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FredM

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  1. @RickyV, @Nenon, @beautiful music and others, here's a link: https://audiophilestyle.com/forums/topic/58754-grimm-audio-mu1-server/?tab=comments#comment-1041832
  2. As mentioned in the opening post, I was intrigued by the importance to match the source output format with the ‘native’ format of the DAC chip/module. An recent article from 6Moons goes in more detail, some snippets: “But when a DAC runs its own upsampler as the vast majority does but still allows you to defeat it, comparing it to the MU1's own filter can painfully reveal the resolution losses of generic on-chip upsamplers.” “ .. helps offload a DAC's heavy calculations when the latter converts music data from the digital into the analog domain.” “Throughout the listening period we switched between TotalDAC and T+A DAC 8 and each time found the TotalDAC in non-oversampling mode to be the preferred partner.” Specifically regarding the Grimm MU1 server/streamer, for me it ticks all the boxes, and more. Perhaps in the Netherlands we’re spoiled, Grimm is well respected and the MU1 is reckoned as a state-of-the-art digital source (the Dutch site hifi.nl has even covered the MU1 in three in depth articles). Some other insights from the latest 6Moons review: "In Grimm's Eindhoven shop they spent a lot of time and effort perfecting a switching power supply which became a 2-storied affair. It is prepped for future expansions and was developed using jitter measurements on the audio clock.” “The maximum sample rate for S/PDIF is 192kHz. USB supports 384kHz but eliminates a clock signal. S/PDIF's embedded clock signal meeting the MU1's superior clock is sonically far more relevant than sample rates above 192kHz!” “Compared to the Taiko SGM Extreme … the MU1 costs 2.5 times less, weighs 1/10th … and already stands out for its remarkably effortless listening quality.” The Grimm MU1 in action, on top of a rather exclusive platform 😉 I’ve had the opportunity to listen at the MU1 on three occasions, leaving me (and others) nothing less than astonished with the impact of dynamics and accuracy and yet beautiful stress less sound (sets from €40k to well over €100k). Unfortunately it’s not my expertise to (even try) to describe a sound, I’ll just keep admiring those who can 😊. For me the MU1 has all the advantages of an one box solution (synergy, in-house end to end design), without the disadvantage: upgrade flexibility. As I have no relevant electronic or software DIY skills myself, Grimm has a good track record supporting its customers with future upgrades for their products. This is very comforting in a digital area where new discoveries and improvements are a constant. Oh dear.. I almost forgot, as @Nenon, @RickyV and @beautiful music have already requested, here's a link 😘 https://6moons.com/audioreview_articles/grimm/
  3. Haha guys, I’m typing a post in the Grimm MU1 topic 👍
  4. The Grimm MU1 in action, on top of a rather exclusive platform 😉
  5. From Stereophile: Innuos unveiled a prototype of the Statement at the 2018 Rocky Mountain Audio Fest and launched the product in early 2019. At the 2019 RMAF, they launched the PhoenixUSB reclocker. Expected next is PhoenixNET, an Ethernet reclocker, which Vitorino likens to an audiophile network switch. In 2020, Innuos intends to completely revamp its software while also expanding the company's reach beyond Europe and North America, to Asia in particular. https://www.stereophile.com/content/innuos-statement-music-server
  6. I wanted to suggest a 4 hour listening session playing Diana Krall on repeat using TLS products. But that would introduce a realistic chance the track can’t be played at all..
  7. Besides Ian Shepperd (host) and Eelco Grimm, Bob Ludwig and Bob Katz are in the panel. Tool - Fear Inoculum has won this years award. Great discussion going on.
  8. Anyone reading this: Eelco Grimm wil take part in the Dynamic Range Day webcast in approx 1.5 hour. Please enjoy:
  9. The digital front end has made a lot of progress in the last years. Besides the DIY solutions, it’s great to see innovative turnkey products hit the market. Just to name a few I guess Antipodes is long known for its DX servers and now CX+EX combo, recently Silent Angel has introduced an affordable Rhein server (~ €1.500) and -on the opposite side of the spectrum- the Taiko Audio SGM Extreme server has received the highest appraisal from users and reviewers (at €24.000, see recent reviewed at 6moons). It kinda surprises me that the Grimm MU1 server went under the radar here at AS, so -with more spare time at hand these weeks- good to share and introduce this server here. Coincidence or not, in about 1.5 hour drive from Taiko Audio another Dutch high end manufacture is located: Grimm Audio. Currently mostly known for its ultra-low jitter clocks (aimed at studio’s with Guido Tent) and LS1 speaker system line up, Grimm Audio has recently launched its MU1 server (€9.800). In short the MU1 is a Roon core server with Grimms oscillators, the inhouse developed power supply, endpoint with an inhouse designed FPGA board as the magic ingredient (which converts / up- or down samples to the desired format). Like other Grimm products, the MU1 is upgradable overtime (upgrade of the existing components and placement of a internal DAC). The most interesting thing for me is that the FPGA is aimed to match the outgoing digital signal with the ‘default/native’ bit depth/sample rate of the connected DAC. For me this was a new approach, only later I discovered that Auralic has a similar approach with the Sirius G2 Upsampling Processor (€ 6.300). I’m not an expert by any means so I prefer to link to an interview where Eelco Grimm gives a proper explanation (time stamp, English subs). Have I been sleeping for years, or have more servers/streamers applied this DAC matching-approach? Quick links for a fast introduction/understanding: MU1 Interview Eelco Grimm (English subs) The “Pure Nyquist” filters of the MU1 Company overview Hans Beekhuyzen Productpage and reviews (6Moon has also a review of the MU1 lined up)
  10. What a review @austinpop, I very much appreciate your effort, with all the different use cases a fantastic source for those want to learn more about the EtherREGEN. 👍👍👍 ps. For those who want to learn about The Linear Solution (TLS), be aware! Here are some first hand experiences... :
  11. Could this perhaps be it? Where I’m still pondering how the 5ppb oscillator would fit in 🤔
  12. In that case, it would be interesting to see a JCAT endpoint, fanless server or -even better- a NUC Compute Element JCAT expansion NET card. I’ll keep my fingers crossed 👍
  13. Impressive pair, are you planning to compare them with the Transparent Power Isolator? (A glimpse on the right of the picture??)
  14. A new keen fanless NUC generation has been introduced a couple of months ago. Several configurations are possible by selecting a specific chassis, system boards and ‘compute’ element. They’re available for pre-order at the moment. More info NUC Elements http://www.fanlesstech.com/2020/02/inside-intels-nuc-elements.html https://hexus.net/tech/news/systems/137360-austin-beach-intels-first-fanless-nuc-design/ https://simplynuc.co.uk/austin-beach-chandler-bay/ Besides being fanless out of the box (!!), there is also an expandable model that by default offers a free slot to install a separate card, such as a clocked USB or Network output. With such an add-on card, it will be very very easy to create a powerful Roon server with a relevant output. I would love to see PinkFaun, JCAT, Uptone, Allo, Sonore, ... to jump in this area. Are there any other views about the possibilities the NUC Elements offer, and which add-on would you like to see?
  15. And hold our breath to see how the ‘Junior’ version of the Extreme will look like 🍿
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