Completely underrated microphone. It sounds big and natural on everything-vocals, acoustic guitar. guitar cabs. I have three of these. I recorded an entire record with these and then I wanted to upgrade because I thought I should get something better. Of course there are better mics but when I went back in AB'd it with my u87, 441 and AKG EB, I was pretty shocked at how great the Bluebird sounded up against them. You're really not gonna find a better microphone for the price. Believe me, I've looked. THis one is very clean. Always used a pop filter.

Here is a review from TAPE OP

I'll be right up front about the fact that I really like Blue mics. I own four of their mics and they all sound great -I mean good enough to stand next to vintage mics costing six times more- and they all sound different from one another. The Bluebird is no exception. We've been using it around the studio for the past month or so, and it's ended up on quite a few keeper tracks, mostly as a vocal, acoustic guitar and room mic. As it's very similar to the Baby Bottle in size, cool retro styling and price, I wanted to do a careful comparative listening test with the two mics. As I expected, they sounded somewhat different from each other. While I found the bottom end very similar, the midrange and top end character is different. I would characterize the Baby Bottle as a very natural sounding mic with a pretty flat response, while the Bluebird seems to have a slight boost on the upper mids and top end. I like this response for most of the uses previously mentioned, especially on backing vocals. This would be an excellent all purpose large diaphragm condenser whether it's your first mic or an addition to a mic collection. As a bonus, the Bluebird comes bundled with a nice wooden box, a well designed and integrated shock mount and pop filter and one of Blue's premium Blueberry Mic cables. This mic is a keeper!