Sapphire™ Microphone


The Sapphire is our flagship microphone. Hands free, lightweight, and hardly noticeable when worn on a lanyard or clipped directly to your neckline collar.

Performance: The Sapphire’s vocal clarity is unsurpassed. It boasts high level output, reliable connectivity and exceptional definition. With a built-in breath filter, the Sapphire can also function as a pass-around hand mic.

Function: Hold for 1 second to power ON. The “TL” light will glow blue. With a tap on the power button, the mic mutes (blinking blue light) for private conversation—tap again to restore to normal operation. The auxiliary input allows wireless playback of an audio device like a music player. A three-position slide switch provides selection of HIGH, MID or LOW (Normal, -3dB or -6dB) microphone volume level.

Safety: The IRT-60 features Security Alert, holding down the priority button for five seconds activates a security alert through the existing intercom system.

This is a suitable replacement for IRT-55 and IRT-89 infrared microphones.


Sapphire™ Microphone Description

Sapphire Daily Use:

Sapphire™ Microphone Details


  • Elegant design
  • Only 1.4 oz. including battery
  • Long life lithium-ion battery
  • Rechargeable via micro USB or optional BRC-60 charging dock
  • Battery level indicator
  • Back light under power switch
  • Momentary mute button
  • Back light blinks in mute mode
  • Push “On/Off” power
  • Channel A or B selectable
  • 3 level mic volume switch: Normal, - 3 dB, -6 dB (high, mid, low)
  • Auxiliary input (3.5 mm) for audio device or head-worn mic
  • Low profile clip for mounting to lapel or pocket
  • Adjustable lanyard included
  • Security Alert activation (press/hold “Priority” button 4 seconds)
  • Teacher “Priority” control over aux/line inputs (lowers audio volume)
  • Aux mic input controls
  • Priority Switch features only function with Matrix™, Forum™ 232, Maxim™ III and Spectrum™ III amplifier/receiver


Weight .1 lbs
Dimensions 1.25 × .75 × 3.5 in
Transmission Carrier


Transmission Frequencies

2.08 MHz & 2.54 MHz

2 Channel Selections

Field switchable

Transmitting Diodes



FM wide-band

Pilotone Frequency

32.768 kHz

Peak Deviation

± 25 kHz

Operating Range

60 ft line of sight

Battery Discharge Indicator


> Blue


> Purple


> Red


> Flashing Red

Very low battery

Battery Used

lithium-ion (3.7 V / 620 mAh)

Battery Life

8+ hr/charge

External Power Charger

5 V DC micro USB connector

Transmission Angle

180º conical

User Controls


> On/Off

Push/hold power button

> Mute

Momentary press of power button

Mic vol/gain

Normal, -3 dB, -6 dB

Aux vol/gain

Increase, Decrease

Channel Select

A/B switch in battery compartment

External Aux Input

3.5 mm Stereo Line Level

Sapphire™ Microphone Downloads

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