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Thread: Lumin U2 Mini

  1. #51
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    Re: Lumin U2 Mini

    Quote Originally Posted by wklie View Post
    ..Note that you can use Esoteric Sound Stream app to control playback from Lumin when you're not using Spotify Connect or Tidal Connect,.
    I didn't have the patience to learn how to drive the Sound Stream app properly, it wasn't intuitive enough for someone who was used to native Spotify app. I only used Sound Stream for the N-01 firmware updates. Which always worked perfectly.

    I haven't decided what network transport to buy. For the time being the Playstation 3 is absolutely killing it. Unclocked D1X/PS3 has now made the sonic leap over my clocked N-01. I can only imagine what N-01XD must sound like as a Spotify Connect device. I haven't priced U2 mini in this market yet, but I know it will be much cheaper than N-03T. I was inclined to N-03T simply because of the Esoteric esthetic and clock input. But I've now learned when using the preferred USB connection that neither is clocked.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
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  2. #52

    Re: Lumin U2 Mini

    Using a PS3 as a source in a system such as yours? man, thats something.

  3. #53
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    Re: Lumin U2 Mini

    Quote Originally Posted by dznutz View Post
    Using a PS3 as a source in a system such as yours? man, thats something.
    We’ve strongly encouraged him to try something far better.


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  4. #54
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    Re: Lumin U2 Mini

    How is the PS3 connected to the D1X ? Toslink optical?
    Peter Lie
    LUMIN Firmware Lead

  5. #55
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    Re: Lumin U2 Mini

    Has anyone upgraded the power supply with the U2 mini?
    Seemed to be a popular upgrade with the U1 mini

  6. #56
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    Re: Lumin U2 Mini

    How so? The U2 mini plugs directly into the wall socket.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.4
    and Rack 1.1 amp stands (pair) | Source: Kaleidescape Premiere | Power: Shunyata Everest and Denali

    On sale: Everything!
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  7. #57

    Re: Lumin U2 Mini

    Quote Originally Posted by Emil View Post
    Has anyone upgraded the power supply with the U2 mini?
    Seemed to be a popular upgrade with the U1 mini
    I did. I was lent a Sean Jacobs hybrid DC3/DC4 LPS to replace the stock Lumin U2 mini power supply. It has only 3 weeks and I can say this is a major upgrade. There is a significant increase in clarity to the music as well as a decrease in noise. The power supply is not fully being broken in but it is clear this is going to be a big step up sound quality.
    Speakers: Vandersteen Model 7s, 4 M&K ST-150Ts, 1 VCC-5; Amplification: 2 Vandersteen M7-HPAs, CI Audio D200 MKII, Ayre V-6xe; Preamp: Doshi Audio Line Stage v3.0; Phono Pre: Doshi Audio Phono Pre; Analog: Wave Kinetics NVS with Durand Tosca arm; SME 3012R arm, Ortofon Diamond Anna; Reel to Reel: Technics RS-1500; Doshi Tape Pre-Amp; Studer A810, Studer A812, Tascam BR-20; Multi-channel: Bryston SP-3; Digital: Taiko Audio Extreme> Lampizator Horizon, Oppo UDP-203;

  8. #58
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    Re: Lumin U2 Mini

    Quote Originally Posted by brodricj View Post
    How so? The U2 mini plugs directly into the wall socket.

    Lumin D2/ U1/U2 mini Upgrade Kit - Teddy Pardo Audio

    some surgery involved.
    Will probably void the warranty

  9. #59
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    Re: Lumin U2 Mini

    Quote Originally Posted by Emil View Post
    Lumin D2/ U1/U2 mini Upgrade Kit - Teddy Pardo Audio

    some surgery involved.
    Will probably void the warranty
    It will. Loser dealers that promote this should be dropped. These messed with units (and I would like to use a stronger word than “messed”) end up on Audiogon, or as trades with no disclosure of previous tampering and then problems happen with the unit and then what? We have a unit coming back from Mark (distributor) who graciously fixed it for us which I’m sure was some messed with unit we took on trade. This needs to STOP!


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    "We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."

    Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Avantgarde Acoustics, Avid HiFi, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Enleum (Bakoon), Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, Franco Serblin Loudspeakers, Furutech, Fyne Audio Loudspeakers, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, HiFi Rose, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Koetsu Cartridges, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Naim Audio, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, SimAudio, STAX, Stein Music Products, Stillpoints, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.

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  10. #60
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    Re: Lumin U2 Mini

    Quote Originally Posted by markush View Post
    So anyone can share their experience when comparing the U2 Mini to other streamers they listened to?
    Lumin's U2 Mini has been a significant improvement over my Bryston BDP-Pi, which was a significant improvement over my Simaudio MiND 180, which was a significant improvement over a couple Bluesound products I had, which were significant improvements over the Logitech products I had (Sqeezebox)?

    It's been a fun albeit expensive journey.

    Now I'm considering a second U2 Mini to replace a second BDP-Pi.

    For the record, I was just streaming Qobuz from my Mac Mini into my Denafrips Pontus II via USB, listening to some remastered jazz from the 1960s. The bass sounded muddy, almost terrible. I went back to the BPD-Pi and it was really good. It would sound even better on my U2, but that unit is downstairs on my other system.

  11. #61
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    Re: Lumin U2 Mini

    Hello everyone. Longtime listener, first-time caller here. I appreciate the wealth of knowledge.

    I could use some thoughts/guidance on an NAS for my U2 Mini. (I'm in the market for a second U2 Mini I like it so much.) I searched previous posts but did not find recent guidance for my questions. This post from 2017 is the most-recent I found:

    Quote Originally Posted by wklie View Post
    Although there's Lumin L1 for ease of use, power users may opt for a powerful NAS for use with Lumin.

    Here's the latest recommendations for choosing NAS:

    1. Must be able to install and run MinimServer
    http://minimserver.com/installing.html

    2. Either Synology or QNAP

    3. Must use Intel CPU, not anything else

    4. Comes with or upgradeable to 2GB RAM or preferably more (certain NAS models come with less AND does not have RAM sockets for user-installable upgrades - avoid those)
    My questions:

    Is the Intel CPU still required or strongly encouraged? That seems outdated.

    Would I be crazy to get a one-bay QNAP or Synology unit that has 2GB of RAM but does not allow for adding RAM? QNAP has one that is very reasonably priced and gets strong reviews for what it is. My theory is that I would like to have an NAS dedicated to music use, and I'd have another (4-bay?) NAS with RAID capacity to backup those files as well as maintain my non-use files. I'm self-employed and want to keep my audiophile life 100% separate from my non-audiophile life. And it seems I don't need a ton of firepower to fuel the U2 Mini, such that a one-bay NAS from a good manufacturer like QNAP or Synology would be fine. But of course I might be wrong, and that's where you come in.

    I guess an L1 remains an option, though budget-wise it's a stretch. But if Lumin users say it's made a big difference with respect to sound quality, ease of use, or both, I could be swayed to stretch the budget.

    Thanks.

  12. #62
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    Re: Lumin U2 Mini

    I've been using a QNAP TS-131 with a 4TB Seagate surveillance grade HDD for years. It's been great, it just keeps going. But I don't have much content on it. If I had a large collection of content I'd want a 2 bay NAS with RAID for peace of mind.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.4
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    On sale: Everything!
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  13. #63
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    Re: Lumin U2 Mini

    Quote Originally Posted by brodricj View Post
    I've been using a QNAP TS-131 with a 4TB Seagate surveillance grade HDD for years. It's been great, it just keeps going. But I don't have much content on it. If I had a large collection of content I'd want a 2 bay NAS with RAID for peace of mind.
    Thanks. That's one of two or three units I was looking at. Very helpful.

    As for having RAID on an NAS dedicated solely to music ... I buy music maybe once a month, but usually several albums at a time, so I've been backing up my music to numerous and various drives (four at last count) once a month for years. I was thinking that having another larger NAS with RAID would actually give me double backups for my music files because they'd be on the "music NAS" and also on the "bigger NAS." Unlike my work files, I'm not adding to my music files daily so I don't see a need for immediate/daily backups. But maybe I'm missing something.

  14. #64
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    Re: Lumin U2 Mini

    With a two disk RAID configuration you don't need to bother yourself with backups. If a disk goes kaput just replace it with another one and the file system will rebuild itself automatically from the parity data. My surveillance grade HDD has been spinning continuously for many years without issue. And I don't have a backup copy of any of its data.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.4
    and Rack 1.1 amp stands (pair) | Source: Kaleidescape Premiere | Power: Shunyata Everest and Denali

    On sale: Everything!
    On order: Esoteric Grandioso C1X

  15. #65
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    Re: Lumin U2 Mini

    Check out fanless x86 NAS for running MinimServer software, see if it serves your needs.

    If you have to get an ARM NAS for some reason, please check it against MinimServer compatibility first.

    2GB RAM is ok for a small library. If your library grows, you need more RAM.
    Peter Lie
    LUMIN Firmware Lead

  16. #66

    Re: Lumin U2 Mini

    Quote Originally Posted by brodricj View Post
    With a two disk RAID configuration you don't need to bother yourself with backups. If a disk goes kaput just replace it with another one and the file system will rebuild itself automatically from the parity data. My surveillance grade HDD has been spinning continuously for many years without issue. And I don't have a backup copy of any of its data.
    Sorry, but this is not a wise approach. NAS devices fail for reasons addition to hard drive failures. RAID is not a backup! Anyone with a music collection on a NAS should have a backup unless they don't care if they have lost all their music.
    Speakers: Vandersteen Model 7s, 4 M&K ST-150Ts, 1 VCC-5; Amplification: 2 Vandersteen M7-HPAs, CI Audio D200 MKII, Ayre V-6xe; Preamp: Doshi Audio Line Stage v3.0; Phono Pre: Doshi Audio Phono Pre; Analog: Wave Kinetics NVS with Durand Tosca arm; SME 3012R arm, Ortofon Diamond Anna; Reel to Reel: Technics RS-1500; Doshi Tape Pre-Amp; Studer A810, Studer A812, Tascam BR-20; Multi-channel: Bryston SP-3; Digital: Taiko Audio Extreme> Lampizator Horizon, Oppo UDP-203;

  17. #67
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    Re: Lumin U2 Mini

    Quote Originally Posted by dminches View Post
    Sorry, but this is not a wise approach. NAS devices fail for reasons addition to hard drive failures. RAID is not a backup! Anyone with a music collection on a NAS should have a backup unless they don't care if they have lost all their music.
    Hi - not knocking your statement but I have a legit question for you (I used to work in data storage).

    Knowing there are different kinds of RAID, and knowing that some employ multiple disks in one enclosure making full auto duplicates of all data in real time (same exact data, two different HD's, one enclosure) so short of it being stolen you have a back up copy, how is RAID not an option?

    Again, not trying to argue, it's a legitimate question.
    "We are all billionaires because of the huge piles sweet dough rolling in from our participation in the ongoing campaign to suck your collective brains through a stirrer-straw." - PTA Editorial Staff

  18. #68
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    Re: Lumin U2 Mini

    These are low probability scenarios, but not impossible: power surge killing more than one drive, or even fire. Enterprise-level data backup planning always involves off site backup. Consumers may just use a cloud service.

    Now that people begin to use SSD for RAID, having more than one drive fail in the same period is more likely than mechanical drives. There are actually reports of this.
    Peter Lie
    LUMIN Firmware Lead

  19. #69

    Re: Lumin U2 Mini

    Quote Originally Posted by MichaelsMinute View Post
    Hi - not knocking your statement but I have a legit question for you (I used to work in data storage).

    Knowing there are different kinds of RAID, and knowing that some employ multiple disks in one enclosure making full auto duplicates of all data in real time (same exact data, two different HD's, one enclosure) so short of it being stolen you have a back up copy, how is RAID not an option?

    Again, not trying to argue, it's a legitimate question.
    RAID (with redundancy) is great to protect against a single drive failure. I have 4 NAS boxes and love them. However, I had one Synology volume crash and it was unrecoverable. If I didn't have a backup I would have lost all my data.
    Speakers: Vandersteen Model 7s, 4 M&K ST-150Ts, 1 VCC-5; Amplification: 2 Vandersteen M7-HPAs, CI Audio D200 MKII, Ayre V-6xe; Preamp: Doshi Audio Line Stage v3.0; Phono Pre: Doshi Audio Phono Pre; Analog: Wave Kinetics NVS with Durand Tosca arm; SME 3012R arm, Ortofon Diamond Anna; Reel to Reel: Technics RS-1500; Doshi Tape Pre-Amp; Studer A810, Studer A812, Tascam BR-20; Multi-channel: Bryston SP-3; Digital: Taiko Audio Extreme> Lampizator Horizon, Oppo UDP-203;

  20. #70
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    Re: Lumin U2 Mini

    Quote Originally Posted by wklie View Post
    These are low probability scenarios, but not impossible: power surge killing more than one drive, or even fire. Enterprise-level data backup planning always involves off site backup. Consumers may just use a cloud service.

    Now that people begin to use SSD for RAID, having more than one drive fail in the same period is more likely than mechanical drives. There are actually reports of this.
    Hi Peter - all true. We employed multiple off site backups throughout the US to account for weather disasters as well. I just meant that for a *reasonable* home set up of music and not nuclear secrets, RAID can certainly be a step in the right direction.

    I actually keep multiple hard drives of my files in multiple safes. But it is never as up to date as the RAID drive for obvious reasons.
    "We are all billionaires because of the huge piles sweet dough rolling in from our participation in the ongoing campaign to suck your collective brains through a stirrer-straw." - PTA Editorial Staff

  21. #71
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    Re: Lumin U2 Mini

    Quote Originally Posted by wklie View Post
    These are low probability scenarios, but not impossible: power surge killing more than one drive, or even fire. Enterprise-level data backup planning always involves off site backup. Consumers may just use a cloud service.
    Agree with Peter and dminches

    RAID is a great fault tolerant feature, but it’s not a substitute for storing a backup offsite.
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  22. #72
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    Re: Lumin U2 Mini

    Peter and others ... thanks a lot for your replies and guidance.

    In the last 24 hours, I've set out to learn some basics about computers, since I had no idea was x86 was. I was good with computers in 8th grade, but that was in 1980, the early era of Apple IIe computers, and, um, a lot has changed since then. [My dad, born in 1930, was a computer programmer and worked on massive mainframes in languages such as COBOL and FORTRAN and with memory-storage schemes such as punchcards and huge magnetic tape reels. I got into it for a while, but took a different path because, well, that's what kids do.]

    Anyway, after doing some reading and watching YouTube videos, I tried an experiment and would be interested in thoughts.

    At present, I am using a 2015 MacBook Air (4GB RAM) with MinimServer installed to run my music library off of an external 2TB USB drive. I've adjusted the settings so the computer does not go into sleep mode. It seems to be working just fine with my U2 Mini. This MacBook Air is a spare to a spare. In other words, it was two laptop computers ago. It was sitting there doing nothing, so I thought I'd put it into service.

    Any downside to doing this, at least for now? As I understand it, using a Mac as a streamer is not a good idea because the sound quality is sub-par (I can attest to that), but here I am using it as a server, right? So there should be no effect on sound quality? My music library is only 900 gigabytes, so it fits fine on a 2TB USB drive. [I have my music library backed up on two other USB drives and two very old Western Digital external hard drives. It's safe, unless there's a fire. I need a NAS to replace the Western Digital drives.]

    I tried getting this to work on a Mac Mini with an M1 chip, but I can't get MinimServer to open even after reading the instructions for installing Java on an M1 Mac, etc. I assume this is because there's no Intel inside?

    This got me thinking though ... would it be worth getting a cheap, old Mac Mini (with Intel and at least 4GB RAM) off eBay for $100 be a good move if I pair it with a 2TB USB drive containing my music library? That's cheaper than getting a NAS with at least 2GB RAM dedicated to music. I have a closet in my home office where my laser printer sits alongside the old Western Digital drives, all wired to ethernet, so that's where the old MacBook Air is set up and where an old Mac Mini could go.

    OK, back to the jazz I was listening to.

  23. #73
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    Re: Lumin U2 Mini

    If you have a wired network connection from the MacBook Air, or your MacBook WiFi connection is really stable and you don't have any streaming issue with it, then that's ok.

    For MinimServer on M1, please follow this to download the appropriate version of Java:

    Installing MinimWatch 2 on Mac

    If that still does not work and you really want it running on M1, please ask in MinimServer forum. I believe this is a solved issue and it really should work after some installation / configuration work.

    I stated x86 instead of ARM only because I thought you were interested to buy an ARM NAS. ARM in consumer grade NAS is a different thing from M1 - these are different ARM chips at the two different ends of performance spectrum. One is (I believe) low performance budget lower power processor below x86, while your M1 actually exceeds the performance in Celeron x86 NAS.

    With your library size you probably don't need to worry about RAM at this point.
    Peter Lie
    LUMIN Firmware Lead

  24. #74
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    Re: Lumin U2 Mini

    Quote Originally Posted by wklie View Post
    If you have a wired network connection from the MacBook Air, or your MacBook WiFi connection is really stable and you don't have any streaming issue with it, then that's ok.

    For MinimServer on M1, please follow this to download the appropriate version of Java:

    Installing MinimWatch 2 on Mac

    If that still does not work and you really want it running on M1, please ask in MinimServer forum. I believe this is a solved issue and it really should work after some installation / configuration work.

    I stated x86 instead of ARM only because I thought you were interested to buy an ARM NAS. ARM in consumer grade NAS is a different thing from M1 - these are different ARM chips at the two different ends of performance spectrum. One is (I believe) low performance budget lower power processor below x86, while your M1 actually exceeds the performance in Celeron x86 NAS.

    With your library size you probably don't need to worry about RAM at this point.
    Thanks so much for the guidance! I have a wired connection and it works very well in our 114-year-old house, thanks to the latest MoCA technology. (We renovated in 2010 and installed coax instead of ethernet, right before ethernet became a thing). Anything that can be hard-wired is hard-wired via ethernet/coax/MoCA.

    I'll keep troubleshooting the M1 and see where it leads. I do need an NAS eventually for work reasons more than audio reasons, but it would be nice to assign music-server responsibilities to the M1 Mac Mini if possible.

  25. #75

    Re: Lumin U2 Mini

    Quote Originally Posted by SteveInMinn View Post
    Any downside to doing this, at least for now? As I understand it, using a Mac as a streamer is not a good idea because the sound quality is sub-par (I can attest to that), but here I am using it as a server, right? So there should be no effect on sound quality?
    People have learned that everything matters when it comes to digital audio. The only question is, "how much?"

    NAS is not noiseless so what you have put together could be just as good. The only way to find out is to try other options and compare.
    Speakers: Vandersteen Model 7s, 4 M&K ST-150Ts, 1 VCC-5; Amplification: 2 Vandersteen M7-HPAs, CI Audio D200 MKII, Ayre V-6xe; Preamp: Doshi Audio Line Stage v3.0; Phono Pre: Doshi Audio Phono Pre; Analog: Wave Kinetics NVS with Durand Tosca arm; SME 3012R arm, Ortofon Diamond Anna; Reel to Reel: Technics RS-1500; Doshi Tape Pre-Amp; Studer A810, Studer A812, Tascam BR-20; Multi-channel: Bryston SP-3; Digital: Taiko Audio Extreme> Lampizator Horizon, Oppo UDP-203;

  26. #76
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    Re: Lumin U2 Mini

    Quote Originally Posted by dminches View Post
    People have learned that everything matters when it comes to digital audio. The only question is, "how much?"
    VERY true. I just did a test last night between mass-market ethernet switches and to my surprise noticed a difference.
    "We are all billionaires because of the huge piles sweet dough rolling in from our participation in the ongoing campaign to suck your collective brains through a stirrer-straw." - PTA Editorial Staff

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Sincerely,
The Audioshark.org Team

Lumin U2 Mini

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