The xDuoo XD-05 Plus is a mobile DAC/Amp that can work separately as each option and provides 1W of pure power through the headphone output. It is priced at 289$.
ddHiFi TC25B is a tiny, USB-C portable DAC with a 2,5mm headphone output. It is priced at 39,99USD.
EarMen Eagle is a pendrive-size mobile DAC/AMP combo powered by ESS ES9281 chip and it costs $119.
iFi Hip Dac is an entry level portable DAC with balanced output and MQA decoding. It is priced at 149$.