A review of the UD-507 has been published in the Slovak magazine High & Style.
Click the image to view the article in PDF (English, Approx. 0.6MB)  Or, click here to view the original Slovak version.

(Summary)
"Technically perfect and musically tuned”

“The TEAC UD-507 has proven itself in practice to be an exceptionally versatile component that can replace a top-of-the-line DAC, a serious preamplifier and a full-fledged headphone amplifier in one compact box.”

“… the TEAC UD-507 comes across as a very balanced, modern and technically confident component that can take an already good setup to the next level.”