VoiceLink™ Plus Receiver Amplifier

PN: IMA-100

Amplifier | Infrared Microphone Receiver | Audio Mixer

The low cost VoiceLink™ Plus is an essential complement to the interactive whiteboard system.

While the whiteboard provides a visual for students, the VoiceLink™ Plus reinforces the instructor’s voice and amplifies media sources. The system features a single channel wireless microphone receiver and two 10-watt amplifiers (20 watts total) to power two or four speakers.

When paired with our Sapphire&trade pendant microphone, the teacher’s voice will be clearly heard throughout the room with ease.

And the auxiliary input on the front panel allows for the input of a smart phone, computer, or DVD to supplement the instructional program.





WEIGHT|6.8 oz

VoiceLink™ Plus Receiver Amplifier Details


  • 1 infrared receiver channel
  • 2 x 10 watt amplifiers, 20 W total (RMS)
  • 4-pin Phoenix speaker connection
  • 3.5 mm auxiliary front panel line level input with adjustable gain
  • 2 external microphone sensor inputs, single RCA
  • Mounting brackets
  • Four-pin phoenix speaker connector
  • Light Weight 6.8 oz


Receiver Input

Infrared FM


FM wide-band

Reception Frequencies

Ch. A: 2.08 MHz

Infrared Wavelength

850 nm

Tone Signal

Ch. A: 32.768 kHz


50 μs

Frequency Response

50 Hz, –13 kHz, ± 3 dB

S/N Ratio

›65 dB

Total Harmonic Distortion

‹1 % @ 1 kHz

Nominal Deviation

±10 kHz

Maximum Deviation

±25 kHz

External Sensor

Input 2, RCA

Aux Input

3.5 mm with gain control

Output Power

2 class D digital amplifiers @ 10 W, 20 W total (RMS)
4 Ω
4-pin Phoenix connector

Power Supply

12 V DC, 0.6 A, 7.2 W



Dimensions 4.5 × 5 × 1 in
Weight 6.8 oz

VoiceLink™ Plus Receiver Amplifier Components

Classroom Component Layout

  • Sapphire (IRT-60) wireless pendant transmitter, a high-quality cardiod microphone with lanyard.
  • ICS-55 Ceiling Sensor gives 360-degree infrared coverage for optimal audio performance.
  • VoiceLink Plus Sound Field amplifier/receiver to support classroom audio sources.
  • SP-628 Ceiling Speakers (four shown) provide excellent quality voice reproduction.
  • SP-2000 Wall Mount Speakers (optional), allow for installation when ceiling is not accessible.

VoiceLink™ Plus Receiver Amplifier Downloads