i used them everyday..it's ribbonmic and it's 1100USD for R121 and 1500USD for R122. R121 is bit picky when connected to preamp, it doesn't sound good on older neve stuff but sound huge on my hardy M1 preamp. R122 was bit step up. phantom powered ribbon mic. sound good on any source even on vocal. the real competitor is AEA R84. it's large geometry ribbon mic. we used in almost everyday..