"Wideband condenser mic: Quiet TC, +/- 1dB from 9Hz; 4dB quieter and 10dB hotter than the TC40K; Max SPL: 140dB; Cleanest impulse response we've measured: An excellent choice for quieter sources and ambient miking. Sweet Pure Sound! Omni directional, 48 Volt phantom power. Matched pair in a cherry box."