The SM137 uses an ultra-thin diaphragm for quick response, a very smooth high end, and tight bass. It has a transformerless design, low-noise operation and 15dB pad for high SPL sound sources.

• Ultra-thin diaphragm for smooth high end and tight, controlled low end
• Transfomerless Class-A preamplifier
• 15dB pad for performance consistency across a wider range of high SPL sources
• Low self-noise and transformerless preamplifier circuitry

Manufacturer: Shure