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Thread: Glenn Croft is building amplifiers again! CroftAcoustics.co.uk

  1. #51
    Join Date: May 2008

    Location: A Strangely Isolated Place in Suffolk with Far Away Trains Passing By...

    Posts: 14,540
    I'm David.

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    I feel a bit of an alien posting on this thread but here goes...

    As I said on PFM, I owned a Series 4"PP" preamp back in the early nineties and very good it was too in sound. I DID get pee'd off with the volume contraols because this particular one mistracked badly at low levels (three o'clock on one and half three on the other for example) and I could never seem to get a satisfactory balance until the volume controls were over half way. I passed this example to a mate who had it stolen and a used replacement found by Tom (NAS) Fletcher wasn't as good sounding (dull and thick toned).

    Bringing things up to date, I read about what turned out to be a fellow PFMer's experiences with this model and he got in touch and sold his sample to me

    http://www.soton.ac.uk/~apm3/diyaudi...t_preamps.html

    Since acquiring it, Glenn suggested I remove the yellow caps added by the previous owner, removing the resistors across the line input sockets (but not the output ones) and replacing the two huge blue supply caps for Dubilier ones of under half the capacity. The mains filter has been lobotomised if not actually removed as yet and the line stage valves have been replaced with long plate Mullards. The sound is wonderful, if not quite as clear as the newer preamps he's done.

    As for the volume controls, as you can see, this era of preamp puts them at each end of the front panel - purely for styling as all the non phono wires are solid core and most run together down the left hand side of the case. Fortunately, the two pots fitted (500K ones it seems, not 1Meg as suggested) track quite well on this sample. By the way, no elastic band I've tried causes the two pots to move at the same rate! They ARE a pain to use, but if they are alongside each other, then I suspect it won't be a problem for most enthusiasts. I suggested the use of separate controls is more to do with component values and availabilty rather than a real problem with stereo controls per se. I mean the latest Alps pots (and I believe Noble too) have excellent low level tracking and are quite benign in performance I think....

    What you lot have totally missed IMO is that NOONE has any qualms about the expected performance of these new products, nor the proposed prices. The ONLY comments made have been about the use of two volume controls! Not bad at all for a little manufacturer is it?

  2. #52
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,522
    I'm AudioAl'sArbiterForPISHANTO.

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    Some nice info there, Dave

    It's interesting to see how the design has evolved over the years. There's just something so 'right' about Croft amps - they seem to get on with the job of reproducing music without fuss or fanfare, and most importantly, impose little of their own character on the music.

    What you lot have totally missed IMO is that NOONE has any qualms about the expected performance of these new products, nor the proposed prices. The ONLY comments made have been about the use of two volume controls! Not bad at all for a little manufacturer is it?
    Of course not, but come on, some of the comments I've read on PFM about wives supposedly having a hissy fit at the prospect of having two knobs to twiddle (lol), as I've highlighted, are bloody ridiculous.

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.

  3. #53
    Join Date: Feb 2008

    Location: North East UK

    Posts: 6,358
    I'm InSpace.

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    Even 'ye olde' stuff seems to be still popular!

    Look: http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA:IT&ih=009

    Plenty of bids there.
    Shian7
    --------------------------------------------------------

    Kudakutemo
    kudakutemo

    ari mizu-no tsuki

    Though it be be broken -
    broken again - still it's there:
    the moon on the water.

    - Choshu.

  4. #54
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,522
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Yep, and I just love the 'made during a spare 5 mins in the metalwork class' look. Retro is just *SO* cool!

    And I bet it still spanks the pants off of quite a few modern designs.

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.

  5. #55
    Join Date: Feb 2008

    Location: Boddam Aberdeenshire

    Posts: 272

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    I've used the same casework and knobs from Maplins myself All good stuff inside I'm sure!
    "Always carry a large flagon of whisky, in case of snake bite and, furthermore, always carry a small snake."


    Kevin

  6. #56
    Join Date: May 2008

    Location: A Strangely Isolated Place in Suffolk with Far Away Trains Passing By...

    Posts: 14,540
    I'm David.

    Default

    The interior of these early ones was just as well made as the later stuff. A few of us in our dealership took advantage of a nearby Croft dealer and bought some items over the years and of course we took the lids off and admired the point to point wiring etc inside.

    Great stuf, great man - and I'll forgive him the last non-regulated OTL I bought that blew line fuses with no warning and if not checked with a meter every half hour, you had a firework display inside.....

  7. #57
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,522
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Are you sure that wasn't one of Amar's 'modded' (and I use that term in the loosest possible sense) amps?

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.

  8. #58
    Join Date: Feb 2008

    Location: North Lincolnshire

    Posts: 76

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    Of course not, but c[ome on, some of the comments I've read on PFM about wives supposedly having a hissy fit at the prospect of having two knobs to twiddle (lol), as I've highlighted, are bloody ridiculous.

    Marco.
    Why? do you not think about the other people who may use the system when you are purchasing. I am looking around for a pre amp at the moment and one of these Crofts would probably have fitted the slot perfectly. NOT when you have to fark about with two volume controls every time you change source. My family have accepted valve amps as part of life from time to time, and the lack of a remote is neither here nor there, but given the level of components available I just do not see how or why you have to have two controls when one will do the same job. In the course of an evenings listening it is not unusual for all the sources to be used, and changed album by album, and to have to change two volumes, and hopefully balance them each time is to me geekery for the sake of it. I may not fit the profile of the average user of the forum, but I prefer a system that produces music, with a logical, and intuative control grouping.

    If the designer/manufacturer is convinced that he is going down the only route that is acceptable to him, then that is his choice, but he is shutting the door on a lot of potential sales. It could be that he is not bothered about the loss of sales, and assumes that he will have enough work from people who will accept his choice.
    sod the hi-fi, listen to the music

  9. #59
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,522
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Why? do you not think about the other people who may use the system when you are purchasing.
    Of course I do, Colin. Did you not read my post where I used an example of my wife buying a new cooker or washing machine and compared this to me buying a new preamp (with twin volume controls)? If not I'd scroll back and read it (page 5 post #41). Specifically this bit:

    The thing that I mainly find ridiculous though apart from the fact that someone would be daft enough to forgo owning a superb sounding preamp for the sake of its volume control arrangement is that people's wife’s are apparently so concerned about this issue. Surely there has to be some 'come and go' and mutual understanding in a relationship?

    I mean, if Del wants a new cooker or washing machine she picks what she wants and decides on the relevant facilities of the products she's buying because it's mainly her who will be using them. However on the occasions where I use those items (and it is fairly regularly) I wouldn't kick up a fuss if I had to press two more knobs on the cooker to heat up my pasta or on the washing machine to spin-dry my jeans! Of far more importance is that the new cooker and washing machine are more efficient and do their job better. Similarly, I wouldn't expect her to kick up a fuss if I bought a new preamp that used twin volume control knobs that was obviously far superior to what I had before - she would just get used to it as I would get used to using the new cooker or washing machine...
    I don't really see how that can sensibly be argued.

    Other than that you make some valid points

    What I would ask you is, say, if after hearing the Croft and being absolutely blown away by it, and it totally outperforming every other preamp on your audition list, would you then still not purchase it because of the twin volume controls?

    I know for a fact though that regardless of what people think on forums here or elsewhere, Glenn will have work coming out of his ears when he gets going

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.

  10. #60
    Join Date: May 2008

    Location: A Strangely Isolated Place in Suffolk with Far Away Trains Passing By...

    Posts: 14,540
    I'm David.

    Default

    Quote Originally Posted by Marco View Post
    Are you sure that wasn't one of Amar's 'modded' (and I use that term in the loosest possible sense) amps?

    Marco.
    This was in the days before Amar and Glenn subsquently went over to regulated power supplies, which I'm sure cured the problems I had with mine. The internal build was absolutely amazing - very simple wiring from point to point..

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