Matt Corby’s push for full studio DIY production took another huge leap forward with the making of Rainbow Valley. Meanwhile, Free to Use Sound’s Marcel Gnauk is another do-it-yourself-er, recording sounds from around the globe (great, but not totally remarkable) and then finding a way of monetising his operation without charging for them (totally remarkable). We find out how. The Aston Stealth mic and Neumann’s new headphones hit the AudioTechnology test bench.