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  1. #191
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    Overall improvment ... Reduced price, around 60Ç and it exists only one 5V model. The hdplex tested was the 300 watts model. The SBT doesn't use competition voltage regulator, so, it seems logical to hear some effects with an optmized power supply.
    On a W4S recovery, it is more difficult to hear an effect with a ifi ipower.
    Squeezebox Touch with Audiophilleo And LMS 7.8.0, Nas Qnap TS-131 with LMS 7.9

  2. #192
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    Quote Originally Posted by r11bordo View Post
    Overall improvment ... Reduced price, around 60Ç and it exists only one 5V model. The hdplex tested was the 300 watts model. The SBT doesn't use competition voltage regulator, so, it seems logical to hear some effects with an optmized power supply.
    On a W4S recovery, it is more difficult to hear an effect with a ifi ipower.
    The interesting thing is that the ifi power supply does not appear to be a linear power supply. It has an input voltage range of 100V to 240V which is impossible for a linear supply.

    https://ifi-audio.com/portfolio-view/accessory-ipower/


    Sent from my SM-G900F using Tapatalk

  3. #193
    Senior Member Julf's Avatar
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    Quote Originally Posted by slartibartfast View Post
    The interesting thing is that the ifi power supply does not appear to be a linear power supply. It has an input voltage range of 100V to 240V which is impossible for a linear supply.
    Good point. They don't claim it is linear, and it would be hard to make a linear power supply that small.
    "To try to judge the real from the false will always be hard. In this fast-growing art of 'high fidelity' the quackery will bear a solid gilt edge that will fool many people" - Paul W Klipsch, 1953

  4. #194
    Senior Member Mnyb's Avatar
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    Quote Originally Posted by slartibartfast View Post
    The interesting thing is that the ifi power supply does not appear to be a linear power supply. It has an input voltage range of 100V to 240V which is impossible for a linear supply.

    https://ifi-audio.com/portfolio-view/accessory-ipower/


    Sent from my SM-G900F using Tapatalk
    That's actually refreshing. The belief that a certian design principle is always better is not good .

    This whole tread is based on a myth that linear is always better for everything.

    We can instead have good vs bad designs linier or switchmode .

    And also does it really matter much when the ps is actually working as it should given how the Touch is designed ( not so much )
    --------------------------------------------------------------------
    Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub.
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    (spares Touch, SB3, reciever ,controller )
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    http://people.xiph.org/~xiphmont/demo/neil-young.html

  5. #195
    Senior Member Jeff07971's Avatar
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    I like the caveat at the buttom of this spec !

    Name:  Audio-Band-Noise-Floor.png
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    Players: SliMP3,Squeezebox3 x3,Receiver,SqueezeLite-X,PiCorePlayer x3
    Server: LMS Version: Latest Nightly on Centos 7.5 VM on ESXi 6.5.0U2 on Dell T320
    Plugins: AutoRescan/BBCiPlayer/PowerSave/PowerSwitchIII/Squeezecloud/Spotty/Player Groups
    Remotes: iPeng9/Orangesqueeze/PC/Jivelite/SqueezeLite-X
    Music: 522GB,1660 albums with 23087 songs by 5204 artists mostly FLACs

    Want a webapp ? See http://forums.slimdevices.com/showth...Webapp-for-LMS

  6. #196
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    Quote Originally Posted by Jeff07971 View Post
    I like the caveat at the buttom of this spec !

    Name:  Audio-Band-Noise-Floor.png
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    I'm looking up-grade PS for my SBT, linear Power Supply (PS) was in my radar. But the good one (as informed in some forum) with >$300 price.
    After read this thread , I decided to buy iPower 5V before jump to $400 linear power supply

    Received iPower 5V last night, replaced the original SBT power supply.
    I can hear the different compare to OEM, more quite, vocal more clear and enjoyable. No impact to soundstage, still same.
    But I have to turn amp volume higher to have same level with OEM ps (suspected OEM deliver 3A and iPower only 2.5A)


    Not bad for $49 solution...
    So far I'm happy with this solution and save my money

    ~ron~

    Squeezebox Touch - Audiolab M-DAC- Single ended 300B Tube amp- Spendor 3/5S speaker

  7. #197
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    Very weird. It shouldn't be quieter unless it's utterly underpowered and the voltage drops through the floor under load. And I would wager the SBT processor and screen uses a heck of a lot more power than the audio output stage.


    Transcoded from Matt's brain by Tapatalk
    --
    Hardware: 3x Touch, 1x Radio, 2x Receivers, 1 HP Microserver NAS with Debian+LMS 7.9.0
    Music: ~1300 CDs, as 450 GB of 16/44k FLACs. No less than 3x 24/44k albums..

  8. #198
    Senior Member iPhone's Avatar
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    Quote Originally Posted by jazzwave View Post
    I'm looking up-grade PS for my SBT, linear Power Supply (PS) was in my radar. But the good one (as informed in some forum) with >$300 price.
    After read this thread , I decided to buy iPower 5V before jump to $400 linear power supply

    Received iPower 5V last night, replaced the original SBT power supply.
    I can hear the different compare to OEM, more quite, vocal more clear and enjoyable. No impact to soundstage, still same.
    But I have to turn amp volume higher to have same level with OEM ps (suspected OEM deliver 3A and iPower only 2.5A)


    Not bad for $49 solution...
    So far I'm happy with this solution and save my money

    ~ron~
    .
    April First has long passed so please don't post such incorrect rubbish based on your perception that your ears are somehow calibrated test equipment!
    Output volume is NOT affected one bit by excess current, it is neither louder or lower output. And since the 2.5 Amp is close enough to spec (especially for the analog op-amp section), you aren't hearing any differences whatsoever! More over, the SBT has multiple internal switching supplies inside the unit so changing the external power supply as ABSOLUTELY NO EFFECT on the Touch performance as long as said PS delivers the minimum required voltage and current while being designed to use with audio equipment (clean enough). The Touch is NOT an audio amplifier driving speakers where available excess PS current is used to aid dynamic headroom! The only way to even remotely improve the output specs of the SBT is to disable the internal switching power supplies and feed those circuits directly with the proper DC voltage from battery sources. I have accomplished this and measured the improvement with actual test equipment, it however is not even remotely worth the time and expense to do this when one can just feed a high end DAC for a much better result using the Touch only as a file transport! I would not have done it if Caleb hadn't sent me a box full of "beyond bothering to repair" Squeezebox units! Simple way to prove this is to buy a 6VDC battery and feed your Touch with it! Zero ripple, zero noise, zero feedback, zero hum, zero ground loop, nothing but perfectly clean power with all the reserve current one can image if you use a 6VDC 10Ah rechargeable battery! You will not hear any difference unless the actual AC power supply you are currently using is DEFECTIVE!
    Linear Power Supplies are a useless addition to a Touch as well as a waste of money with the SBT. No real improvement is possible (other then a slight improvement from using a battery as the external power source, especially if ones mains are really dirty with the switcher passing that onto the Touch).
    iPhone
    Media Room:
    ModWright Platinum Signature Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr 6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Wood Mains, VCC-5 Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide AutoScope 2.35:1, Vandersteen V2W Subwoofer

    Living Room:
    Transporter, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1

    Office: Touch with Vandersteen VSM-1s
    Kitchen: Touch in-wall mount w/ Thiel Powerpoint 1.2s
    Bedroom: Squeezebox BOOM
    Bathroom: Squeezebox Radio
    Around the House: SliMP3, SB1, SB2, SB3
    Ford Thunderbird: SB Touch, USB drive
    Ford Expedition: SB Touch, USB drive

  9. #199
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    @iPhone although you're technically correct, I'm not sure I see the benefit to start with an abrasive answer. It does not look like @jazzwave has been propagating some audiophile woo woo on this forum at all, so why not just (as you do in the second part of your post) explain him why his beliefs are incorrect? I'm not the police of this forum, needless to say but from time to time, for no good reason, it saddens me to see SB users (we are an endangered species) fighting for no reason, where education is what's needed.
    LMS 7.7, 7.8 and 7.9 - 5xRadio, 3xBoom, 4xDuet, 1xTouch, 1 SB2. Sonos PLAY:3, PLAY:5, Marantz NR1603, JBL OnBeat, XBoxOne, XBMC, Foobar2000, ShairPortW, JRiver 21, 2xChromecast Audio, Chromecast v1 and v2, , Pi B3, B2, Pi B+, 2xPi A+, Odroid-C1, Odroid-C2, Cubie2, Yamaha WX-010, AppleTV 4, Airport Express, GGMM E5

  10. #200
    Senior Member iPhone's Avatar
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    Quote Originally Posted by philippe_44 View Post
    @iPhone although you're technically correct, I'm not sure I see the benefit to start with an abrasive answer. It does not look like @jazzwave has been propagating some audiophile woo woo on this forum at all, so why not just (as you do in the second part of your post) explain him why his beliefs are incorrect? I'm not the police of this forum, needless to say but from time to time, for no good reason, it saddens me to see SB users (we are an endangered species) fighting for no reason, where education is what's needed.
    .
    Who is fighting? I didn't see any fighting in my post and as you said, just actual Facts! My post was educating the obvious uneducated. An END needs to be brought to the never ending reviving of the Linear Power Supply Myth (especially when the unit getting said $300 Linear PS has internal switching supplies after the external PS)! Yes power supplies are important, but only the uneducated idiot buys a $300 Power Supply for a Touch that only retailed for $299!

    Next is the silly premise that "it sounds better" with an out of spec PS, IE the "beholder" has magical calibrated ears but in reality actual has imagined everything to validate their actual lack of knowledge. Just exactly how does one go about attempting to "educate" somebody that can't apply knowledge and science because they depend on their perceived imagination? And of course, ones ears can easily discern certain things like the differences between listening to music from a 3 inch full range taped to a cardboard box versus a pair of home-brew three way speakers with poor cross-overs versus a pair of Vandersteen Model 7 speakers all being feed by Ayre Acoustics electronics! But when comparing ANY power supply against another with the Squeezebox Touch, no matter how great one's ears are, the only one that is going to actually sound different will be a defective power supply! There will be no increase or decrease in sound stage, no higher clearer highs, no deeper extended bass, IE no change whatsoever between in spec power supplies with the required minimum audio filtering!

    So how does one "educate" these individuals, I'm all ears (pun intended)!
    iPhone
    Media Room:
    ModWright Platinum Signature Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr 6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Wood Mains, VCC-5 Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide AutoScope 2.35:1, Vandersteen V2W Subwoofer

    Living Room:
    Transporter, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1

    Office: Touch with Vandersteen VSM-1s
    Kitchen: Touch in-wall mount w/ Thiel Powerpoint 1.2s
    Bedroom: Squeezebox BOOM
    Bathroom: Squeezebox Radio
    Around the House: SliMP3, SB1, SB2, SB3
    Ford Thunderbird: SB Touch, USB drive
    Ford Expedition: SB Touch, USB drive

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