A pair of AKG C414s (silver) and a Shure SM57 (?) set up to record a grill-less Marshall 1960A 4x12 amp
Condenser mic with 4 selectable polar patterns (carioid, figure-8, omnidirectional, and hypercardioid), 0/-10/-20 dB attenuation selector, and 3-position bass rolloff switch (at 0, 75 and 150Hz, 12dB/octave).
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Part of Butch Vig's array of microphones for the massive guitar overdubs in Siamese Dream. Mics were placed by cranking Billy's amp up to full gain, boosting the headphone send, then moving the mics around using the guitar echo's phase-shifting hiss as a guide. The C414s produced the widest spectrum of sound.