If you want a lot of power, yeah class D is almost the only game in town. But for modest power, as per above there is Vista Audio, Burson and also, Dayens and Rega (io) and a few other class A/B offerings around. There are some chi-fi class A/B (and some claiming class A) amps as well if you’re willing to go there (e.g. SMSL).
I'm thinking to try running some DIY speakers with 32 ohm drivers off my headphone amps.. specced at not quite 10W into 32 ohms but close. You've done a fair bit of DIY yourself, @Cspirou .. any thoughts?
You mean "monoblocking" it with a pair of retired Atlas PA601 amps and a Saga you have laying around isn't how you're supposed to drive your desktop speakers?
@Woland I see no real issue if your headphone amp can do at least 5w at 32 ohms. Depends on sensitivity of course and need to see the impedance curve. However most audio is at 1 watt or less.
Thanks @Cspirou - so to your point, there are a lot of non-class D headphone amps that could be used as small desktop speaker amps, if you choose the speaker appropriately. I haven't seen any commercially available 16 or 32 ohm desktop speakers, so this may be a DIY exclusive.
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