Audio Technica AT831b Miniature cardioid condenser microphone

This clip-on lavalier mic provides crisp, full-sounding voice pickup and excels as an instrument mic, especially for pickup of acoustic guitar with included AT8444 guitar adapter. It offers excellent gain before feedback and suppression of background noise. An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. It operates on battery or phantom power.

• Clip-on lavalier mic also excels in acoustic guitar applications
• Provides crisp, full-sounding voice and instrument pickup
• Operates on battery or phantom power
• 6' (1.8 m) cable permanently attached to mic, TA3F connector at power module
• RoHS compliant - free from all substances specified in the EU directive on hazardous substances
• Also available as: AT831R - with phantom-only power module AT831c - less power module; includes clothing clip and windscreen only; 10' (3 m) cable, unterminated AT831cW - less power module; includes clothing clip and windscreen only; 55" (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak® wireless systems AT831cT5 - less power module; includes clothing clip and windscreen only; 55" (1.4 m) cable terminated with TA5F connector for ATW-U101 body-pack wireless system

• Element: Fixed-charge back plate, permanently polarized condenser
• Polar Pattern: Cardioid
• Frequency Response: 40-18,000 Hz
• Low Frequency Roll Off: 80 Hz, 18 dB/octave
• Open Circuit Sensitivity: Phantom: -44 dB (6.3 mV) re 1V at 1 Pa Battery: -46 dB (5.0 mV) re 1V at 1 Pa
• Impedance: Phantom: 200 ohms Battery: 270 ohms
• Maximum Input Sound Level: Phantom: 135 dB SPL, 1 kHz at 1% T.H.D. Battery: 121 dB SPL, 1 kHz at 1% T.H.D.
• Dynamic Range: Phantom: 106 dB, 1 kHz at Max SPL Battery: 92 dB, 1 kHz at Max SPL
• Signal to Noise Ratio: 65 dB, 1 kHz at 1 Pa
• Phantom Power Requiremens: 11-52V DC, 2 mA typical
• Battery Type: 1.5V AA/UM3
• Battery Current Life: 0.4 mA / 1200 hours typical (alkaline)
• Switch: Off, on-flat, on-roll-off
• Cable: 6' (1.8 m) long (permanently attached to microphone), 0.10" (2.6 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
• Accessories: AT8417 clothing clip; AT8444 instrument adapter; AT8531 power module; AT8116 windscreen; battery; protective carrying case

Type  Condenser - Omni
Frequency Ressponse    60Hz - 18kHz
Sensitivity    -33.5dB re 1 Volt/Pascal (21.00mV @ 94 dB SPL) +/- 2 dB @ 1kHz
 Resistance   3000Ω
Dimensions   4.50mmW x 12.00mmH x 4.50mmD
Weight   1.00gm
Accessories    Αntitrauma case,WS-LAV, Minifur LAV, Micon cable, Spanner

This miniature condenser microphone achieves full-sounding pickup and is known for outstanding consistency and dependable performance. Supplied with both a clothing clip and guitar mount, it provides natural and articulate vocal reproduction when used as a clip-on lavalier and excels in pickup of acoustic guitar. The PRO70 is designed to make music and speech clearly and comfortably audible, yet never draw attention to itself or its operation. The microphone is equipped with a low-frequency roll-off switch that allows for reduced pickup of room noise. The versatile PRO70 may be powered by either battery or phantom power. Its cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of the desired sound source.

Miniature condenser microphone is ideal for both vocal and acoustic guitar applications
Natural and articulate vocal reproduction when used as a clip-on lavalier - clothing clip included
Excels in pickup of acoustic guitar with included instrument adapter
Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source
Switchable low-frequency roll-off
Corrosion-resistant contacts from gold-plated XLRM-type connector
Operates on battery or phantom power
6\' (1.8 m) cable permanently attached between microphone and power module

Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Cardioid
Frequency Response: 100-14,000 Hz
Low Frequency Roll Off: 80 Hz, 8 dB/octave
Open Circuit Sensitivity: Phantom: -45 dB (5.6 mV) re 1V at 1 Pa Battery: -45 dB (5.6 mV) re 1V at 1 Pa
Impedance: Phantom: 200 ohms Battery: 200 ohms
Maximum Input Sound Level: Phantom: 123 dB SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range: Phantom: 96 dB, 1 kHz at Max SPL Battery: 96 dB, 1 kHz at Max SPL
Signal to Noise Ratio: 67 dB, 1 kHz at 1 Pa
Phantom Power Requiremens: 11-52V DC, 2 mA typical
Battery Type: 1.5V AA/UM3
Battery Current Life: 0.4 mA / 1200 hours typical (alkaline)
Switch: Off, on-flat, on-roll-off
Output Connector: Integral 3-pin XLRM-type
Cable: Integral 6\' (1.8 m), permanently attached between microphone and power module
Accessories: AT8411 clothing clip; AT8444 instrument adapter; power module; windscreen; battery; soft protective pouch

The e 608 is a super-cardioid microphone ideal for almost invisible clip-miking
of woodwind (except certain Flutes), brass and drums. A newly developed clamp
and gooseneck mounting enables the capsule to be positioned close to the signal
source for high realism and high-level output.

Features
Rugged reinforced glass-fibre body
Shock-mounted capsule provides low sensitivity to impact and handling noise
Hum compensating coil
Extremely robust connection cable with XLR connector
Delivery Includes
1 e 608
1 microphone clip
1 pouch

Technical Data
Frequency Response  40.....16000 Hz 
Sensitivity in free field, no load (1kHz)  0,8 mV/Pa 
Min. terminating impedance  1000 Ohm 
Dimensions  d 17 x 185 mm 
Weight w/o cable  20 g 

The Electro-Voice ULM18 Unidirectional Lavalier Microphone provides hands-free speech and vocal operation with the Electro-Voice R300 wireless microphone system. The ULM18 connects to the BP300 beltpack transmitter.

• For R300 Wireless System
• Compatible with BP300 Beltpack
• Unidirectional Polar Pattern

Transducer     Electret condenser
Polar Pattern     Cardioid
Frequency Response     20 to 20,000Hz
Output Impedance     165.5 Ω
Sensitivity     -39.0 dBV/Pa (11.0 mV)
Max Input Sound Level (SPL)     1000 Ω load: 129.5 dB SPL; 2500 Ω load: 134.5 dB SPL
Signal-to-Noise Ratio     57.0 dB
Dynamic Range     @1kHz
1000 Ω: 92.5 dB SPL; 2500 Ω: 97.5 dB SPL
Self Noise     37.0 dB
(equivalent SPL, A-weighted, typical)
Clipping Level     1000 Ω load: 1.0 dBv; 2500 Ω load: -4.5 dBv
Operating Temperature     Operating: 0 to 135°F (-18 to 57°C)
Storage: -20 to 165°F (-29 to 74°C)
Polarity     XLR: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Power Requirements     11-52VDC phantom power (IEC-61938), Dimensions (LxDiameter)     Length: 5' (1.52m)
Diameter: 0.23" (5.8mm)
Weight     4.3 oz (121 g)