Optogate PB-05

Optogate PB-05

The PB-05 is available in 3 versions

PB-05M (Standard pro unit)

Has an attenuation of -42 dB in the "Mic Off" position. Includes a by-pass button. (Original unit)

In Stock. Price: $249.00

PB-05D (Developed for In-Ear monitors)

Reduces the signal to -16 db. You will hear some overall ambience, which is sometimes preferred by artists using In-Ear monitor systems. Includes the by-pass button.

In Stock. Price: $249.00

PB-05E (Uses only dynamic mics)

The “economy” version has the same performance of the "Pro" models with a couple of changes to make it economy. Less circuitry less cost. It is made of the same material, looks the same but it works only with dynamic mics, SM-58’s and the like. Instead of a bypass switch built in, it uses the mixing board’s phantom power to by-pass the unit. The distance trim pot only turns 270 degrees, please do not over rotate.

In Stock. Price: $219.00

The PB-05 is an automatic microphone gate and is based on the latest IR optical technology.

The PB-05 is inserted between a microphone and the xlr mic cable. It's equipped with an infrared sensor. The PB-05 senses if someone is in front of the microphone and will switch on the microphone. The microphone will be switched off automatically if no one is in front of it. The distance can be adjusted between 2 inches and 4 feet with the help of the trim pot and a small screwdriver. The singer will see a red status LED indicating that the microphone is switched on. The PB-05 is powered by 48 Volt phantom power from the mixing console. Condenser or Dynamic microphones can be used with the PB-05M and PB-05D. On these two units a small push button on the top allows the user to toggle between "Mic always On" and "Optogate Enable".

The PB-05 is ideal for lead and back-up Vocals, Acoustical instruments and Talk-Back mics. Optogate products are by far the best and easiest solution for the most common problems in live audio applications. It eliminates unwanted background noise of other instruments, like drums and guitar amps into unused open microphones on stage. The clarity of the mix and the dynamics are increased due to less phase cancellation between other open mics and stage background noise. It also reduces the possibility of Feedback from unused open mics!

Shipping & Handling

US Postal Service is used for shipping. Please contact me for any other expedited requests. Purchased items will be shipped to address listed in buyer's PayPal account.

Return Policy

All returns must include all the original packaging. If product is not a warranty issue, buyer pays all shipping.


  • Turns off your mic automatically via infrared signal when you are not using it!
  • No false audio triggers!
  • Set the distance and play!
  • Eliminates unwanted sound from going to your mix, monitors, and P.A.!
  • Excellent for in-ear monitors and loud stage environments!
  • Your sound will be better than EVER before!
  • Your amps will sound better!
  • Your ears and your audiences will thank you!
  • One year warranty!
  • You will not be able to live without these gems once you use them!

Photo Gallery


  Optogate PB-05 Manual

  Adobe Reader Download

Optogate PB-05
Dimensions: 69mm Length x 35mm Height x 21mm width
Connectors: XLR 3-pin (1 = gnd, 2 = plus, 3 = minus)
Case construction: Aircraft-aluminum, black galvanized
Distance Adjustable between 15 - 120 cm (depending of the type of reflection surface)
Switching noise: Immeasurable
Frequency responses 0 Hz - 30kHz, - 3 dB at 150 Ohm Microphone impedance
Signal noise ratio: -114 dB / -122 dB, Mic on / off, 150 Ohm Mic.
Distortion < 0,05 % with 100mV signal
Delay time mic on: < 0,2 Sec
Delay time mic off: ca. 1 Sec
Attenuation "mic on": 0 dB
Attenuation "mic off": 16 dB or 42 dB in connection with 150 Ohm mics, depending of the model
Usable mic types: All types of dynamic - Phantom powered mics up to 10 mA current consumption (M and D models)
Maximum input level: 3 dB (1,1V)
Operating temperature: 0 - 55 degrees Celsius
Background light range: 0 - 20000 Lux daylight and 0 - 12000 Lux electric light bulb
Distance measurement: Active infrared reflection principle with 3 bit code
Power: 24-48 V Phantom power (passes phantom power to the microphone)
Current consumption: ca. 3.7 mA