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Thread: Class D amplifiers

  1. #1
    Member Sponsor Addicted to Best! nc42acc's Avatar
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    Class D amplifiers

    Do class d amplifiers require break in time? Do they get better as they warm up? Due to the different nature in the class d design do they differ in these respects to other amplifier topologies?
    Marty

  2. #2
    Quote Originally Posted by nc42acc View Post
    Do class d amplifiers require break in time? Do they get better as they warm up? Due to the different nature in the class d design do they differ in these respects to other amplifier topologies?

    I find the output stages don't require burn in, but sound better once warmed up for a long time. Best to never turn off. However the input stages need burn in. Especially if discrete.

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    The Hypex NC400 mono amps are sounding really good after a 24 hour burn in.
    Marty

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    Quote Originally Posted by Blizzard View Post
    I find the output stages don't require burn in, but sound better once warmed up for a long time. Best to never turn off. However the input stages need burn in. Especially if discrete.
    mike, i just found the off switch for the eco mode on my CDP (two weeks ago) before that it would switch its self off every 30 when idle. i think it sounds better now its left on but why?

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    What's a CDP?

    Quote Originally Posted by spazmatron View Post
    mike, i just found the off switch for the eco mode on my CDP (two weeks ago) before that it would switch its self off every 30 when idle. i think it sounds better now its left on but why?
    Marty

  6. #6
    Quote Originally Posted by nc42acc View Post
    The Hypex NC400 mono amps are sounding really good after a 24 hour burn in.
    Just leave them on for days and then listen. Leave them play on random at low volume overnight and listen in the morning. You should hear the NC-500's when coupled with this discrete class A Jfet folded cascode input stage. Anyone who has ever turned their nose up at class d only did so because they haven't heard this. However the cost of this input stage is 10X what the NC-500's cost.

    Name:  Jfet folded cascode class A.jpg
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  7. #7
    Quote Originally Posted by spazmatron View Post
    mike, i just found the off switch for the eco mode on my CDP (two weeks ago) before that it would switch its self off every 30 when idle. i think it sounds better now its left on but why?
    Once all the components are warmed up to optimum operating temperature, they perform better. I think having the electrons settling in nice also helps. I'm not 100% sure.

  8. #8
    Quote Originally Posted by nc42acc View Post
    What's a CDP?
    CD player.

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    Member Sponsor Addicted to Best! nc42acc's Avatar
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    Sorry I thought it was some new power amp since my thread is about class D amps

    Quote Originally Posted by Blizzard View Post
    CD player.
    Marty

  10. #10
    Quote Originally Posted by nc42acc View Post
    Sorry I thought it was some new power amp since my thread is about class D amps
    That Spaz taking things off topic

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