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Thread: Recommend me a preamp please?

  1. #71
    Join Date: Oct 2012

    Location: NE England

    Posts: 3,638
    I'm Jez.

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    Quote Originally Posted by anthonyTD View Post
    Well,
    Your perfectly entitled to your opinion, the same as I am, but as on many occasions, your black and white attitude wont discourage me, and I will continue to put my point across, whether you agree with it or not.
    I wouldn't expect anything less Anthony! One of the great attractions to audio electronic engineering is that so little is actually 100% agreed on even by engineers and for all its seeming simplicity there is layer upon layer of technical subtlety to be unwrapped!
    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

  2. #72
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 68,480
    I'm AudioAl'sArbiterForPISHANTO.

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    Quote Originally Posted by Arkless Electronics View Post
    One of the great attractions to audio electronic engineering is that so little is actually 100% agreed on even by engineers and for all its seeming simplicity there is layer upon layer of technical subtlety to be unwrapped!
    Well, perhaps some of those technically subtle "unwrapped layers", yet to be examined, contain the answers to audio phenomena some of us experience (and can clearly hear), but which you currently can't measure, and thus automatically dismiss as "bollocks"!





    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.

    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. Modified Goldpoint SA4M-47 passive 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.

  3. #73
    Join Date: Feb 2008

    Location: South Wales

    Posts: 5,859
    I'm NotTakingLifeTooSeriouslyTheseDays.

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    Quote Originally Posted by Arkless Electronics View Post
    I wouldn't expect anything less Anthony! One of the great attractions to audio electronic engineering is that so little is actually 100% agreed on even by engineers and for all its seeming simplicity there is layer upon layer of technical subtlety to be unwrapped!
    "Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
    Nikola Tesla


  4. #74
    Join Date: Oct 2012

    Location: NE England

    Posts: 3,638
    I'm Jez.

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    Quote Originally Posted by Pharos View Post
    First of all I apologise Arkless Electronics and Rothwell Audio if my abbreviations have caused offence; that was not intended,and perhaps a bit lazy of me.

    In post 45 there seems on reflection to have been a divergence on the point being discussed.

    You went on to talk about clipping, a subject I was not considering. I was thinking about distortion originating within an amplifier quite other than clipping, perhaps giving the impression of greater dynamics.

    What I had in mind was the peculiar results I had with my old Nelson-Jones 10+10 on one particular track by Michael Hedges. Its effect was to somehow hype and increase the sense of attack of his guitar, and in a way I have never again heard on any other system. That may have been interpreted as sounding more dynamic.

    Regarding impedance match, the standard used in telecoms and in broadcasting was 600 ohms, this from transmission line theory, but it may have changed. It was based on maximum power transfer theory and avoidance of standing waves and reflections. I remember drawing the Gaussian graph of power transfer at college.
    We have 75 ohms for FM aerials.

    I remember at that time, about '75, arguing with my telecoms lecturer when we introduced audio amplifiers into the source/load matching discussion, saying that with audio amplifiers we are not interested in power transfer from source to load, but that we are interested in voltage transfer to load, which we want to maximise.

    I think your post 67 Rothwell Audio gives a very reasonable postulation, and it probably agrees with my 'Hedges experience'.

    Punctuation can improve communication and reduce ambiguity.
    No problem Dennis

    That's impedance matching yes. The now largely obsolete 600R was historically from "POTS" (plain old telephone system) and is also where we get the 0.775V 0VU standard from as it's 1mW into 600R. 75R is used in FM and TV as it's the centre impedance of a half wave dipole in free space. Mostly though 50R is used universally for RF.

    An audio amp is a voltage source, ie theoretically zero output resistance, and therefore non of the generated power is dissipated in the source and all we need is to minimise the resistance of the wiring between source and load, power into the load is then of course Vsq/Rload

    What you describe with the Nelson Jones (did you have the tuner as well?) has been commented upon several times over the years and could well be due to TID/TIM (a largely obsolete term these days and based on the work of Otala and Lohstro) causing a flurry of higher odd order distortion products on leading edges and hence enhancing the sense of attack... it's usually very fatiguing with longer exposure.
    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

  5. #75
    Join Date: Oct 2012

    Location: NE England

    Posts: 3,638
    I'm Jez.

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    Quote Originally Posted by Marco View Post
    Well, perhaps some of those technically subtle "unwrapped layers", yet to be examined, contain the answers to audio phenomena some of us experience (and can clearly hear), but which you currently can't measure, and thus automatically dismiss as "bollocks"!





    Marco.
    It's possible... As it's possible the Loch Ness monster will be caught and put on display
    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

  6. #76
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 68,480
    I'm AudioAl'sArbiterForPISHANTO.

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    Quote Originally Posted by Light Dependant Resistor View Post
    Very wrong, ignorant of many other forms of attenuation, and thus misleading !
    Sorry, Chris. Jez is normally pulled up for this, but the language there is too confrontational, and largely responsible for provoking the heated reaction that ensued.

    Please, and this applies to everyone, when challenging and/or addressing someone you think is wrong, use language unlikely to irk or cause offence to the person concerned, as you'll achieve nothing but start an argument, and most likely not of the constructive kind either.

    So, people, in future.........THINK before you type! Cheers

    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.

    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. Modified Goldpoint SA4M-47 passive 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. #77
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 68,480
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Quote Originally Posted by Arkless Electronics View Post
    It's possible... As it's possible the Loch Ness monster will be caught and put on display
    Or you banging an 18-year old blonde tonight!

    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.

    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. Modified Goldpoint SA4M-47 passive 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.

  8. #78
    Join Date: Sep 2013

    Location: North Island New Zealand

    Posts: 717
    I'm Chris.

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    Quote Originally Posted by Arkless Electronics View Post
    I wouldn't expect anything less Anthony! One of the great attractions to audio electronic engineering is that so little is actually 100% agreed on even by engineers and for all its seeming simplicity there is layer upon layer of technical subtlety to be unwrapped!
    You cannot as I see it have it both ways, in one post saying "there is layer upon layer of technical subtlety to be unwrapped "
    then a few minutes latter scoff at Marco's well thought out comment, by referring to technical subtlety and what remains to be discovered, as the Loch Ness Monster.

    Discovery is at the heart of every good electronics engineers methods, Mediocrity on the other hand is at the heart of those unwilling to face challenges to progress. Which do you see yourself as ?

  9. #79
    Join Date: Oct 2012

    Location: NE England

    Posts: 3,638
    I'm Jez.

    Default

    Quote Originally Posted by Marco View Post
    Or you banging an 18-year old blonde tonight!

    Marco.
    That is unfortunately true
    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. #80
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 15,823
    I'm Martin.

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    Quote Originally Posted by Light Dependant Resistor View Post
    You cannot as I see it have it both ways, in one post saying "there is layer upon layer of technical subtlety to be unwrapped "
    then a few minutes latter scoff at Marco's well thought out comment, by referring to technical subtlety and what remains to be discovered, as the Loch Ness Monster.

    Discovery is at the heart of every good electronics engineers methods, Mediocrity on the other hand is at the heart of those unwilling to face challenges to progress. Which do you see yourself as ?
    Chris that is confrontational in tone. This is how pointless slanging matches start instead of some interesting discussion.
    Martin



    Current Lash Up:

    Technics SL1200 with Sumiko h/s & Nagaoka MP50 * Firebottle valve MM phono stage * Parasound CDPi1000 * NVA P90SA passive pre / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *



    "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson

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