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TomWoB

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  1. A lot of nice recordings ... When I think about my favourite jazz piano CD, I can't say for sure, but I'm pretty sure which one I played the most in the last 30 years, namely "Fred Hunt Trio - Yesterdays" ! Cover of the re-release (Bell Records), available on Tidal: I bought this CD in the year 1986, originally released by Jeton (wow, long time ago). Tip: first song "All Our Yesterdays" - medley of three "Yesterday" songs ... Some CD pictures: Here is a "Deepl"-Translation of the German-CD-Text: Few jazz stars can claim to have set two such eccentric records as the British pianist Fred Hunt: The musician is one of England's most sought-after session cracks, has recorded countless records with almost all the greats of swing and old-time jazz, but for over twenty years he has steadfastly refused to record a solo record under his own name. This in no way due to lack of opportunity. Rather for another reason; "After my first solo record in 1959, I decided not to make another record until a company could be found that would give me all the artistic freedom I needed. This consequence soon caused Fred Hunt a lot of trouble. British record producers quickly stamped him as a mimosa, attesting to his lack of discipline and refusing to give him the chance that this musician was waiting for. During the past years the pianist had kept his head above water with an engagement with the British "Alex Welsh Jazz Band", probably the most perfect European mainstream group. And now and then he showed what he understood by a pianistic rake in the concerts of the Welsh Band. At one such concert we heard the British musician and spontaneously decided to offer the artist a contract. But that was easier said than done. Fred Hunt listened calmly to our offer, seemed enthusiastic - and refused. That was, as Hunt admits today with a smile and pleasure, "pure tactics. I first had to find out whether the matter was serious. After such a long time, one must also be sceptical." But after numerous flights and endless phone calls, the deal was done. Fred Hunt had agreed to it. This means that the jazz world now has one more legend, the legend of Fred Hunt, whose good end nobody had believed in. All the more amazing is the result of the recording sessions, which lasted for several days. Right from the start, Hunt, with his two musicians Brion Mursell, bass, and Roger Nobes, drums, turned out to be a professional who has not lost any of his outstanding virtuosity. He shows himself to be a master of sparkling swing, arranging and layering full, warm and melodic chord cascades around his themes, only to skilfully break out into imaginative improvisations the next moment. His fellow musicians give him a lot of freedom, which he also needs to be able to return gently to the starting point after the wide arcs of tension. He never loses himself in trivialities, but proceeds with mathematical coolness. A perfect example of Hunt's rich fantasy is the medley "All Our Yesterdays", a combination of the three titles "Yesterdays", "Yesterday When We Were Young" and the Beatles composition "Yesterday". Full of elegance, but without any superficiality, Hunt works his way through the different styles of composition and combines them into a sophisticated unity. The long introduction dissolves into a surprise - but listen for yourself.
  2. And really, for the first time in years I feel that my audio setup is "finished". Pssst, that's the official statement for my wife 😁 ... my statement is more like: And really, for the first time in years I feel that my audio setup is "finished" ... for now ! That's clear, I want to say/explain for "a few years". I really enjoy my system at the moment, so there is actually no need to spend more money in other devices 👍 ... and I really enjoy the situation "having no pressure to seek the next improvements".
  3. Sorry, I was wrong, audiophile USB-outputs are not overestimated ! I took your comments (also in other threads) to heart and thought why not try something new. First I tried the iFi iSilencer 3.0, for 50 Euro certainly worth a try. And really, there was an improvement clearly audible. OK. if that already brought an improvement, what would be possible with an UpTone Audio ISO REGEN? If I would be disappointed, I could have made use of the 30-day, money back, satisfaction guarantee. But what can I say, once again a significant improvement "of simply everything". I could hear things I've never heard before, especially in bass and soundstage. The sound is absolutely fantastic! I never thought that such an improvement is possible "only within the USB-chain". And really, for the first time in years I feel that my audio setup is "finished". Everything sounds now very harmonious and balanced, absolutely stress-free, perfect for relaxed listening to music. Job done! I think the crucial key-points are: "Simple Devices" As an electrical engineer I prefer devices with simple, ingenious circuits and as few high quality parts as possible. E.g. my Lehmannaudio Linear headphone amplifier (Revision 2) with Mundorf capacitors, ISO REGEN with LT3042 voltage regulators or SBooster LPS with Schottky diodes. Even my fanless Intel NUC is a "relatively simple PC". I really don't like "part monsters" like e.g. "AUDIO-GD R-7HE". Too many parts, too many things can go wrong ! Linear Power Supplies My audio setup doesn't have any switching mode power supply! All devices are powered by a LPS (Lehmannaudio Linear has a build-in LPS, all others are powered by 3 SBooster MK II LPS). All power connections have the same phase, plugged into an Isothek EVO3 Sirius mains distribution block. Single Point Grounding My entire audio setup is really only grounded at one point. The headphone amplifier is grounded with the RC element shown below, the Qutest is grounded with the analog RCA-cable, the other components are not grounded (SBooster DC outputs are not grounded). Double Galvanic Isolated USB-Chain This is really special and was first not identified as necessary (see this thread). But now I think it's excellent: the first stage (ISO REGEN) isolates the Intel NUC and provides a perfect working condition for the second stage, the USB-input of the Qutest (clean power and clean USB signal). High Quality Cables Audioquest USB-Carbon & Ethernet Cinnamon cables, QED Reference Audio 40 RCA cable. 24/7 Operation This guarantees a stable and consistent environment. Complete system runs absolutely stable since 3 weeks. No dropouts, no glitches, no lost connections or any other problems.
  4. All SBooster LPS have their highest output power (Volt x Ampere = Watt) at their lowest voltage setting ! E.g. the values for the two possible SBoosters for EtherREGEN: BOTW P&P ECO MKII 9V - 10V - 9V x 2.35A = 21.15 W - 10V x 1.25A = 12.5 W - 10.5V x 1.1A = 11.55 W BOTW P&P ECO MKII 12V - 13V - 12V x 3A = 36 W - 13V x 2.75A = 35.75 W (voltage too high for EtherREGEN) - 13.5V x 2.1A = 28.35 W (voltage too high for EtherREGEN)
  5. The following SBoosters BOTW P&P ECO MKII should be also fine for powering the EtherREGEN: 9V with 2.35A (299 Euro) 12V with 3A (329 Euro) Attention: the AddOn SBooster Ultra MKII will not work together with an EtherREGEN ! Maybe some of you "have a spare SBooster 9 or 12V" ... 😉
  6. Hi all, old thead, but because of Qutest questions a few posts above and because of "Grounding" seems to be the major topic of this thread I will share my (short) experience with Qutest and ISO REGEN with you!. Odered on Thursday, delivered on Monday (not bad for California -> Switzerland) my ISO REGEN is running now for 72 hours nonstop in my system, which consists of: Intel NUC7i3BNH (in Akasa fanless case) running Roon ROCK ISO REGEN Chord Qutest DAC Lehmannaudio Linear Headphone Amplifier (Revision II) I have no SMPS in my complete system. The Linear Amp has a build in LPS (which is grounded), the other three components are all powered by an own Sbooster LPS. All power cables are plugged into an Isothek EVO3 Sirius mains distribution block. Grounding The LPS of the Linear Amp is internal grounded with the shown RC-part (for DC it's a 100 Ohm resistor to Earth). Via the analogue RCA-cable the Qutest is grounded too. I measured 100 Ohm from Coax-Input of the Qutest to Earth (as expected). Because of galvanic isolations and because of Sbooster DC outputs are not grounded (see Point 1 of Sbooster FAQ), I have two independent floating components in my system: Intel NUC running Roon ROCK (NUC network is also galvanic isolated by a Pinkfaun LAN isolator) ISO REGEN Does this system work? It works perfect! It's absolute stable: in the last 72 hours I never had a drop-out I never had a lost connection I can touch all cables, Qutest, ISO REGEN or Intel NUC without any effect Power consumption of ISO REGEN I measured 300 mA on the DC input of the ISO REGEN, this is exact what is expected, because: Alex C. said IR consumes 240 mA (link) Rob W. said the USB input of Qutest (USB decoder and isolation circuitry) consumes 60mA (link) Really no problems? Yes, there is one problem, the USPCB adapter is not working. My first setup was with the USPCB adapter and Roon can't see my DAC anymore .... argh ... shit. So I changed the adapter with an USB cable -> everything OK. Inserted adapter again, tried with GI switched off/on on IR -> not working. Once it was working for 10 minutes ... than DAC was lost again. So, it looks like that my USPCB adapter is "somehow working" but very, very unstable. For me not a big issue, because as a "cable freak" I prefer anyway "real cables". Now I use two Audioquest Carbon USB cables on input and output of ISO REGEN and I'm absolute happy with them. ... and ... how does it sound? I will not "finally rate" the sound already, because I think ISO REGEN is still burning in ... but it sounds really fantastic 👍. I think I have to update one of my other threads sometimes (link) 😁 ...
  7. Hi @WiliamWykeham, wow... great DAC. But now I‘m confused. In your first post you talked about „cleanest sound with Digione Sig“ and silver cable (which means SPDIF) and in your second post you talked about „USB regarded as best input“, also with a silver cable (which means USB) ... ? Please clarify: which input of your Denafrips Terminator with which connected device delivers the best sound (your opinion) ? Or do you mean „USBridge Sig“ instead of „Digione Sig“ ?
  8. Hi WilliamWykeham, which DAC do you have? Same DAC tried with Digione Sig and/or SMS-200 Neo? Attention: what makes really the difference? The output quality of these two endpoints or the quality of the two different digital inputs of your DAC (SPDIF vs USB)?
  9. I did some power consumption measurements to see how "well" my Sbooster together with my Intel NUC does operate. First of all a tip: use the 18V setting on a Sbooster 18/19V, because NUCs can operate from 12-19V and Sbooster delivers more power at 18V, see Sbooster specification: 18 Volt: max 2.25 Ampere = 40.50 Watt 19 Volt: max 1.85 Ampere = 35.15 Watt (5 Watt less!) My NUC has the following specification: Intel NUC Baby Canyon NUC7i3BNH, fanless with Akasa Newton S7 case 16 GB Corsair Vengeance RAM (2x 8 GB) 250 GB Samsung 860 EVO M.2 SSD (Roon ROCK with Database) 2000 GB Samsung 860 EVO Basic 2.5'' SSD (music files) I made myself a tool, which allows exact measurements with the "Sbooster cable system": Together with the Fluke 115, which has a Minimum, Maximum and Average value functionality, I measured the following results at 18.2 Volt with Chord Qutest connected via USB (test intervals 1-3 minutes): Booting NUC (only a few seconds): 1.0 Ampere (maximum) Roon Idle (no music playing): 0.36 Ampere (average) Playing music 192 kHz, 24 bit on local USB DAC Qutest: 0.45 Ampere (average), 0.53 Ampere (maximum) Playing three independent 192 kHz, 24 bit music streams (USB DAC + 2 network endpoints): 0.52 Ampere (average), 0.79 Ampere (maximum) Importing music into Roon library, import setting "Fast (1 core)": 0.68 Ampere (average), 0.99 Ampere (maximum = copy & import file) Really interesting, during the whole two hours measurements, I never saw a value > 1.0 Ampere. So, the NUC consumes never more than 20 Watts! It seems to be a "low power" music server, so hopefully "less noisy" 😉
  10. Hi all300b, here is my proposal for a cheap 24/7 Roon Server: Self build Roon Nucleus Regards Tom
  11. Hi chauphoung, but not only output is important, connected DAC is relevant too (in my opinion DAC is more important) ! There is another important thing: the complete signal path with an "Audiophile USB-output" you have the perfect connection to your DAC: I agree. But what is with the rest of your signal path? Typically it goes via a noisy home network, or did you spend hundrets/thousands of bucks for audiophile switches, microRendus, ... the complete signal path is relevant for sound quality! combination Roon + USBridge Sig: as I known you can only setup a RoonReady signal path with Ropiee, with e.g. moOde you can't. The forums are full of posts about connection problems, dropouts, ... other RoonReady endpoints like SOtM sMS-200 have noisy DC-DC converters inside too my setup has the "simpliest RoonReady signal path" you can have! It's running for two month now, without any dropouts or other connection problems Roon Nucleus is known as an "Audiophile Music Server" Read the White Paper a fanless NUC with Roon ROCK is a Nucleus (if correct NUC board is selected) especially in case of powered by a linear power supply like a Sbooster (attention. NUCs 7th generation can be powered by Sbooster, NUCs 8th generation not) network connection of my NUC is also galvanic isolated with a Pink Faun LAN Isolator With all my thoughts about signal path and Nucleus improvements, I think the Nucleus USB-output delivers a really good USB signal for a good DAC! Regards Tom
  12. Hi zackthedog, hi vortecjr, some comments to your points: I have compared my NUC with my previous "Audiphile SPDIF-output" (Pi & Digione), result: I couldn't hear any difference I didn't compare it with an original Nucleus, because I don't have one. But I don't expect a difference, because: - HW is the same (Nucleus is a i3 NUC, Nucleus+ is a i7 NUC (see YouTube) - SW is the same: Roon ROCK I agree: USBridge Sig has for sure a better USB signal. But depending on the DAC, does it make "at the end" on the DAC analog output any difference? ... that's the big question! Because of Qutests galvanic isolation, "cleaner" is (maybe) useless and because of Qutests re-clocking "jitter" too My NUC is running 24/7. So there is no need, that my "normal PC" have to run when I listen to music. Btw: my wife is using this Roon Server too on her iMac My NUC is powered by a Sbooster power supply Conclusion: I really understand your points, I think the MOST important thing is the DAC! Depending on the DAC, the qualitiy of the DAC digital inputs maybe doesn't matter (bit perfect signal possibility required). That's why I wrote in the headline " ... Roon Nucleus USB-output CAN be enough". In case of my setup, it IS enough 😉
  13. Hi all, have a look at my thoughts about "Audiophile USB-outputs" (e.g. USBridge Signature):
  14. Hi all, for a long time I was very happy with my SPDIF source Raspberry Pi with Allo DigiOne and moOde, but the UI of moOde has some limits. So I decide to switch to Roon. Another point was, I see some limits of a synchronus protocol like SPDIF, a "bit perfect signal" seams to be easier reachable with an asynchronous protocol like USB, which allows an error correction (copyping files via USB is in practice typically bit perfect). So I was searching for a "high quality USB-source", which brings me to e.g. "Allo USBridge Sig" for 300 bucks ... without the Roon Server. My favourite Roon Server is a Roon Nucleus, which costs here in Switzerland 1800.- Swiss Francs (approx = Euros) ... OUPS. So .. now I come to the point 😉 In case of you have a good DAC with galvanic isolation (I think most the people in this forum have something like that), the quality of USB-output I think "is not so important". Because of the asynchronous USB-protocol, the DAC must anyway do a re-clocking of the signal by its own, so e.g. Jitter is the problem of the DAC, not the problem of the USB-output. The USB-output must "be only good enough" to deliver a bit perfect USB-signal. I have a Chord Qutest, which have like most of Chord DACs an USB galvanic isolation and because of Rob Watts technology jitter is not an issue. So, which is USB-outpout should I choose? I'm big fan of the Roon Nucleus, which can be also "work as a USB-output", not as an "Audiophile USB-output" (it's a PC), but with a Chord Qutest this seems to be not a problem. The bigger problem is the price of a Roon Nucleus, 1800 bucks is too much for a "fanless Intel NUC" (the Nucleus is nothing else). So I decided to build my "own Nucleus": Intel NUC Baby Canyon NUC7i3BNH (PC hardware of the Nucleus for 300 bucks, same price as a Allo USBridge Sig!) some additional parts are needed to: 8 GB RAM and a SSD for Roon Operating System (together 100.-) Akasa Newton S7: matching aluminium fanless case for the Intel NUC above (another 100.-) the best: Roon Nucleus OS = Roon ROCK can be downloaded for free, see Roon ROCK - get started clear ... Roon license you have to pay, like a original Roon Nucleus So, for 500 bucks I can get a "perfect fanless Roon Server in an aluminium case", which can direct deliver an USB-output for my Chord Qutest ... PERFECT, that's what I need! So, that's what I did 👍 ... and maybe I can inspire some of you to think about "where should my money go" ... into "Audiophile USB-outputs" or into "more useful stuff" (my opinion).
  15. If you use a SBooster (5V) for the clean side (makes sense), you can improve it even more with the usage of a "SBooster Ultra 5V" (Ultra). I do this with "my self made Signature" (DigiOne Standard) 😉 ...
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