The Fredenstein V.A.S. is a open transparent tool with a nice body, a toneprint of the discrete OP-AMP driving a good transformer. On vocals it shines, used with SM-7B sounds amazing, full, open, rounded. I use it with a T-Bone SCT-140 on acoustic instruments, snare sometimes, all with great results. Excelent design, wide array of options, Power Supply PSU inside, XLR and JACK ins and outs, headphone amp to check sound when positioning the mics. I give it a 5 star. Hutch Hutchinson (ex chief designer at Manley Labs) and the team did a great job. Did I mention the price?