- Teenage Engineering CM-15; portable large diaphragm condenser microphone; can be used in 3 different ways: as a classic microphone via XLR (requires 48V phantom power), as a USB microphone and as a standalone microphone with integrated preamp and line-level output via 3.5mm jack (powered by integrated battery); all three modes can be used simultaneously; polar pattern: supercardioid; converter: ESS Sabre ADC 96kHz; self-noise: 14 dBA; Max. SPL: 138 dB (0.5% THD); impedance XLR: 600 ohms; impedance line out: 300 ohms; built-in rechargeable battery for up to 10 hours of runtime; gain switch with 3 settings: -18 dB, 0 dB and +18 dB; includes 1/4 and 3/8 stand adapters, mini-XLR to XLR cable, USB-C cable and carrying case; dimensions: 90 x 65 x 22 mm; weight: 132g