I took a chance and purchased this unproven product for $139 as an initial backer, long before production began. The price was as low as $99 for early backers, which was a screaming deal for a USB DAC. Mine has the blue finish with 720 milliwatts output, they were also available in 450 and 1,000 mW versions in various colors. The Geek Out is an exceptional product. It is made in the U.S. and is sturdy and well made. It took some effort to get this gadget to work on my Windows 7 laptops. There are 4 pages of instructions on Windows driver installation, but the process was quick and fairly easy. Installing new firmware was more difficult, but fortunately after one install it is no longer required. Please heed the warnings about reducing volume before playing music! The Geek Out produces a lot of power that belies its small size. I first played high resolution files, and its absolute clarity and realism was simply stunning, even with modestly priced headphones. It also significantly improves the sound of ripped CDs, DVDs and MP3 files. Disadvantages: Since drivers must be installed on Windows PCs, the Geek Out usually cannot be used with public computers, such as library computers. I have since purchased a refurbished Audioengine D3 for only $119. The D3 doesn't require software installations and updates, sounds great and works fine with any computer. However, the Geek Out sounds better.

Update: I recently installed a new driver, again it was easy using the LH Labs website instructions. I'm now using a audioquest JitterBug USB filter with my DACs, with this filter and the updated driver the Geek Out sounds better than ever, and works seamlessly with Windows 10 and JRiver Music Center. JRMC settings for the Geek Out are here: tinyurl.com/JRMC-GeekOut  Lightly used Geek Outs are occasionally available at echohifi.com at great prices.

After reading the favorable innerfidelity.com review, I bought these directly from V-MODA via their Private-Sale link. I requested an audio only cable instead of the microphone cable, but my request was ignored. The construction, materials and workmanship of these headphones is exceptional, and impressive compared to the mostly plastic headphones found in this price range. The cable is replaceable. The design is very attractive, but the V-80 and earpads are a bit too small. The earpads are hexagonal, and I prefer a round shape for on ear headphones, which are more comfortable. Even with the earpads fully extended, they only just fit my head, the clamping force is too high and they become uncomfortable after a short time. The sound quality is quite good with good defined bass, but in my admittedly short experience with them, the high frequencies lack clarity. V-MODA has a very generous 60 day return policy for headphones purchased from their website, so these are going back.

The construction is a bit flimsy and the power cord is a little too short and non replaceable. But they are lightweight and quite comfortable. Sound was initially very clear and detailed with a wide frequency range. However, the sound has degraded after less than one month of very light use. The left driver/earcup has developed a problem. Holding the earcup against the ear causes the driver to alternately work fine, or lose volume and frequency range. So I am forced to seek warranty repairs. Fortunately, Beyerdynamics include a 2 year warranty, a huge advantage compared to the lame 90 day warranty for the more expensive Sony headphones (Sony's repair warranty is also a paltry 90 days). But with the driver problem, I cannot recommend them. 

Very nice sound and good bass response for the modest entry price. They are very sturdy, and the 1 year warranty is a plus. However, the black ear pads are far too hard and unyielding. I replaced them with far softer and more comfortable red ear pads from Monoprice, but the clamping force of these headphones still make them uncomfortable if worn for extended periods. The included cable is very thin and a bit short, so I replaced it with a nice braided V-Moda one for only $12. So a fairly substantial total of $56.55 invested, including shipping costs. At that price, a set of Shure SRH144 or SRH145 'phones for $39 are a better buy, sound better and are likely much more comfortable to wear.

Despite its old design, the Sonys were initially very clear with a wide frequency range. The materials and workmanship are good, they are lightweight and reasonably comfortable, with soft but durable ear pads. They fold and are easily carried. However, the coiled cord is too long and not replaceable. Another negative is the rather short 90 day labor/1 year parts warranty, and the repair warranty is also only 90 days! In comparison, at least some Audio-Technica, Sennheiser and Shure headphones feature a 2 year warranty. After about 7 months of use, the left earcup developed a pronounced rattle and distortion from low frequency inputs. Gave them away to a local library.