The Aston Stealth is a broadcast-quality, active/passive cardioid dynamic microphone. [1]Technical Specifications

• Transducer Type: Moving coil (dynamic) [1]
• Directional Polar Pattern: Cardioid [1]
• Frequency Response: 20 Hz – 20 kHz (± 3 dB) [1]
• Equivalent Self-Noise Level: 10 dB A-weighted [1]
• Sensitivity (at 1 kHz into 1kΩ):
• • Passive Mode: Average 1 mV/Pa (varies across 4 voices)
  • Active Mode: Average 150 mV/Pa (varies across 4 voices) [1]
• Maximum SPL (for 0.5% THD): 140 dB [1]
• Power Requirement: Operates passively without power, or actively with automatic +48V phantom power sensing [1]
• Built-in Preamp: Class-A microphone preamp providing ~50 dB of clean gain in active mode [1]

Voicing Options (Contour Networks)

• V1: Optimized for male vocal presence/clarity
• V2: Optimized for female vocal presence/mid-forward brilliance
• G (Guitar): Tailored for acoustic, Spanish, and electric guitar cabinets
• D (Dark): Mellow vintage timbre emulating a ribbon microphone [1, 2, 3, 4]

I have been using it for broadcast and guitar recording for 4 years in a non smoking studio environment. Because of the need to turn the voicing option quadrant fort different uses, the letters faded but I used a silver sharpie to make sure I could easily identify the right voicing.

Physical Dimensions & Weight

• Length: 196 mm (7.72 in)
• Width / Diameter: 58 mm (2.28 in)
• Weight: 692 g (1.52 lb)
• Internal Shock Mount: Sorbothane viscoelastic polymer suspension [1, 2]