Needing a signal booster for some quiet mics the Royer dBooster was unquestionably the best option. I have Royer mics in my studio and I completely trust Royer for their quality of components and build - they are passionate about delivering the best without a doubt! The signal boost is absolutely uncoloured and with the 12 and 20db swithch it makes it a breeze to boost to the level required. It may cost a little more than the competition but you get what you pay for. There are no shortcuts in pro audio gear! Thomann delivered very quickly and reliably. Thoroughly recommend this dBooster from Thomann.