Hamilton Buhl Assistive Listening System


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Product Condition: New and Factory Fresh
Limited Warranty1 Year
Shipping Weight: 33 lbs.
Hamilton Buhl Assistive Listening System
Tech Specs


Ergoguys, LLC

Manufacturer Part Number


Manufacturer Website Address


Brand Name

Hamilton Buhl

Product Name

Assistive Listening System

Marketing Information

Most of us take hearing for granted. Sound, such as speech, occurs somewhere in the environment around us, and we, quite simply, "hear" it. And, It is well-recognized that hearing is critical to speech and language development, communication, learning and social interactions.

Breakdown learning, communication and social barriers with the HamiltonBuhl ALS700 Assistive Listening System. Separate the sound that your audience wants to hear from the background noise, and deliver it at the right amplification level, directly into the individual's ear.

Individuals utilizing the ALS700 receivers will easily achieve the required volume increase and gain the same level of understanding without making it too loud for everyone else.

A single ALS700 System transmitter can serve an unlimited number of receivers in a 150 foot range! Fully ADA compliant, the ALS700 is the ideal assistive listening system for any environment: school, movie theater, house of worship, performance theater and more.

Each ALS700 System includes:

1 - Transmitter
6 - Receivers
6 - Earbuds (ALSH700 on-ear headphones available for purchase)
1 - Carry case

Product Type

Assistive Listening Kit

Additional Information

  • Frequency Response 100Hz - 8KHz
  • Signal to Noise Ratio 41dB
  • Total Harmonic Distortion <0.5%
  • RF Carrier Frequencies Channel 1: 75.5MHz
  • Channel 2: 75.9MHz
  • Frequency Stability >0.005%
  • Modulation FM ± 75KHz max.
  • Operating Range Up to 150 feet line of sight
  • Transmitter
  • Mic Input Connector: 1/4" Phone jack
  • Impedance: Unbalanced
  • Line Input Connector: 1/4" Phone jack
  • Impedance: 100K unbalanced
  • Antenna: Permanently mounted, telescoping
  • Power Output: 13dBm
  • Power Requirements: 5V DC, regulated @ 200mA
  • Adapter included
  • Dimensions: 9" x 6.07 x 1.97"
  • Receiver:
  • Audio Output 100mW
  • Connectors 3.5mm jack for earphone output
  • Earphones Mono earbuds
  • Antenna Integral with earphone cord
  • Sensitivity 3uV for 12dB with squelch defeated
  • Squelches at 10uV for min. 50dB S/N ratio
  • Mute Threshold 5 - 8uV
  • Power Requirements Three (3) 1.5V AAA size batteries
  • Dimensions 2.54" x 1,32" x 3.92"

Package Contents

  • 1 x Transmitter
  • 6 x Receivers
  • 6 x Earbuds (ALSH700 on-ear headphones available for purchase)
  • 1 x Carry case

Limited Warranty

1 Year