Look into a used Benchmark DAC3b should be around your budget. Chord Qutest should also be a step up. These two DACs I’m familiar with and I heard the dac1 built into McIntosh integrated.
Other choices just based on reviews are Schiit Bifrost, older Bryston BDA-1 or BDA-2.
@rsf507 let me know where Bricasti M3 is in sale for around $1000. 😂