neural analog

Do you support 48Khz upsampling?

Yes. Support depends on the model. UniverSR, AudioSR, and FlashSR upscale low resolution audio to 48Khz (super resolution). The 'Music Upscaler' restoration algorithm keeps 48Khz sources at 48Khz, and restores 44.1Khz-or-lower sources at 44.1Khz.