The Topping EX5 is roughly the same price and has a very good headphone amp in the same box.
Cheaper, but not balanced, it’s nice to have options . The Joxjie offerings seem be in scarcer supply in the US as well, frequently making them difficult to find for sale.
The loxjie was a smoking deal right after it was reviewed here. The smsl looks nice but not at 2x+ the price.