Objective2 + ODAC Headphone Amplifier/DAC

Positives:+It sounds pretty well (maybe 4/5 star sound quality, especially with certain DaC type audiophile music software and hardware conneted). My music is clearer overall.+ Multiple options for volume control and enhancement as well, which is super helpful for some of today's best [non open-back/closed] headphones.Negative-- The manufacturur - Mayflower Electonics* - left out three key required component cables to actually operate the unit.I therefore I had to use cables from my other electronic devices for the power supply, the usb connection (And the subsitute I found from another device only fits loosely), and for the dual audio /aux type cables required and had to purchase a new one.*According to Mayflower, these components were actually supposed to ship but they had a shipping problem, due to a new shipper who repeatedly left the cables out numerous times. However, that doesn't solve the issue this irresponsibility left for me and the lack of cables.

Got this for my DT 1990s and they work great! No issues connecting it to my PC other than changing the audio output quality, it has instructions so I was able to figure it out with them. Would defiantly recommend it!

This is a really good amp. It gives off a neutral, non colorized true to headphone/earphone sound. These can be the end all for an amp that gives out the true sound of your headphones/earphones.