tube integrated amplifier recommendation with usb


hi,

anyone recommend a tube based intergrated amplifier that has a usb input? I will be running my ear phono preamp into it as well. I will probably run a pc or ipad into the usb. This is for a smaller 2nd room system. The speakers are still to be determined but will likely be something that can down to about 30 hz.

thanks

MIchael
radioheadokplayer