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.





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.