I have owned the following headphones (in order): 1. Beyerdynamic DT770 Pro 80 (still own, use for travel) 2. Thunderpants (woody T50RP mod) 3. Audeze LCD-XC 4. MrSpeakers Alpha Prime 5. MrSpeakers ETHER C   I feel each headphone was a step up from the one before it. Also note that except for the Beyers, all are planar magnetic designs. I have owned nothing but planar and planar hybrid speakers for around 30 years. There is just something about their sound that no dynamic driver can equal.   The Audeze were great 'phones, but their weight...

Please see my full review here: http://www.head-fi.org/forum/thread/539012/review-leckerton-audio-uha-6s-usb-toslink-dac-amp   I have rarely been so enthusiastic about any product as I am about this unit. I can't recommend it too highly. The brand deserves much more name recognition than it is getting. These should be on the short list for anyone looking for a portable amp.

Directly compared: Sony MDR-7509HD (my last headphones) Sure SRH840 Sennheiser HD380 Pro Beyerdynamic DT770 Pro-80 Beyerdynamic DT880 Pro - Show quoted text -   Tonal accuracy is very good. I am using as a reference my home theater with Sunfire XT ribbon hybrids and Bag End professional mastering subwoofers. The all important mid-high region is spot on. Bass is slightly emphasized, true, but the degree is exaggerated IMO.   Transients are very good, bordering on excellent.   Imaging is very good, bordering on excellent...