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Thread: Linear vs Switched mode PSU

  1. #111
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 70,618
    I'm AudioAl'sArbiterForPISHANTO.

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    Quote Originally Posted by Macca View Post
    More like the Marketing Department's wankathon.
    Agreed, yet it doesn't stop some folk even now obsessing over measured distortion in equipment design, almost to the exclusion of all else. That '70s mentality' is unfortunately still embedded today in the psyche of some designers and users alike, whilst they blissfully miss the bigger picture, which arguably in some ways is more important.

    Marco.
    "A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do". - Milan Kundera.

    "Your validity or worth are not defined or determined by the views of others with their own superimposed agendas". - Pharos (on AoS)

    My system:

    Modified Technics SL-1210MK5G/Mike New high-precision bearing & baseplate/Mike New ETP platter/Bruil record weight/Nagaoka GL602 crystal T/T mat. Paul Hynes SR7EHD PSU (plus regulator modules)/DCSXL pure-silver DC lead. Ortofon RS-212D tonearm/'Speedy Steve' custom-made Ebony armboard. Yannis Tome 423.5 Phono Silver-Litz tonearm cable, with Furutech CF-DIN(R) and Eichmann silver Bullet Plugs. Cartridges: Denon DL-S1 in AT MG-10 headshell with AT-6106 Quattro Hybrid lead-wire. Denon DL-103C1 in '103U' headshell with AT-609 silver lead-wire. Vintage Denon DL-103AU in AT-Ti15ANV Titanium Headshell. Shure M55E in Denon PCL-300 headshell with 6N silver lead-wire. Shure original USA SC35C. Audiocom-modified Sony X-777ES/DAS-R1 transport/DAC. Raspberry Pi-3 Model B and IQaudio Pi-DAC+/Paul Hynes SR3DR-05 linear PSU/Williams Audio NAS linear PSU. Heavily-modified Croft Charisma-X preamp. Stereo Coffee LDR. Head-amp: Paul Hynes design/SR5 PSU. Also modified Lentek. Tube Distinctions 50W Class A P/P Copper amp with cryo-treated Tung Sol KT150s. Speakers: 'Lockwood Majors', using 15" Tannoy Monitor Golds, modified with bespoke crossovers. Also Celestion Ditton 15XRs. Stands: Mana Acoustics (non-magnetic stainless steel 'clones’). Hi-Fi Racks Podium T/T wall shelf. Sony ST-5055L tuner. Cables: Furukawa EE/F-S 2mm & 2.6mm solid-core mains leads, fitted with Furutech FI-50 IECs and FI-1363Rs. Stereo interconnects: Sommer Carbokab 225 (with silver-plated MS Audio non-metallic POM RCAs). Speaker cable: VDH 'The Wind' Hybrid II. Digital coaxial cable: 1m Trompeter Electronics Triax TRC-75-2, with MS Audio ‘Starline' silver-plated RCAs. Mains block: Mark Grant 6-way, modded with Furutech FP-1363R sockets and Furukawa cable. Tube Distinctions digital noise filter. VPI HW 16.5 record cleaner.

  2. #112
    Join Date: Nov 2008

    Location: Rossendale

    Posts: 7,858
    I'm AMusicFanNotAnAudiophile.

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    Quote Originally Posted by Marco View Post
    Agreed, yet it doesn't stop some folk now obsessing over measured distortion in equipment design, almost to the exclusion of all else. That '70s mentality' is unfortunately still embedded today in the psyche of some designers and users alike, whilst they blissfully miss the bigger picture, which arguably in some ways is more important.

    Marco.
    Some of the best stuff I've heard is designed by folk who are rather obsessive about measurements, yet their offerings sound superb.
    It depends on what you're measuring and why.
    These same folk actually listen to what they're designing and building, and manage not to lose sight of the bigger picture.
    Chris

  3. #113
    Join Date: Nov 2011

    Location: Newcastle UK

    Posts: 3,619
    I'm Rich.

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    Sorry if I've missed it but did we establish a position on the Linear vs SMPS question?
    NEBO 8 - Sat 6th May 2017, St George Hotel, Durham Tees Valley Airport. 10am til late.

    See here for details: http://theartofsound.net/forum/showt...Airport/page20

  4. #114
    Join Date: Nov 2008

    Location: Rossendale

    Posts: 7,858
    I'm AMusicFanNotAnAudiophile.

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    Quote Originally Posted by RichB View Post
    Sorry if I've missed it but did we establish a position on the Linear vs SMPS question?
    Nope!
    Chris

  5. #115
    Join Date: Jul 2017

    Location: Crook, County Durham, UK

    Posts: 48
    I'm Christopher.

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    Quote Originally Posted by Stratmangler View Post
    Nope!
    Not without listening to them...

  6. #116
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 70,618
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    Quote Originally Posted by Stratmangler View Post
    Some of the best stuff I've heard is designed by folk who are rather obsessive about measurements, yet their offerings sound superb.
    It depends on what you're measuring and why.
    These same folk actually listen to what they're designing and building, and manage not to lose sight of the bigger picture.
    Lol, yes, as I know whom you're referring to, and completely agree! And that's largely because *ultimately* they trust their ears more than their test equipment

    However, I've also heard equipment (and complete systems) belonging to 'obsessive measurists' that I wouldn't give house room to, for all the reasons I've previously mentioned!

    Marco.
    "A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do". - Milan Kundera.

    "Your validity or worth are not defined or determined by the views of others with their own superimposed agendas". - Pharos (on AoS)

    My system:

    Modified Technics SL-1210MK5G/Mike New high-precision bearing & baseplate/Mike New ETP platter/Bruil record weight/Nagaoka GL602 crystal T/T mat. Paul Hynes SR7EHD PSU (plus regulator modules)/DCSXL pure-silver DC lead. Ortofon RS-212D tonearm/'Speedy Steve' custom-made Ebony armboard. Yannis Tome 423.5 Phono Silver-Litz tonearm cable, with Furutech CF-DIN(R) and Eichmann silver Bullet Plugs. Cartridges: Denon DL-S1 in AT MG-10 headshell with AT-6106 Quattro Hybrid lead-wire. Denon DL-103C1 in '103U' headshell with AT-609 silver lead-wire. Vintage Denon DL-103AU in AT-Ti15ANV Titanium Headshell. Shure M55E in Denon PCL-300 headshell with 6N silver lead-wire. Shure original USA SC35C. Audiocom-modified Sony X-777ES/DAS-R1 transport/DAC. Raspberry Pi-3 Model B and IQaudio Pi-DAC+/Paul Hynes SR3DR-05 linear PSU/Williams Audio NAS linear PSU. Heavily-modified Croft Charisma-X preamp. Stereo Coffee LDR. Head-amp: Paul Hynes design/SR5 PSU. Also modified Lentek. Tube Distinctions 50W Class A P/P Copper amp with cryo-treated Tung Sol KT150s. Speakers: 'Lockwood Majors', using 15" Tannoy Monitor Golds, modified with bespoke crossovers. Also Celestion Ditton 15XRs. Stands: Mana Acoustics (non-magnetic stainless steel 'clones’). Hi-Fi Racks Podium T/T wall shelf. Sony ST-5055L tuner. Cables: Furukawa EE/F-S 2mm & 2.6mm solid-core mains leads, fitted with Furutech FI-50 IECs and FI-1363Rs. Stereo interconnects: Sommer Carbokab 225 (with silver-plated MS Audio non-metallic POM RCAs). Speaker cable: VDH 'The Wind' Hybrid II. Digital coaxial cable: 1m Trompeter Electronics Triax TRC-75-2, with MS Audio ‘Starline' silver-plated RCAs. Mains block: Mark Grant 6-way, modded with Furutech FP-1363R sockets and Furukawa cable. Tube Distinctions digital noise filter. VPI HW 16.5 record cleaner.

  7. #117
    Join Date: Apr 2016

    Location: Bishops Stortford

    Posts: 389
    I'm Chris.

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    Well I've listened and I wouldn't let SMPS anywhere near my system.

  8. #118
    Join Date: Apr 2011

    Location: cheltenham

    Posts: 278
    I'm matt.

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    Quote Originally Posted by bumpy View Post
    Well I've listened and I wouldn't let SMPS anywhere near my system.
    That's a bit harsh

  9. #119
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,369
    I'm Jez.

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    Quote Originally Posted by bumpy View Post
    Well I've listened and I wouldn't let SMPS anywhere near my system.
    An over active imagination is something that unfortunately afflicts the majority of audiophiles...
    I will be showing in my mythbusters thread that ultimately much equipment needing an external supply is pretty much impervious to any effects from the PSU when properly designed. There will of course be some ifs and buts....
    I'd happily run everything in my system from external SMPS provided that the output from them was properly dealt with.

    The worst PSU's in hi fi are the ones you never hear anyone complaining about... because they've not been "told" there is something wrong with them in order to imagine that they can then hear a problem! I'm talking about the ones powering virtually every power amp
    Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)

    Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
    ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
    Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
    Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco

  10. #120
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 612
    I'm Andrew.

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    Quote Originally Posted by Macca View Post
    ... I think it was Hitachi who came up with a flagship power amp that supposedly measured 'perfectly'...
    I think you might be referring to a circuit that Hitachi published for their complementary power MOSFETs. Maplin used to sell a very popular power amp kit that used the Hitachi circuit and I made an amp with a pair of them many years ago. It was actually a very good amp but I've heard better since then.
    Quote Originally Posted by Stratmangler View Post
    It depends on what you're measuring and why.
    Yes, I agree. Power amp distortion is most often quoted at full - or nearly full - power output, but what about what's happening at the other end of the power spectrum? In my opinion that's more important.

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