I think your view is a bit simplistic, but translation is probably a problem too.
In my case, I don't need more connectivity. I don't need the amp to have a DAC as my streamer has one. It has a great phono stage which is good for me, as my turntable doesn't have a built in one.
The only other specification not related to connectivity you'll have seen is probably the power output, and don't be deceived by that. You have to judge with your ears, not your eyes.
well the main problem is what they ask for such a device if it was cheaper would be a good amplifier as one pays what one gets, i´m waiting to test one myself as it was ordered to a store of a long time friend of mine, where for decades we test all that is in his store, speakers we put them conected to the ordered amplifiers for the buyer to see how it sounds, normally are in the store to be listened and later sold cheaper , this left there by the brand or suplier.
I just edited this comment as i judge not with my eyes but with it´s quality and price asked, specifications either than the poor options on it make it very low quality and the price asked is too high for what is ofered, i would just refer to it´s din type in/output that in today´s hi-fi world don´t make any sense, if it had a friendly price would be aceptable.
Seen a lot of components with very low quality being sold by a lot of money, can also give an example, i think pro-ject is a stealing brand, a person who for a lot of years didn´t had record player at home, bought for a very high price a pro-ject turntable looking like some better signature turntables,
but made with bit´s of plastic(MDF), also a phono tube pre-amplifier for it, a amplifier and speakers made of kevlar, the woofers, all from pro-ject , only the turntable excluding the cartridge was priced 1.000€ around 5 years ago, i bought all 3 years ago this summer, for 150€
just to play with it or i would never have anything from this horrible brand, more or less in 2020 a friend who as all good turntables known to men he told me that he was going to buy a pro-ject turntable, to what i replyed that it wouldn´t be possible,
but he did it for my surprise only the turntable was their most expensive model and the cartridge cost more than the turntable, in total he spent 14.000€ ,well i would never buy it any 70´s technics is better, for no reason most of them still work without any restoring done,
this pro-ject will never work for 40 to 50 years, it´s an example of what is being done today in the hi-fi world, some talk about evolution but evolution was only reduce the production cost and sell it excessivelly expensive,
that´s what i see in devices like this," built in DAC..." does it need one, a amplifier, or is it the streamer so good that explains it´s cost. Also couldn´t find any for the reduced price refered here.