FS: Musical Paradise MP301 mk3

Discussion in 'Closed (Archived) Sales' started by bobboxbody, Jan 12, 2021.

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  1. bobboxbody

    bobboxbody Friend

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    I really like this one, but it's still in production and I would enjoy doing all the mods again, so it must go to make room for the new. I don't know if this will be popular here, I enjoyed it more with my single driver speakers than with headphones, but it's a great desktop speaker amp in my opinion.

    Website specs:
    Class A single ended 6.5W x 2 to speakers and 2W x 2 to the headphone out.
    It also says headphone output impedance is 32-600 ohm but I don't think that's true, I'm guessing they mean recommended headphone impedance. It does better with high impedance cans than low.

    I did a bunch of mods outlined in this thread on CAM:
    https://www.canuckaudiomart.com/forum/viewtopic.php?f=23&t=45210&start=30

    Filter capacitor bank was increased from 360 to 780uf
    Driver tube cathode bypass capacitors were replaced with Panasonic organic polymers and bypassed with films. The associated resistors were changed to slightly lower gain and stop overdriving the power tubes.
    Coupling caps were replaced with Obligato Golds.
    Small capacitor and resistor added to the main grounding point to reduce hum.
    I think a couple of other minor things that I don't remember and can't find my Mouser invoice to look at the parts list.

    The point of all of these was to add more bass heft and better dynamics, which they did, but it's much more apparent on speakers than on headphones. The stock amp had a very classic wet smooth tube sound, it now has better frequency extension and greatly improved dynamics, however it still sounds a bit compressed/overly smooth on Auteur.

    Power tubes included will be new production Tung-Sol 7581A(my favorites, about 200 hours on them) and GT EL34 with unknown life, they came from the previous owner and I only verified that they work.
    Driver tubes are all NOS military 6SJ7's, 1 pair metal envelope RCA JAN CRC-6SJ7, 1 pair Tung-Sol VT-116A, and 1 pair Sylvania JAN 6SJ7WGT.
    The RCA's are the most tubey sounding, Sylvania and Tung-Sol add a bit more HF and dynamic emphasis. The Tung-Sol's are my favorite, but it is probably just because they're the best looking.

    This will ship in the original packing, so it should be very secure.

    Looking for $325 net to me for Friends and known Contributors only please. If there's no interest here I'll move it to head-fi for more $$.

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  2. bobboxbody

    bobboxbody Friend

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