Can't front, 200 isn't bad. The guesstimates from what I was reading were 600ish. I would still want a guaranteed upgrade window. Thoretically, an iPhone can be upgraded for a decade or more, maybe forever, but they pull all manner of fukkery to get you to buy again. And where is the 2.1 board? The other worthy manufacturers already have models with it in them.I talked with a NAD rep my last time at CES back in 2k19. He said the upgrade would be a couple hundred. It's future proof that's why it cost what it does. It's internal parts are built to last. I said the model but I meant the NAD T-778. The cost is 3k not bad but you probably could downgrade and get the v-758 model.