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  1. #1
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    Momentum M400MxV

    I just heard about the upcoming rev of the M400 monoblock amplifiers.

    MOMENTUM M400MxV MONOBLOCK AMPLIFIER | Dan Dagostino amplifiers

    I was told it will be $10,000 a channel for an upgrade from M400 to M400MxV or $80,000 for a new pair outright.

    If this revision is anything like the original Momentum to M400, there goes our bank account as I will jump on it in a heartbeat. ;-)

    Thanks,
    Anthony

    Front End:
    MSB Reference DAC/MSB Reference Transport/Femto 33 Clock, Magnum Dynalab MD107T, Aiwa AD-F990
    Amplification: Dan D'Agostino Momentum HD Preamplifier & Momentum M400 Monoblocks, Crown XLS 2502 (x3) (subwoofers)
    Speakers: Scaena La Maitresse Ultime Loudspeaker System
    Cables: Shunyata Aeros Aurora-SP, Shunyata Aeros Aurora-IC, Jungson Golden Dragon
    Power: GigaWatt PC-4 EVO+, GigaWatt LS-2HCEVO, Jungson Pure Power, JPS Labs AC+, Transparent HPPC
    Miscellaneous: ​Bohmer/Legacy Audio Wavelet DSP/Room Correction

  2. #2
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    Re: Momentum M400MxV

    I would absolutely love the S250 MxV. I don't know the price but it's probably not cheap.
    Last edited by joeinid; November 18, 2021 at 08:49 PM.
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  3. #3
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    Re: Momentum M400MxV

    I wonder if they are keeping the M400 + S250 as is, or raising the price by 10 and 20k regardless?

    I luv my S250, I wonder what a S250 MxV would be like? not much room left in those chassis

    At least Dan D is giving existing owners the option of upgrading, rather than have to buy a brand new amp - Bravo for that
    Source: Technics SP10mk3 - Thales Simplicity II, TW Raven AC-3 - Graham Phantom, SME 3012-R, Exclusive P3,,Linn LP12 - Naim ARO
    Cartridges: Lyra Atlas Lambda SL, Lyra Etna SL, Lyra Delos, Dynavector XV-1s,Technics EPC100mk4, Ortofon A90, GM Royal, GM Classic, Denon ESC'd 103R, DL-S1, Audio Technica AT25, OC9II, Linn ESC'd Troika
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    Amps: conrad johnson teflon premier 8a's, D'Agostino Momentum S250
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  4. #4

    Re: Momentum M400MxV

    The description makes it sound like it's another massive overhaul like from M300 to M400. Not sure why there's a big black stripe across the front, the design was perfect on the M400. Famous last words, but not sure how the MxV will be that much better than the M400 to justify the $20k upgrade cost
    EMM Labs TX2 SE|DA2 V2| Ayre KX-R Twenty | D'Agostino Momentum M400 | Focal Maestro Utopia III | MIT Oracle MA | VH Audio | Shunyata King Cobra CX | Shunyata Everest | Harmonic Resolution Systems | CAD Ground Control

  5. #5
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    Re: Momentum M400MxV

    Quote Originally Posted by XV-1 View Post
    I wonder if they are keeping the M400 + S250 as is, or raising the price by 10 and 20k regardless?

    I luv my S250, I wonder what a S250 MxV would be like? not much room left in those chassis

    At least Dan D is giving existing owners the option of upgrading, rather than have to buy a brand new amp - Bravo for that
    Definately agree with your statement and am looking forward to this upgrade for my stereo as well
    dCS Bartok with clock, Esoteric K05x, G-02x, D’Agostino Momentum Stereo, TAD ME-1
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  6. #6
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    Re: Momentum M400MxV

    As the M400 has been out for a few years now, I am glad to hear the upgrade features trickling down from the much more expensive Relentless series.

    Dan’s M400 is on my short list for my future upgrade. Regarding to the black stripe across the front, this may be just a light reflection in the picture. This same black stripe also appears in the existing M400 user manual’s.
    Speakers: Wilson Audio Alexia 2 | Digital Sources: Esoteric K01XD + Cybershaft OP18 + Modified OPPO 205 | Amplification: Pass Labs XP-32 + Dan D'Agostino M400 | Analog cables: Transparent Reference XL | Digital cables: Kimber KS2020

  7. #7
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    Re: Momentum M400MxV

    My dealer said they are getting in a S250 MxV so hopefully I will be able to compare to my S250.
    Source: Technics SP10mk3 - Thales Simplicity II, TW Raven AC-3 - Graham Phantom, SME 3012-R, Exclusive P3,,Linn LP12 - Naim ARO
    Cartridges: Lyra Atlas Lambda SL, Lyra Etna SL, Lyra Delos, Dynavector XV-1s,Technics EPC100mk4, Ortofon A90, GM Royal, GM Classic, Denon ESC'd 103R, DL-S1, Audio Technica AT25, OC9II, Linn ESC'd Troika
    Phono Stage: Accuphase C-37,TW Acustik phono
    EQ: ​DEQX HDP-4
    Preamp: D'Agostino HD, conrad johnson GAT,
    Amps: conrad johnson teflon premier 8a's, D'Agostino Momentum S250
    Speakers: Wilson Maxx3

  8. #8
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    Re: Momentum M400MxV

    I was expecting this. I wonder if the process will be the same as with the Momentum 400's. They filled the pipeline with new product before beginning the upgrade process. Last time in lieu of updating my original M300's I went with new M400's since there was a small design change I liked. This time I might just update my units as the exterior remains the same.
    Jim

    D'Agostino Momentum M-400's & HD Pre-amp
    Wilson Alexandria X2 Series 2 speakers
    Digital: dCS Vivaldi DAC, Clock & Upsampler
    Analog: SME 20/3 with Esoteric E-03 Phono
    Transparent Opus Speaker Cable & Interconnects & Opus Power Cords
    Power Cords on Digital: Shunyata
    Power Conditioner - Shunyata Everest

  9. #9
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    Re: Momentum M400MxV

    Quote Originally Posted by XV-1 View Post
    My dealer said they are getting in a S250 MxV so hopefully I will be able to compare to my S250.
    Please kindly share your comparison with us at your convenience... will be looking forward to it thanks
    dCS Bartok with clock, Esoteric K05x, G-02x, D’Agostino Momentum Stereo, TAD ME-1
    Acrolink Mexcel, Cardas Beyond XL, Shunyata Everest & Denali 2000T
    SOtM sNH10G extreme x2 clocked, Tripoint Troy, ISO Acoustic

  10. #10

    Re: Momentum M400MxV

    Quote Originally Posted by jlchen View Post
    Regarding to the black stripe across the front, this may be just a light reflection in the picture.
    You're right, it's been there since the M300 (maybe an attempt to show curvature?) so it doesn't look like there is any exterior design change.
    EMM Labs TX2 SE|DA2 V2| Ayre KX-R Twenty | D'Agostino Momentum M400 | Focal Maestro Utopia III | MIT Oracle MA | VH Audio | Shunyata King Cobra CX | Shunyata Everest | Harmonic Resolution Systems | CAD Ground Control

  11. #11
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    Re: Momentum M400MxV

    Just took delivery of our first pair of Dan D'Agostino amplifiers - M400. Definitely will want to upgade to MxV at a later time.


    Speakers: Wilson Audio Alexia 2 | Digital Sources: Esoteric K01XD + Cybershaft OP18 + Modified OPPO 205 | Amplification: Pass Labs XP-32 + Dan D'Agostino M400 | Analog cables: Transparent Reference XL | Digital cables: Kimber KS2020

  12. #12

    Re: Momentum M400MxV

    edited
    Last edited by exupgh12; January 17, 2022 at 05:28 AM. Reason: none relevant comment

  13. #13
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    Re: Momentum M400MxV

    Has anyone done the upgrades on their M400's or S250's?
    Source: Technics SP10mk3 - Thales Simplicity II, TW Raven AC-3 - Graham Phantom, SME 3012-R, Exclusive P3,,Linn LP12 - Naim ARO
    Cartridges: Lyra Atlas Lambda SL, Lyra Etna SL, Lyra Delos, Dynavector XV-1s,Technics EPC100mk4, Ortofon A90, GM Royal, GM Classic, Denon ESC'd 103R, DL-S1, Audio Technica AT25, OC9II, Linn ESC'd Troika
    Phono Stage: Accuphase C-37,TW Acustik phono
    EQ: ​DEQX HDP-4
    Preamp: D'Agostino HD, conrad johnson GAT,
    Amps: conrad johnson teflon premier 8a's, D'Agostino Momentum S250
    Speakers: Wilson Maxx3

  14. #14
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    Re: Momentum M400MxV

    Quote Originally Posted by XV-1 View Post
    Has anyone done the upgrades on their M400's or S250's?
    I haven't yet. I am waiting to hear the upgrade before pulling the trigger.
    Jim

    D'Agostino Momentum M-400's & HD Pre-amp
    Wilson Alexandria X2 Series 2 speakers
    Digital: dCS Vivaldi DAC, Clock & Upsampler
    Analog: SME 20/3 with Esoteric E-03 Phono
    Transparent Opus Speaker Cable & Interconnects & Opus Power Cords
    Power Cords on Digital: Shunyata
    Power Conditioner - Shunyata Everest

  15. #15
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    Re: Momentum M400MxV

    Quote Originally Posted by XV-1 View Post
    Has anyone done the upgrades on their M400's or S250's?
    We comitted to the upgrade without hearing it since Dan has always come through for us in the past and we just loved the last upgrade. We have been on the list since mid-November, but have yet to hear form our dealer as to exactly when we need to send our units in.

    Thanks.
    Anthony

    Front End:
    MSB Reference DAC/MSB Reference Transport/Femto 33 Clock, Magnum Dynalab MD107T, Aiwa AD-F990
    Amplification: Dan D'Agostino Momentum HD Preamplifier & Momentum M400 Monoblocks, Crown XLS 2502 (x3) (subwoofers)
    Speakers: Scaena La Maitresse Ultime Loudspeaker System
    Cables: Shunyata Aeros Aurora-SP, Shunyata Aeros Aurora-IC, Jungson Golden Dragon
    Power: GigaWatt PC-4 EVO+, GigaWatt LS-2HCEVO, Jungson Pure Power, JPS Labs AC+, Transparent HPPC
    Miscellaneous: ​Bohmer/Legacy Audio Wavelet DSP/Room Correction

  16. #16
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    Re: Momentum M400MxV

    I’m sure it sounds awesome.

  17. #17
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    Re: Momentum M400MxV

    The local D'Agostino dealer just took away our M400 Momentums to be upgraded to the MxV version.

    While it stinks to be without them for 4 weeks (2 weeks ship/back forth, two weeks at D'Agostino to rev them), I think it will take that long for my body to recover from pulling them from the system, moving them out of the house, and boxing them up. ;-)

    Anyway, it appears that upgrades are starting to go through the system.
    Anthony

    Front End:
    MSB Reference DAC/MSB Reference Transport/Femto 33 Clock, Magnum Dynalab MD107T, Aiwa AD-F990
    Amplification: Dan D'Agostino Momentum HD Preamplifier & Momentum M400 Monoblocks, Crown XLS 2502 (x3) (subwoofers)
    Speakers: Scaena La Maitresse Ultime Loudspeaker System
    Cables: Shunyata Aeros Aurora-SP, Shunyata Aeros Aurora-IC, Jungson Golden Dragon
    Power: GigaWatt PC-4 EVO+, GigaWatt LS-2HCEVO, Jungson Pure Power, JPS Labs AC+, Transparent HPPC
    Miscellaneous: ​Bohmer/Legacy Audio Wavelet DSP/Room Correction

  18. #18
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    Re: Momentum M400MxV

    Congratulations. I am still on the fence, but I bet they will sound great.
    Jim

    D'Agostino Momentum M-400's & HD Pre-amp
    Wilson Alexandria X2 Series 2 speakers
    Digital: dCS Vivaldi DAC, Clock & Upsampler
    Analog: SME 20/3 with Esoteric E-03 Phono
    Transparent Opus Speaker Cable & Interconnects & Opus Power Cords
    Power Cords on Digital: Shunyata
    Power Conditioner - Shunyata Everest

  19. #19
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    Re: Momentum M400MxV

    Patience for the delight of what’s to come. I upgraded my previous Momentum Pre to HD and Power Amp to S250. Both upgrades were stupendous.
    _______________

    Mike

    Amplification: MBL 6010D, MBL 9008A Monos
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  20. #20
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    Re: Momentum M400MxV

    Congratulations! Please let us know the sound differences when they come back!
    Speakers: Wilson Audio Alexia 2 | Digital Sources: Esoteric K01XD + Cybershaft OP18 + Modified OPPO 205 | Amplification: Pass Labs XP-32 + Dan D'Agostino M400 | Analog cables: Transparent Reference XL | Digital cables: Kimber KS2020

  21. #21

    Re: Momentum M400MxV

    So has anyone got their upgraded amps back yet? Mine are due to go back shortly and was wondering what level of improvement has been noticed.
    Thanks
    Marc.

  22. #22
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    Re: Momentum M400MxV

    Marc,

    I am sitting four weeks to the day since they were picked up to be shipped to D'Agostino and I have yet to get them returned.

    Thanks,
    Anthony

    Front End:
    MSB Reference DAC/MSB Reference Transport/Femto 33 Clock, Magnum Dynalab MD107T, Aiwa AD-F990
    Amplification: Dan D'Agostino Momentum HD Preamplifier & Momentum M400 Monoblocks, Crown XLS 2502 (x3) (subwoofers)
    Speakers: Scaena La Maitresse Ultime Loudspeaker System
    Cables: Shunyata Aeros Aurora-SP, Shunyata Aeros Aurora-IC, Jungson Golden Dragon
    Power: GigaWatt PC-4 EVO+, GigaWatt LS-2HCEVO, Jungson Pure Power, JPS Labs AC+, Transparent HPPC
    Miscellaneous: ​Bohmer/Legacy Audio Wavelet DSP/Room Correction

  23. #23
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    Re: Momentum M400MxV

    If I’d paid that kind of money for something I would be none too happy with that level of service.

    Why can’t they organize better and just say, “ok we’re ready for your amp in <1 week, please ship now” and have them turned around in a day or 2?

    Then you’re not without very expensive hard-to-substitute gear for very lengthy periods.
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  24. #24
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    Re: Momentum M400MxV

    Quote Originally Posted by jmusica View Post
    If I’d paid that kind of money for something I would be none too happy with that level of service.

    Why can’t they organize better and just say, “ok we’re ready for your amp in <1 week, please ship now” and have them turned around in a day or 2?

    Then you’re not without very expensive hard-to-substitute gear for very lengthy periods.
    In fairness to D'Agostino I was told it would be about 4 weeks (2 weeks at the factory, 1 week shipping to, and 1 week shipping from), so I am not unhappy at this point. Furthermore, I have had issues with the local dealer picking up the equipment from me in the past and sitting on it instead of immediately shipping it, so who knows how long the dealer sat on the units this time (regardless of them promising to ship it out immediately)? D'Agostino can't work on it if they don't get it in a timely fashion.

    I do get your meaning, but over many years now I have always been taken care of with honesty and diligence by the D'Agostino team, so I am fine with their effort. Actually, I have nothing but good things to say about all the interactions I have had with them as they are truly professional folks.

    Thank you for your thoughts though.
    Anthony

    Front End:
    MSB Reference DAC/MSB Reference Transport/Femto 33 Clock, Magnum Dynalab MD107T, Aiwa AD-F990
    Amplification: Dan D'Agostino Momentum HD Preamplifier & Momentum M400 Monoblocks, Crown XLS 2502 (x3) (subwoofers)
    Speakers: Scaena La Maitresse Ultime Loudspeaker System
    Cables: Shunyata Aeros Aurora-SP, Shunyata Aeros Aurora-IC, Jungson Golden Dragon
    Power: GigaWatt PC-4 EVO+, GigaWatt LS-2HCEVO, Jungson Pure Power, JPS Labs AC+, Transparent HPPC
    Miscellaneous: ​Bohmer/Legacy Audio Wavelet DSP/Room Correction

  25. #25
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    Re: Momentum M400MxV

    @layne I think you're a more patient person than me!

    But yeah, if the 4 weeks includes shipping both ways, that's not nearly as bad. I still would question 2 weeks at the factory, for what is likely at most a couple hours work per unit, plus a couple days burn-in/measurement (unless that bit takes longer).

    Guess I shouldn't have given the impression I was impugning their service in general - just questioning the organizing around this process. I may be in a similar position soon for an upgrade on my amp. But I won't do it unless I can be sure I won't be without it that long as I have no back-up component.
    Lumin X1 | Enleum 23r | Scansonic MB3.5 B
    Wireworld Platinum Eclipse 8 ICs | Wireworld Platinum Starlight 8 Ethernet (L1->X1)
    Genesis Big XLR signal cable
    Zu IBIS speaker cable
    Ayre L-x5e Line Filter | Shunyata Alpha ZiTron Digital, Transparent Premium Powerlink MM2 PCs | Keces P3 LPS
    Lumin L1 NAS | Qobuz

    Tweaks: Artesania Audio damper | Shakti Air | Shakti Onlines | Synergistic Big MIG footers | Alto-extremo Lyd footers | carbon fiber shelf | Herbie's Soft Fat Dots

  26. #26

    Re: Momentum M400MxV

    Quote Originally Posted by laynesaddiction View Post
    Marc,

    I am sitting four weeks to the day since they were picked up to be shipped to D'Agostino and I have yet to get them returned.

    Thanks,
    So I was told about the same time when they have been picked up although may be longer since need to ship from the UK.

    Hopefully yours will be back soon. Please let me know your thoughts when they are back in place. I’m assuming they will need to be run in again. Be good to find out if that is the case.

    Thanks
    Marc.

  27. #27
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    Re: Momentum M400MxV

    I am sure the wait will be worth it. for the upgrade price, you would want Dag to do everything perfectly and in their own good time.
    Source: Technics SP10mk3 - Thales Simplicity II, TW Raven AC-3 - Graham Phantom, SME 3012-R, Exclusive P3,,Linn LP12 - Naim ARO
    Cartridges: Lyra Atlas Lambda SL, Lyra Etna SL, Lyra Delos, Dynavector XV-1s,Technics EPC100mk4, Ortofon A90, GM Royal, GM Classic, Denon ESC'd 103R, DL-S1, Audio Technica AT25, OC9II, Linn ESC'd Troika
    Phono Stage: Accuphase C-37,TW Acustik phono
    EQ: ​DEQX HDP-4
    Preamp: D'Agostino HD, conrad johnson GAT,
    Amps: conrad johnson teflon premier 8a's, D'Agostino Momentum S250
    Speakers: Wilson Maxx3

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