class ab

  1. Naja

    Question about class D

    So, I got a new class D amp (TPA3255) to replace my old AB amp, all in all I think it sounds much better than the AB amp, but I have one big gripe with it. I noticed this without listening for it, compared to the AB amp it makes music faster, like there is no space between one note and the...
  2. pma

    Class D A07 x class D UcD180 and class AB amp - there are measurable differences on acoustical side

    Following the assumptions on possible influence of ultrasonic noise and carrier frequency residuals to tweeter output I have prepared an experiment where the tweeter is driven by 2.82V sine tone of 6kHz from 2 different amplifiers. One of the is AIYIMA A07, see my review...
  3. St1n

    Vintage vs Modern; Class A vs A/B

    My journey so far... I've been on the hi-fi merry-go-round for a little while now, and having an engineering background, decided to go the vintage route as an attempt to save on costs. I've found that after re-capping these units from the 70's, these units generally perform quite well...
  4. anphex

    Weird phenomenon with Emotiva XPA Gen3

    Hi folks, greetings from Berlin! due to a pretty big upgrade in my hifi system I came to occupy myself with looking for a fitting power amp. The speakers are Nubert NuVero 170 which are said to be very power hungry with 85db/1W and mercilessly monitor like (they are). I was powering them with a...
  5. pma

    Measurements of vintage Kenwood KA-5010 amplifier clone - Now with SMPS!

    When I first saw schematics of vintage Kenwood KA-5010 amplifier, 2 years ago, I was immediately attracted and decided to build a circuit copy, better say a copy of the circuit topology with some newer solid state parts used. There were 2 points leading me to this decision - frequency...
  6. amirm

    Electronic Basics: Understanding Class B and Class AB Amplifiers

    In a recent thread on Benchmark AHP2 amplifier (http://www.audiosciencereview.com/forum/index.php?threads/benchmark-first-watt-abx-facepalm.766/#post-23784) I noted that their marketing page for that unit showed a class B amplifier but said that it was class AB. Even though this is a much...
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