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  1. Just wondering if anybody out there has the new JCAT Xact S1 server/streamer?? I have had one for a under 1 month and it is quite impressive IMHO. It combines all the knowledge marcin_jps has learned in the decades of time he has spent working in the digital playback field. JCAT components help optimize DIY or custom servers all over the world now. This is a new place or category in digital playback field. This component is as important as the MOST expensive DACs out there. I am just a client and have no other affiliation to JCAT or Marcin. I am giving my opinion because I feel the Xact S1 is an exceptional game changing product. I would like to hear about others who have or are about to have the JCAT Xact S1 in their system. Thanks for reading. Celebrat
  2. For product details and ordering please visit JCAT: https://jcat.eu/product/optimo-nano/ Background Like many others here on Audiophilestyle I have followed the experiments and subsequent wisdom that has been freely shared on the forums with great interest. It’s been a real eye opener for me. My first attempt at a DIY music server back in 2016 turned out to be more of a basic media server to be honest. I used: A cheap gigabyte motherboard (I thought that “DAC-UP” would guarantee supreme audio!). A low power Intel processor. Generic RAM Pico PSU and external laptop power brick. It sure looked the part, in its fancy Streacom case, but I had lost everything I loved from my beloved CD transport. So, my first attempt at moving over to digital audio was an absolute sonic failure. 5 years on and the solution to the lifeless hazy digital sound that I was presented with can now be explained and overcome. One of the greatest experiments I undertook was bringing my gaming PC down into the living room. Now it was never meant for permanent residence, but when you hear what high end CPUs (e.g. Intel K series) and the right software (which was Audiolinux at the time) are capable of then there is no turning back. ‘Wow’ I thought to myself, the advice on the forums is right! The dynamics where back. Why did my Gaming PC sound so good? You learn that it’s a multitude of factors, the lower latency and performance of gaming class CPUs, the improved layout and lower impedance of traces on the gaming motherboard, the improved voltage regulation on the motherboards VRM. Very quickly you start to understand the recipe that works. Several iterations later and you reach the point where you start to consider adding dedicated hardware… you question yourself if €800 on a JCAT PCIe card for improved USB output is worth it. You read the early opinions on the forums, which are glowing, but then you hesitate because you are worried that you might not achieve the same results. Luckily I have found that the sonic impressions posted here on every component and tweak I have tried has been reliable – it’s great that everyone on Audiophilestyle seems to have golden ears! JCAT Optimo Nano So, I followed the glowing reviews and purchased a JCAT USB XE and despite my initial doubts it did make a very noteworthy improvement to sound quality. But then I had the dilemma of how to power it. The JCAT USB XE card in isolation is a good jump up in performance because even if you use a standard ATX/SFX power supply the card still filters this power through LT3045 linear regulators and filters (reducing the noise floor). But, I knew that isolating the USB XE card from the other demands that are placed on my music server’s power supply would bring further improvement. I had previously owned a Paul Hynes SR5 that I used to power a NUC, and had also heard a Sean Jacobs DC4, so I had a reference as to what I should expect in terms of better solutions for powering the USB XE card. My first attempt at powering the JCAT USB XE was using a 5v MCRU power supply, not bad by any means, but certainly not the improvement I was looking for. Next up was a Teddy Pardo 5v 3A linear power supply – the same one that I used in my daisy chaining experiment with the JCAT USB XE and a Chord Qutest. Now that sounded good. However I lusted after a one box solution without the need for extraneous power supplies. I did purchase an Ian Canada Ultra Capacitor Conditioner Board, but ultra-capacitors did not seem to impart the same sonic benefit as regular high grade audiophile capacitors. So when the JCAT Nano was announced I was quick to order as it matched my aims. Review system and installation of the JCAT Optimo Nano I have been running a Asus ROG Maximus XI Apex z390, Intel 8086k, APacer Ram, Intel Optane M2 SSD and HDPlex 800DC-DC with their 200watt switched mode power supply for a while. Network is a completely unmodified Buffalo BS-GS2016 switch running optical to a Solarflare card. I run Windows 10 LTSC (Taiko Audio use this as well) which despite lacking any form of optimisation or tweaks on my part sounds remarkably good – it imparts good body to the sound compared to linux based solutions. I have directly compared my DIY music server to a ‘tricked out’ Innuos Zenith and there was not much in it in terms of sonic performance. Happy Days. Surgery on my DIY music server was pretty straight forward, even though it is a little crowded, I decided to place the JCAT Optimo Nano on top of the HDPlex 200w power supply using its 3M self-adhesive backing. JCAT Optimo Nano installed. JCAT provides the molex cable that takes 5v out from the Nano to your JCAT PCIe card/SSD. But they do not include a fancy power input cable. There is a good reason for this – every make/brand of power supply has a slightly different pinout, so if you are using modular cables you have to use the manufacturer supplied one – otherwise you might accidentally create an electrical short! Alternatively you can very careful crimp your own, or do as I did if you want a good quality cable and purchase a Ghent audio Molex-6P to LP4 Gotham OFC Power Cable using JSSG360 shielding which is designed specifically for the HDPlex 800w DC-DC (not shown in the above photo!). The Ghent audio cable made life really easy. Once this is done, make sure all of the power connections are secure, close the lid, remember(!) not to re-connect the now outmoded external power supply and boot up! Easy. Sound Reviewing power supplies can involve a lot of carefully powering down and switching of connections, but helpfully everything else stays constant, unlike evaluating speakers or amplifiers there is no need for level matching here! Thus a subjective impression can be gained without much fuss. In a nutshell here are my findings for the JCAT Optimo Nano: The €375 asking price is absolutely warranted, despite its small size the JCAT Nano performs as well, if not better, than an external linear power supply of the same retail price. The JCAT Nano provided an increase in resolution compared to my Teddy Pardo, whilst provided the same soundstage height and width. The increase in resolution was also not at the expense of body and warmth, which I find impressive. The Teddy Pardo with its super regulators sounds dryer and leaner in its presentation. The Teddy Pardo tries to pull apart the images within the soundstage, this is what makes it sound leaner but somewhat more open. Yet, image localisation with the Nano seems to be better – you get clearly defined outlines and rock solid imaging. The Nano has a slightly more front row (forward) presentation with both vocals and music existing on a similar depth plane, but it is not significantly removed from the performance of the Teddy Pardo. Bass response and frequency extension feel subjectively the same, but the JCAT Nano has more subjective weight in how it delivers music. I don’t know if it could be differences in transient response, power supply impedance or power reserves, but I find that the more powerful presentation that the Nano delivers music more intelligible / easier to follow. I would also like to give you another example to aid your understanding of how the JCAT Optimo Nano sounds. If the Teddy Pardo sounds like a First Watt flea powered amplifier, then the JCAT Nano sounds like the grunt you get from a large Class A muscle amp… it is more easily able to fully flesh out the performance. Another parallel would be what I experienced moving from a low power CPU to a gaming CPU. If you have experienced either of these scenarios then you will have a good understanding of what the JCAT Optimo Nano brings to the table. Conclusion The Nano has been specifically designed to work with JCAT products, there is therefore a synergy there just like if you purchase a pre-amp and matching amplifier from the same supplier. There should be no doubt that it performs well, equalling the performance of similarly priced external linear power supplies, but with a guaranteed synergy. What is also impressive is that it achieves this level of performance without its own toroidal transformer, instead sipping power from your music server’s power supply which already has a number of demands placed upon it. In my opinion, the JCAT Optimo Nano provides me with the better rendition of the recording. It has a smoothness to its delivery, just like a car with the right sized engine, and every sonic note is fully formed and complete. It will be very interesting to see if the INITIO 3 or OPTIMO 3 DUO would sway me to move away from my ideal of the clutter free one box solution I have always wanted. The technical specifications suggest yes!
  3. View Classified Jcat Optimo S ATX Linear Power Supply *PRICE DROP* Jcat Optimo S ATX in excellent condition for sale, 5500.00 € / $5,967.00 USD LIST PRICE. Original owner with low hours. This was responsible for by far this biggest jump in sound quality for a PC based music server. No need to build your own unregulated linear power supply to send power into a dc - ATX converter, this psu handles everything. Absolutely no issues running HQPlayer at DSD512 with EC v2 modulators using an Intel 12900k in a passively cooled chassis. The only time the safety shut down was triggered was during benchmarks / stress tests. If you have a similar high powered CPU you will need to make some adjustments on your motherboard’s BIOS to limit the frequency of the P and E cores so they don’t boost too high. I set mine at 4.4 and 3.5GHz, respectively. There a lot of threads on Audiophile Style discussing proper bios settings for HQPlayer. If you are not upsampling, it can power any server on the market, or any pc/music based diy project you can conceive of. Standard ATX outputs, including 8-pin CPU, HDD (SSD), and 24-pin mobo. Very high quality cables for the CPU, HDD, and MOBO are included, and a PCIE cable can be purchased separately. An ATX mounting blank and cable gland are also included for standard cases. I bought an extra 5V DC cable that I can include for an additional $125. It can be used to power one of the Jcat USB or NET cards or the revelation audio M.2 NVMe SSD (also for sale). Everything will be shipped in the original, double boxed packaging. The PSU is huge, and heavy, so please make sure you have the proper space to set it up so it can breath a little. It only gets slightly warm, but it benefits from some air circulation. Please see the link for more info: https://jcat.eu/product/optimo-s-atx/ Price is $3,850. Buyer will be responsible for Shipping and PayPal fees if not using “friends and family”. Please check my 100% positive feedback on US Audio Mart and eBay, username: Jazzebration Please reach out if you have any questions. Thanks! Due to spending most of my time these days listening to analog, I am slowly disassembling my short lived, yet beloved, music server. Individual (mostly) items will start popping up in the coming weeks, so keep an eye out if interested. The following items will all be listed at some point: - Revelation Audio SSD / M.2 FEMTO (320GB pSLC) *SOLD - Jcat Optimo 3 Linear Power Supply (dual 5V / 3 amp out for Jcat pcie cards) *SOLD - Jcat USB Card XE *SOLD - Jcat Net Card XE *SOLD - Jcat Optimo S ATX Linear Power Supply I’m probably going to regret this, as I’ve never heard digital audio sound anywhere near this good, but I’m hoping they all find some good homes. Seller jazzebration Date 01/14/23 Price 3,850.00 USD Category Power Supplies / Power Products  
  4. I have long thought about getting a LAN-isolators from either SOtM, Acoustic Revive or Pink Faun, but actually never did. I was mostly interested in the one from Acoustic Revive, because it come with a cable at one side. It was until I read some reviews about SOtM’s LAN-isolators. Now we also have the JCAT NET isolator that cost less than the other ones. I like to know if anyone has any personal experience with a LAN-isolators they want to share, good or bad. A compare between different LAN-isolators and LAN isolators at different places in the digital chain would be even better. Marcin wrote: I use the NET Isolator with my single PC setup in 2 scenarios: 1) between the router and the JCAT NET FEMTO. The Ethernet cable from the router to the NET Isolator is not audio-grade. The cable from the NET Isolator to the PC with JCAT NET is JCAT Signature. The last 1m of the cable is crucial, similar to power cords. 2) between the router and the M12 SWITCH MAGIC or GOLD. Then the switch connects directly to the JCAT NET Card FEMTO. Note that music does NOT have to be streamed over network - the improvement in sound quality is always as long as your audio PC/music server is connected to the network. I can recommend the NET Isolator to anyone who is not interested in buying expensive network switch such as the M12 SWITCH GOLD / MAGIC. I'd recommend investing in one short (1m) audio-grade ethernet cable, the best possible you can afford and use this ethernet cable to connect your PC/music server with the NET Isolator. This combination, depending on the quality of the Ethernet cable, will not offer the same level of performance as the expensive M12 SWITCH GOLD / MAGIC, but can offer the performance that is not too far away. https://jcat.eu/product/net-isolator/ http://jplay.eu/forum/index.php?/topic/3019-net-isolator/
  5. Just finished the build of my first Audio PC and I wanted to share it here. It consists of: - HDPlex 2nd Generation H5 fanless case - Supermicro X11SAE-M motherboard - Intel XEON E3-1245V5 CPU - 2x8Gb Apacer Industrial DDR4 - 32GB Apacer Industrial SSD - JCAT USB Card FEMTO The system is powered by Uptone JS-2 LPS and runs on Win Server 2012 R2 + AO in Core Mode. Players I use are Infinity Blade, HQ Player and JRiver, with the first one being my favorite. So far, after about ~150 hours of playback I can say that it's a big step up in SQ from the regular PC I used before. The sound is much tighter, more articulate and faster. The imaging has greatly improved, the background is very dark with much better instrument separation and overall a less digital and more natural presentation. I'm posting here a few photos, I hope you enjoy them: Thanks!
  6. Late last year I upgraded my audio system and as the final touch I’ve been trying out Ethernet cables. Already I had tried the Audioquest Vodka and the Wireworld Starlight Platinum Cat 8 but didn’t hear an appreciable difference between them and the Ethernet cable that came with my dCS Network Bridge. Marcin of JPLAY advised me I needed to try his JCAT Signature LAN cable. A logical mate for my JCAT Femto Net card I thought, and I decided to give them a try. The only condition of sale was that if I didn’t hear a difference, I could return them, which Marcin granted. No financial incentive was given to keep them, or to write this mini review; I was prepared to send them back and resolve that the anti-audiophile-Ethernet mob had a point. The music I’ve been using to audition Ethernet cables is the new 24/192 remastering of the Karajan/BPO Bruckner 8 on DG and Bach Cantatas 131 & 182 from Thomas Gropper and his Arcis-Vocalisten München on Oehms Classics. Conveniently my most recent recordings, they work for the cable auditions. The legacy Bruckner, while nicely restored by Emil Berliner Studios, is not ideal, still edgy with somewhat veiled winds behind Karajan’s typically massive strings and brass. On the other hand the Gropper Bach are the most beautifully recorded choral discs in my library, and 16/44 at that! I had two one-meter lengths of the JCAT Signature LAN, but initially I restricted myself to inserting only a single JCAT cable between the file server’s JCAT Net card output and the Ethernet input of the dCS Bridge (I employ network bridging in Linux for a direct link). I started Bruckner 8 from my iPad. The shimmering, pianissimo strings of the opening were clearer, more space around them. Similarly, the slightly muted oboe entry also had much more space around it, as did the responding celli. The entire work had a more defined bottom end. I was riveted to a recording I’d had for years. The Gropper Bach, already gorgeous, sounded even more engaging with its layering of exquisite chorus, soloists and period orchestral timbres. My favorite is the “Ich harre des Herrn” of Cantata 131. Choral music playback had been problematic on my system, but the JCAT seems have been the missing link. I need to try some of my Mahler 8’s! My system sounded great before the JCAT Signature LAN, but the listening experience is even better now. I could go on about Marcin’s kindness and patience, and the meticulous, water-tight packages expressed from Poland, but you get the point – I really like the JCAT Ethernet cables and I’m keeping them. https://jcat.eu/product/signature-lan-cable/ Happy Listening, Darryl Equipment: Home-built file server -- Streacom FC8a/Gigabit H270N/i3-7300T/4TB SSD/JCAT Net Card with bridged connections/Ubuntu dCS Network Bridge dCS Vivaldi Momentum Mono Amps Alexia 2 Shunyata Sigma interconnect and speaker cable Shunyata Alpha power cable
  7. View Classified JCAT NET NEW Selling my jcat Net because I will not use dual PC price 430 with shipping by aramex & pp fee . I never install this card or use it so buyer should consider this card new . Seller NanoSword Date 10/29/20 Price 430.00 USD Category Music Servers / Streamers
  8. View Classified JCAT USB Card FEMTO × 1 Selling my jcat because I have XE. price 420 with shipping by aramex & paypal fee . Seller NanoSword Date 10/05/20 Price 420.00 USD Category Music Servers / Streamers
  9. JCAT version 1 USB Card for sale. I have the larger back plate as well and would be included. $240 including PayPal and shipping to continental United States.
  10. For sale Jcat V1.1 USB card $200 As new condition. Shipping: EU: €30 US: $50 Comes with the original box. PayPal add 4.9%
  11. JCAT USB Card, PCIe to USB Audio card for desktop PCs, is the ultimate solution for computer audiophiles who want to achieve the best sound quality from their USB DACs and USB-to-S/PDIF converters. The card created together with Adnaco Technology, the company with expertise in design of low noise high dynamic range (120dB+) data acquisition systems for sonar and radar applications, was made specifically for low noise high performance audio applications like hi-end audio playback. Specification: – audiophile USB Audio output for USB DACs & USB-to-S/PDIF converters – ultra low noise design for noise sensitive audio applications – ultra low noise linear regulators and high quality filters – high precision ultra low phase noise oscillator – uDP720201 NEC controller – two USB 3.0 connectors supporting Low Speed (1.5 Mbps), Full-Speed (12 Mbps), Hi-Speed (480 Mbps) and Super-Speed (5 Gbps) data rates – 5V for USB devices can be supplied from a PC’s power supply via an HDD LP4 connector or from an external power supply via a power jack connector – for noise sensitive applications the 5V USB power can be filtered by two onboard high performance filters with PSRR better than 90dB at 10kHz – in case external PSU is of very high quality, it is possible to bypass the filters and pass 5V USB voltage from the external PSU directly to the USB connectors – for self-powered USB devices a 5V power is not required for the card operation Price incuding shipment 300 euros.
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