FWIW, you might check out the Melody SP3 from av123. I believe it's in your price range, especially if you partner with someone who wants their little monitors in the package deal they have.
I haven't heard one, btw, but it looks well built. It is not quite minimalist in the sense that the 47 Labs chip amp integrated is, but it is minimalist in terms of features and so forth. And it's tubed.
Now, you want to rectify the bass, and perhaps you think tubes are not the best way to do that. I would expect your current speakers do not really have low bass, and would wonder if you aren't hearing a room problem. It's funny that an integrated would have one note bass. But just in case, the Melody is a heavy chunk of iron, and some of that would be fairly robust transformers for the money.
I haven't heard one, btw, but it looks well built. It is not quite minimalist in the sense that the 47 Labs chip amp integrated is, but it is minimalist in terms of features and so forth. And it's tubed.
Now, you want to rectify the bass, and perhaps you think tubes are not the best way to do that. I would expect your current speakers do not really have low bass, and would wonder if you aren't hearing a room problem. It's funny that an integrated would have one note bass. But just in case, the Melody is a heavy chunk of iron, and some of that would be fairly robust transformers for the money.