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Vintage audio integrations and upgrades

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  • Carver M-1.0t mkII opt002 Restore and Upgrade

       (3 reviews)

    We proudly present the official M1.0t mkII opt002 upgrade!

    This mod gives your 1.0t a much higher power rating, more headroom, less commutation distortion, better current sourcing and performance into low impedance loads, and tighter bass and transient control. This mod includes replacement of all consumable parts, reflow of questionable solder, the thump fix, all service bulletins, new 5-way binding posts, cleaning inside and out. Amp is burnt-in and thoroughly tested against factory specs, and upgraded specs.

    This mod has been performed by Richard Pecoraro and Greg Garska of carvermk2.com for years (since 2008) and has proven to be one of the most powerful, musical, and reliable Carver amps around. Do not trust Ebay copycat 'techs' - we are the only authorized techs that perform this sophisticated upgrade and stand behind it. All the services, kits and retro-fit boards found on Ebay were stolen and used without permission. For all of the work and improvements done, this is by far one of the best deals in the industry.

    Includes a 3-year warranty and lifetime waiver of bench fees.


    Carver M-1.0t mk II specifications


      Stock   Mk II   opt 002
    8 ohms 200 watts <0.15% THD   400 watts <0.15% THD   460 watts < 0.15% THD
    4 ohms 400 watts <0.15% THD   450 watts <0.15% THD   510 watts < 0.15% THD
    At Clipping      
    8 ohms 350 watts   450 watts   500 watts
    4 ohms 500 watts   520 watts   555 watts
    8 ohms 550 watts   670 watts   700 watts
    4 ohms 832 watts   940 watts 1000 watts
    2 ohms 928 watts 1250 watts 1290 watts


    New FulcrumTM bias pivot

    The original bias network (black) allows the bias point to drift as temperature increases.  Addition of a complimentary transistor and network (red) counteracts this drift, and maintains the bias set point.  As a result, heatsink temperatures are reduced by 10 degrees F.



    M-1.0t MARK II Manual Addendum

    The M-1.0t has to be one of the most under-rated amplifiers of all time. It's rumored that this was done to fit the m-1.0t in the model line (0.5, 1.0, 1.5 and 4.0). It's also suggested that it was rated at 200W to match the Conrad Johnson Premier V rating (the $12,000 tube amplifier it was transfer function modified to sound like).

    This is the amp that won the famous Stereophile Magazine Carver Amp challenge.



    All new electrolytic capacitors replaced and upgraded, including new High Voltage, Long Life power supply capacitors

    All pre-driver stage transistors replaced and upgraded

    All rectifiers replaced and upgraded

    All Main switching Diodes replaced

    'Trouble' resistors replaced and upgraded where needed

    Output transistor parallel doubled for high current handling (opt002 only)

    High current output commutators installed (opt002 only)

    Bias Pivot upgrade

    On/Off Thump Fix circuits installed

    Solder joints reflowed and inspected.

    Premium Quality 7% silver solder used on output stage

    5-way gold speaker binding posts

    Unit cleaned inside and out

    All needed repairs are included*





    Professionally made retro-fit boards:

    (Opt002 board - designed for high current capacity)



    (High Rail capacitor board. Unlike the hobbyist PCB that lays flat against the PCB on Ebay, this board does not interfere with the sensitive components on the main PCB and keeps the capacitors elevated for much better thermal cycling and electrical isolation. This board option also reduces the over-all noisefloor of the amplifier.)



    (Thump fix board. Designed with hi-tech components on a sleek unobstursive PCB)



    (Bias Pivot PCB designed for maximum thermal reliance.)



    New Speaker Binding Posts:



    IEC socket option:



    Cost: $450.00 + shipping

    Add the optional LED upgrade with your choice of color for an additional: $40.00

    Add an IEC (C14) socket for an additional: $40



    Email us at SERVICE@NELIONAUDIO.COM to schedule an appointment today!

    (no obligation)



    (*Unusual damage such as cracked circuit boards, burns, excessive corrosion and other extremes are not covered. If you are not sure of the extent of the damage, please send pictures for evaluation. Cosmetic damage is also not part of 'repairs'. We clean and polish the units as best we can, but we do not restore paint, correct scratches, remove stains or reform dents. Please see Restoral Services for more information on cosmetics.)

    • Like 2

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    Hammy Technoid

       7 of 7 members found this review helpful 7 / 7 members

    Hi Nelion Audio,
     My recently modified/ upgraded Carver M1.0t has arrived and I've listened, and I am very pleased with its performance. Thank you for packing it so well. It's a long trip from Alaska to Michigan and back. The IEC power socket is a big plus. I'm glad I chose that option, along with the Mark II and the opt002. I'm still listening to the amp and it reveals itself as a magnificent piece of gear. I'm hoping to get many many more years of use from the amp. I give you a 5 star rating because your expertise has taken this amp to a new level. Thank You very very much.



    • Like 1
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       5 of 5 members found this review helpful 5 / 5 members

    Hi Nelion Audio,

    I recently became nostalgic for my Carver amps and was quite happy to see that there are other people that care about them. This restoration and upgrade is impressive.


    • Like 1
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    I can’t say how much I have enjoyed this upgrade in my system. I had the MK to option 002 done to my 1.0 T and it has been everything it said it would be and more it was done about 5 to 6 years ago I believe and it has been nothing but a joy to listen to. I have a lot of people who say Rob I’ve got this music and I’d like to hear it on your system because they know it’s a serious system and they want to see what the potential is. I can’t think of anything I’ve done to my system that was as impactful as this investment in the upgrade. I would like to thank you so much for your craftsmanship. Rob 

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