I have a spectral dma 50 amp, 80wx2, a/B, sounds dinamic and trasparent, with details, and I m very happy with it.
They say that a j roland model one, 60wx2, can have more punch.
They say that a j roland model one, 60wx2, can have more punch.
suggestion for a SS class AB amp that sounds like a class A ... if such a thing exists
a SS class AB amp that sounds like a class AThis thread is going nowhere. As it doesn’t address the OP’s thread title Nothing repeat nothing! solid state A/B (low bias A) sounds like a 20w> high bias Class-A amp. As there is no xover distortion in Class-A when the top and bottom transistors switch over from each other, because they’re still both biased into Class-A. The transistor xover distortion is most noticeable in the highs, (strings, piano, tops of female high notes etc) on a low bias Class-A/B amp when it switches to B, after a couple of watts. You need around 20w of Class-A to make it disappear on a A/B amp, then it gets too hot because of the rail voltage to get it to be 100w in Class-B. The A’s heat goes up exponentially. compared to just having a 20w class-A push pull with no Class-B So go back to my first post, bi-amp with a simple 20w Class-A for the highs (no B and not very hot). Then an A/B for the bass. https://forum.audiogon.com/posts/2065044 PS: last weekend we listened to Wilson Alexia MkII’s driven by a Class-A/B Gryphon Antillion Evo (it’s got 3 Class-A bias settings 10w 30w and 100w, switchable on the fly), we were listening mainly to streaming v cd, and at the end of the session we decided to go from 30w to 100w, all of us heard the improvement within seconds, and felt the room heat up after 1/2hr. (Didn’t change the streaming v cd outcome though). Cheers George |