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Muzishare X7 - an affordable hand-wired KT88 integrated made at the Line Magnetic factory

Discussion in 'Audio Hardware' started by action pact, Dec 10, 2020.

  1. gareth davies

    gareth davies New Member

    Location:
    uk
    Hi
    A good few hours more and it has improved markedly, Im really surprised i have been serial buyer swapper of HI Fi for many years and never heard a piece of equipment change like this. I have always though running in an amp to be a bit of a myth but this has completely changed my thoughts on this
     
    Andy Saunders and action pact like this.
  2. Ruckus

    Ruckus Active Member

    Location:
    Illinois
    Mine changed for better after around 100 hours. I have Klipsch hereseys speakers and they were never better. I did change out the preamp tube to a jj and got even more bass response. It still takes around an hour to open up though.
    I find myself opting for better recordings when playing lps or cds, though a rough oldie still gets played occasionally.:cool:
     
  3. Ruckus

    Ruckus Active Member

    Location:
    Illinois
    Did the Kt88s help? Considering them myself.
     
  4. action pact

    action pact Music Omnivore Thread Starter

    I think they made an improvement, but not nearly as much as upgrading the 12au7/12ax7 tubes.
     
    WhatDoIKnow likes this.
  5. E M Long

    E M Long New Member

    Location:
    Fayetteville, AR
    I have owned the X7 for a year or so and done a fair amount of tube rolling. This has been my first tube amp experience. Amp is paired with Cornwall 4 speakers. I gradually realized that spending money on quality tubes was worth it. The ax7 tube is a GE from the 1950’s. The 12 au7’s are matched amperex bugle boys from the 50’s. The most important tube was the 5ar4 gz34 metal base Mullard
    /Amperex rectifier from 1955. These are routinely priced between 400-500 dollars but made a big difference in sound quality. (Query “dubstep girl + 5ar4 review”)
    The 88’s are Gold Lions which could probably be improved upon with vintage versions, but it would cost a lot.
    This all just to say that the essential quality of the amp justifies spending money on premium NOS tubes.
    One last thing - this amp prefers the 4 ohm speaker connection which greatly improves smoothness on the Cornwall 4’s.
    I Also use the Audiodharma Cable Cooker which I consider my most important accessory. If you get into cable and connector rolling, no new cable can be truly judged until it has been “cooked.” Not snake oil.

    Cornwall 4 speakers
    Jay’s Audio CDT2 MK3 Transport
    Denafrips Terminator Dac
    Rotel RC 1590 pre amp
    Shunyata power conditioning.
     
  6. knob twirler

    knob twirler Forum Resident

    Location:
    Cleveland, Ohio
    I had a tube go bad, killed the left channel. Assuming it’s my kt88s, since I’m still using the chinese ones which came with the x7, should I go with new Red Lions or Mullards? My preamp tubes and rectifier are Red Lion, but I’ve read online of the kt88s burning out quickly.
     
  7. Nicode70

    Nicode70 Overspending completist

    Location:
    France
    I just received and installed a full set of JJ electronic tubes.
    I could not find a NOS solution that fited my budget.
    I’ll let you know how it turns out. But it has got to be an improvement over the chinese stock ones
     
    WhatDoIKnow likes this.

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