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Thread: DCB1 unity gain pre-amp and spotfire interconnects - ongoing review

  1. #71
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 9,564
    I'm Oliver.

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    Quote Originally Posted by Jimbo View Post
    Dual mono sounds a good idea.
    It does tempt me but new transformer and another board to buy and populate puts me off a little.
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+/Allo Boss 1.2/Isolator 1.3 & Firebottle LPSU with Volumio & JRiver
    Amplification: Nelson Pass Derived DCB1 with Khozmo 48 Step Series Attenuator & Neurochrome Modulus 686 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

    Price List For SPOTFIRE Cables here:https://bit.ly/2Uxiv3j

    Alternative reading: http://www.audioaddictsforum.com

  2. #72
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 9,564
    I'm Oliver.

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    Quote Originally Posted by Macca View Post
    I agree Krell plus DCB1 is silly good.

    Also the advantage of a unity gain pre-amp with a digital source - no pointless gain stage to add distortion but none of the matching issues to the power amp that you can get with a passive pre.

    My only reservation with the DCB1 is the blue LED - need to upgrade that to one of the proper colours
    I've got some yellow ones. I like them lol
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+/Allo Boss 1.2/Isolator 1.3 & Firebottle LPSU with Volumio & JRiver
    Amplification: Nelson Pass Derived DCB1 with Khozmo 48 Step Series Attenuator & Neurochrome Modulus 686 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

    Price List For SPOTFIRE Cables here:https://bit.ly/2Uxiv3j

    Alternative reading: http://www.audioaddictsforum.com

  3. #73
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 26,227
    I'm Martin.

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    Yellow was what I was thinking, yellow or orange.
    Current Lash Up:

    *Sony SCD XB790QS* Nelson Pass DCB1 / Krell KSA100 mkII * JM Lab Electra 926 *


    'You fool! To think that your ape-brain could contain the full knowledge of the Krell!'

  4. #74
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 9,564
    I'm Oliver.

    Default

    Quote Originally Posted by Macca View Post
    Yellow was what I was thinking, yellow or orange.
    You can have a FREE led

    I paid 1.29 for 100 lol
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+/Allo Boss 1.2/Isolator 1.3 & Firebottle LPSU with Volumio & JRiver
    Amplification: Nelson Pass Derived DCB1 with Khozmo 48 Step Series Attenuator & Neurochrome Modulus 686 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

    Price List For SPOTFIRE Cables here:https://bit.ly/2Uxiv3j

    Alternative reading: http://www.audioaddictsforum.com

  5. #75
    Join Date: May 2017

    Location: West Sussex, UK

    Posts: 761
    I'm Steve.

    Default

    Quote Originally Posted by Jimbo View Post
    Dual mono sounds a good idea.
    Hi James

    The dual mono was just something i thought I'd try, seems to have worked but it's twice the cost as you have to fully stuff both boards

    Steve...
    Technics SP10 tt. Cart: At33ptg
    Project 2xperience sb dc
    Nelson Pass DCB1 pre
    Audio Research 75hd
    Aragon 4004 dual mono
    Monarchy Audio SM70
    CD Player: Cyrus cd8se
    Spotfire Speaker Cable
    Rogers Ls3/5a 15ohm
    Tannoy Eaton

  6. #76
    Join Date: Jan 2013

    Location: Birmingham

    Posts: 4,837
    I'm James.

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    Quote Originally Posted by STD305M View Post
    Hi James

    The dual mono was just something i thought I'd try, seems to have worked but it's twice the cost as you have to fully stuff both boards

    Steve...
    Hi Steve, How are you. Good stuff going on with the Dcb1. I heard Olis the other day into the amazing Krell KSA 100, I was so impressed I have been looking at Krell's this morning. Plenty about for around 1500-2000 so seem good value. Only problem is the SIZE!

    Going back to the Dcb1 - dual mono does sound a good choice as you will get excellent signal separation. Do you put this through a single Khozmo?
    VPI Scout 1.1 - Ortofon 2M Black FGS - Croft 25R+ - Croft Series 7 - Spendor SP2

  7. #77
    Join Date: May 2017

    Location: West Sussex, UK

    Posts: 761
    I'm Steve.

    Default

    Hi James

    You have the coice of one or two Khozmo.
    I personally chose 1 because both channels are separate
    No connection in any way
    The size of the Krell is an issue for me too as i live in a small adapted bungalow,but i will get one in somehow

    Steve..
    Technics SP10 tt. Cart: At33ptg
    Project 2xperience sb dc
    Nelson Pass DCB1 pre
    Audio Research 75hd
    Aragon 4004 dual mono
    Monarchy Audio SM70
    CD Player: Cyrus cd8se
    Spotfire Speaker Cable
    Rogers Ls3/5a 15ohm
    Tannoy Eaton

  8. #78
    Join Date: Jan 2013

    Location: Birmingham

    Posts: 4,837
    I'm James.

    Default

    Quote Originally Posted by STD305M View Post
    Hi James

    You have the coice of one or two Khozmo.
    I personally chose 1 because both channels are separate
    No connection in any way
    The size of the Krell is an issue for me too as i live in a small adapted bungalow,but i will get one in somehow

    Steve..
    Maybe a small extension!
    VPI Scout 1.1 - Ortofon 2M Black FGS - Croft 25R+ - Croft Series 7 - Spendor SP2

  9. #79
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 26,227
    I'm Martin.

    Default

    They're not that big! I live in a little 2 bed terrace and I managed to jam one in somehow. It won't fit in the equipment rack, but then you can't have everything.
    Current Lash Up:

    *Sony SCD XB790QS* Nelson Pass DCB1 / Krell KSA100 mkII * JM Lab Electra 926 *


    'You fool! To think that your ape-brain could contain the full knowledge of the Krell!'

  10. #80
    Join Date: Mar 2014

    Location: KY - Scotland

    Posts: 4,459
    I'm Mike.

    Default

    I'm tempted at trying the DCB1 in my system again. I had one before but to me it sounded a bit edgy when driven harder. It sounds like ( pardon the pun ), that this isn't an issue with the ones that I've seen you all build here.

    I subsequently found out that the board in the one I had wasn't the best so I'd be keen to try one again as I have a buyer for my Velleman valve pre amp so might be short of a pre soon lol.

    Does anyone have one I could borrow? I'll pay post both ways of course.

    If I liked it could someone build me one and if so how much would a finished one be?

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