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Class D Amplification

Discussion in 'AV Pre-Amp/Processors & Power Amps' started by Agent 86, Jun 28, 2004.

  1. Agent 86

    Agent 86
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    What is it? Is it trendy because it's cheaper to manufacture or because it's better?

    Regards,
    Tim
     
  2. Thunder

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    Digital amplification, rather than the more traditional analogue. It has benefits, in that they can be crammed into small spaces and are very efficient. But with higher frequencies they tend to produce unacceptable amounts of distortion in most cases. This does however make them ideal for subwoofers as with lower frequencies these problems dont occur.
     
  3. Agent 86

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    Thanks Thunder.
     
  4. lowrider

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    I am afraid this info is seriously out of date... :nono:

    There are many "digital" amplifiers very good nowadays, Bel Canto, TACT, Jeff Rowland, Audio Research, to name just a few... :lesson:

    The main advantage, IMHO, remains that they are very efficient, also as they have few parts, short signal path and dont heat much, they can be more economic to make and sound extremely good, or not if you use cheap components... :cool:
     
  5. Thunder

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    I said "In most cases" The makes you suggest would be regarded as less well known niche companies by most. Also the cost required to get quality digital designs such as ten ones you suggest is considerably more than a high performance analogue one.
     
  6. lowrider

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    Again, your info is out-of-date... ;)

    There is expensive and cheap in every technology, for instance my Bel Canto eVo 6 Gen2 6 x 120 or 3 x 360 watts, costs aproximatelly the same as the Bryston 6B SST 3 x 300 watts, and, at least in my system, it sounds much better, not to mention that it is smaller, heats considerably less and uses less than half the energy...

    Also the Panasonic digital receivers (who use TACT technology, from TI now), are very cheap, arounf $300 if I remember well, and highly regarded in the USA...

    Actually I think all receivers will be class D soon, and, except for niche products, most amplifiers too...
     
  7. Thunder

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    The digital amplification in cinema in a box systems is way behind the analogue counterparts. The only big name to have put digital amplification in an AV amp is Sony and this is still behind Denon, Yamaha etc in pure performance terms. Yes digital amplifiction is probably the way forward but for now the technology is still in its infancy and has a long way to go.
     
  8. rags

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    The 1000 watts of class D power in my B&W ASW750 translates into some tremendous bass !
     
  9. lowrider

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    What about HK, isnt it a big name, by the way, have you ever heard any digital amplification besides subwoofers... :confused:
     
  10. Thunder

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    We will just have to agree to differ on this one Antonio :)
     
  11. lowrider

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    No problem, but your opinion would be much stronger if you had actually heard the things... ;)
     
  12. Thunder

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    [Who said I hadnt heard any digital amplification Antonio :)
     
  13. lowrider

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    I asked and you didnt answer, so what did you hear... :confused:

    I confess I only heard my Bel Canto, but it is encouraging... :rolleyes:
     
  14. JohnWH

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    In theory class D amplification can offer the lowest distortion and noise injection of any system. This is due to the fact that the signal can be passed around digitally and only be converted to analogue at the power output stage. Obviously there is still work required on the techniques associated with creating what is basically just a D to A converter with a very high power output, but I guess it could get there...

    John
     
  15. thxultra

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  16. lowrider

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    I replaced Bryston with class D Bel Canto, and the second is better in all regards, at least what I hear, but I would expect Bryston to say theirs is better, at least until they change technology... :lease:
     
  17. Daneel

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    I have read very encouraging things about the lower end class D amps such as the panasonics. The behaviour at clipping is much nicer than on analogue amps. As soon as I get the chance I'll have a listen.
     
  18. capdegat

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    I have seen a few veritas p400 amps up for sale . Does anybody know anything about them i.e are they any good / is the company still going ?They did have very good review in hifi news a cuople of years back.
     

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