oppo_ha-2_1 by John H. Darko February 16, 2015, 15:29 See more Previous article OPPO HA-2 portable DAC and headphone amplifier review Written by John H. Darko John is the editor of Darko.Audio, from whose ad revenues he derives an income. He is also an occasional contributor to 6moons and AudioStream and currently resides in Berlin, Germany. Vimeo: DarkoAudio Twitter: DarkoAudio Instagram: DarkoAudio Facebook: DarkoAudio 2 Comments Leave a Reply How would you compare this to the Herus? Obviously, there are feature differences. However, in terms of sound quality how do they match up? Reply No idea, sorry. I didn’t compare them. Both are of a similar sonic spirit though: bold and rambunctious. Reply Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of new posts by email.