worth noting that Marcin didn’t connect his home devices, like his TV, to his audio network.
For example, even a device like the Grimm can still reveal upstream network changes. My point aligns with Marcin's approach: he introduces a top-tier device that only delivers its best performance in an optimal setup—specifically, a trio of router, switch, and streamer in a rigorously controlled network environment.

However, what frustrates me is that it seems unfair to expect end users to solve this network issue themselves. We’re handed this problem, and it feels like we’re left responsible for addressing something that should have been taken care of by the manufacturers. Don’t get me wrong, it still sounds incredible, but like most streamers, it only truly shines with a better network. That said, this approach might not be for everyone—especially if you enjoy the process of tuning your network.
This is all I have to say about this here. Thanks.