The Heaven 11 offers a compelling value and feature proposition: integrated with good power, tube preamp, DAC, headphone amp, phono preamp. Peachtree used to offer a similar integrated, but in a less visually-appealing package. Vincent Audio also has hybrid integrateds with tube preamp section in a couple of their amps, but they are at higher prices. I don’t know how recent ICEPower class D modules compare to other modules. I had Peachtree's Nova 300 integrated which was a powerful class D amp with ICEPower modules, but that was a much older design. I have been using a combination of a ProJect PreBox RS2 Digital (selectable tube section) preamp/DAC/headphone amp that has bluetooth and a phono preamp with a separate NAD C298 class D amp with Purifi modules which is a very good combination, more power (185W/8R) but more expensive and without the visual appeal of the Heaven 11 Billie Mk II.