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Home>>Microphones>>Microphones & Accessories: Plug-In

Microphones & Accessories: Plug-In

sp-pu Professional Ultra-High Sensitivity Plug-in Microphone for Steno Machines & Laptops


This professional microphone is a one piece ultra-high gain, ultra-high sensitivity, ultra-low noise microphone that can be plugged into any steno machine, digital recorder or standard computer microphone input jack. The microphone is very small and measures about 1.25" long.

It has an extended frequency response and very natural and accurate sound which provides deep solid bass, smooth mid-range and clean highs. Vocals come through clean and crisp. The Ultra-high sensitivity offers great pickup range. The actual distance will vary, depending on the amplifier power of the recording device, the room acoustics and the loudness of the sounds you are recording.

Constructed with our best omnidirectional microphone element, it is perfect for recording court proceedings, depositions, lectures, business meetings, interviews, music, etc. It is a great choice for court reporters making a recording with their writer. A high quality, removable windscreen is included with the microphone.

  • Made in USA
  • Pick up Range: Up to 125 foot radius
  • NO BATTERIES. Powered by the microphone input jack.
BundleUltraboundary Bundle - Ultra Boundary + Digital Sound Card


This bundle includes:

  • Ultra Boundary Microphone
  • USB Digital Sound Card with Noise Reduction Technology and +30dB microphone boost
  • Pure Audio Voice Solutions Software Suite –Audio Commander & Voice Center

This setup bypasses your computer's audio system, providing better microphone input performance and significantly improving the voice audio and clarity. The USB digital sound card increases the performance of the boundary microphone by using patented noise reduction technology.

AudioCommander Audio Control Panel software includes speaker volume adjustment with Pure Audio noise reduction and 10-band graphic equalizer with 18 built-in presets to customize sound for your listening preference. Voice Center is a full function digital audio recording application with unlimited recording time and the ability to compress audio/voice files in WMA format and send them via e-mail and drag & drop audio/voice files into Microsoft Word, PowerPoint or other multi-media applications.

Powered by USB port - NO BATTERIES

UltraBoundary Ultra Boundary Microphone


The Ultra Boundary Microphone offers clearer, crisper sound quality and works with most USB soundcards and mics, audio recorders, and with all steno machines.

Omnidirectional microphone element picks up sound in all directions equally. Ultra-high sensitivity mic element records sounds ranging from extremely quiet to moderately loud. Ultra-High Sensivitivy

  • Ultra-High Gain
  • Low Noise mic element
  • Approximate range: 125 feet
  • Premium double shielded 10 foot cable
  • NO BATTERIES. Powered by the microphone input jack.
  • Weight: 5 ounces
MS-MMM-1-KIT-rev.jpg Ultra High Sensitivity Microphone Kit

The SP-KIT features an omnidirectional microphone with -23dB ultra high sensitivity that is wired for a steno machine, computer, USB adapter, or stereo microphone input jack.
The kit includes a microphone isolation/mounting plate with an attached foam windscreen and a 72 inch extension cable.
The microphone is the SP-UUU (below), which is a very small, one-piece microphone that can be plugged into any recorder or computer that supplies a bias voltage between 1.5 and 12 volts DC at the microphone input jack. The microphone element is built right into the end of the high quality gold-plated 3.5mm (1/8") mini plug. The microphone is mono but it produces audio on both channels when plugged into a stereo recorder.
The SP-KIT microphone has an extended frequency response and a very natural and accurate sound, providing deep, solid bass, smooth midrange and clean highs. Vocals come through clean and crisp. It has a very wide dynamic range and will handle high sound pressure levels.
To use the mounting plate, simply slide the microphone into the foam windscreen and your microphone is now isolated from the surface you place it on as the foam isolates the microphone from the mounting plate. For a semi-permanent mount, self-stick Velcro is included for mounting to steno machines, computer screens and other surfaces.
Brand: Sound Professionals 
Frequency Response: 20-20,000 Hz 
Signal To Noise Ratio:  62dB 
Open Circuit Sensitivity: Ultra high -23dB 
Maximum Pickup Range:  50 feet 
Maximum Input Sound Level: 120dB 
Dynamic Range: 96dB 
Polar Pattern: Omnidirectional 
Microphone Body Material : Matte black metal covered brass adapter 
Dimensions in inches: 0.4 X 1
Cable Length: 72 inches
No Battery Needed
sp-drp Accessory Case


 This case provides excellent storage for portable devices, microphones and other small items. The case is well constructed to provide protection during transportation from location to location. 

  • Product Features:
  • Compact case to store or transport small products
  • Slim line design allows case to easily fit into any backpack or briefcase
  • Durable, smooth, hard shell exterior to protect valuables
  • Interior strap secures contents in place
  • Zippered closure 
  • Fabric: Molded EVA
  • Size: 6.75 inches 5 inches 1.75 inches
  • Internal Dimensions: 5.5 inches x 3.25 inches x 1.25 inches
  • Weight: 4 oz.


pouchsmall.jpg Neoprene Padded Case


Neoprene zippered padded pouch protects your small electronics and other items.

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