Which amp is better?

Hi all, I'm new to amps and ODACS and everything else audio related. I was looking at some amps from mayflower electronics, and I was wondering which was better, and what the difference between the two of them are? any info would be greatly appreciated.

https://www.mayflowerelectronics.com/shop/digital-to-analog-converters/objective2-odac-combo-with-rear-power/

https://www.mayflowerelectronics.com/shop/mayflower-custom-products/desktop-objective2-with-odac/

 

Thanks.

Both of those products are audibly the same. The only difference is the output jack. If you have mostly 3.5mm headphones I suggest picking up the cheaper one (o2/ODAC with rear power). If the majority of headphones you have are 6.5mm jacks, it might be more convenient to grab the desktop version.