Hi Kiza, I haven't heard these amps, but I suspect the Accuphase would be the warmer of the 3, along with the Lux, however the Simaudio is also a warm sounding amp. I love Accuphase & would be tempted by the E-460, but the Simaudio is just plainly better. It is a zero negative feedback dual mono design (the other two are not), is more powerful, has higher damping (easily doubles down to 350watts@4ohms), is quieter, faster, has a superior volume control & is just a superior circuit design imho. Hope that assists!