Hidden Audio Bluetooth Amplifier Secret Stereo

Secret Stereo Remote Controlled Bluetooth Amplifier

This easy to install tiny hidden Bluetooth amplifier is controlled by the on-dash or under-dash mounted Bluetooth Interface Controller.

Stream music from your smartphone or other Bluetooth enabled portable music devices.

Can be installed in Classic Cars, Boats, Trailers or any 12-volt negative earth vehicle.

If you have a vehicle that is difficult to fit a normal radio, for instance, the Morris Minor you could fit this kit and download a radio app to your phone like Radioplayer 

No need to drill the car to fit an aerial. Retain the appearance of your vehicles interior & exterior.

Bluetooth Interface Controller MBT-CRXV2

Add Bluetooth to any audio system with this simple, weatherproof controller. Built as tough as the trails you ride, the controller makes it easy to change the source, volume or track at any speed - on any terrain.

Equipped with a stereo RCA output the Bluetooth Controller automatically pairs with your phone and mutes the music for incoming calls (does not provide handsfree capability).


  • Width - 2.27 in / 58 mm
  • Height - 2.27 in / 58 mm
  • Depth - 0.74 in / 19 mm
  • Mounting Depth - 2.37 in / 60 mm
  • Mounting Hole Diameter - 1.125 in / 29 mm (minimum diameter for mounting with rear of panel access) or 1.875 in / 48 mm (maximum for front mounting with plate)

2 Channel Amplifier CA75.2

Micro compact super small 2-channel amplifier with a combination of 150W


  • - Max power output 2 x 75W 4 Ohm
  • - RMS output 2 x 25W 4 Ohm
  • - 3.5mm Aux In or RCA Input
  • - Input Sensitivity - 130mV - 2.5V
  • - Input level control
  • - Low pass/High pass filter - 80Hz-120Hz
  • - Short circuit protection
  • - Thermal protection
  • - Dimensions: 78 x 100 x 39 mm

The enclosure has to have at least 5 cm (2”) ventilation space at all sides, to allow the heat to rise away from the amplifier. Be sure that the power and signal cables can enter the enclosure in a straight line, to avoid the risk of malfunction. Always place the power- and signal cables at ­opposite sides of the vehicle to reduce any noises. The amplifier should be protected from exposure to moisture and direct sunlight.

Remember to always disconnect battery ground before working on a vehicle’s electrical system! Always place a fuse or circuit breaker no more than 30 cm (12”) from the battery, no greater than the fuse(s) of your amplifier for optimal protection.

     •     First, the +12V terminal is connected directly to the battery of your car. Use a cable of at least 10 mm2, and make sure that the connectors are of the same value.  -    Don’t forget the extra “Vehicle protection” fuse.  -   The +12V terminal should NOT be connected to the car fuse box.
     •     Second, the ground terminal (GND) must be fastened securely to the chassis of the vehicle with the same mm2  cable as the positive cable (the same amount of
power has to run through it). Ensure that all paint, undercoating or any other insulation is removed from the area where you want to make your ground connection to.
     •     Finally, there is still one wire to connect, to switch the amplifier ON or OFF. This is the yellow wire. Connect this wire to the ignition of your vehicle, for switching           ON and OFF simultaneously with the vehicle. Or connect it to a separate switch, so that the amplifier can be switched ON or OFF whenever you want.

     •     Pay attention in connecting your speakers and/or sub-woofers. Be sure to observe correct speaker output connections for the front, rear and their polarity.
     •     Do not use the negative speaker output commonly for left and right speakers (common ground). Improper polarity causes a loss of bass response.
     •     Never connect the negative speaker output to the chassis of your vehicle. This can cause severe damage to your Car Audio System.

     •     Put the input level adjustment knob to the minimum.
     •     Put the volume of your radio to 3/4 of the maximum.
     •     Now adjust the input level of the front channel. Slowly turn up the input level and listen carefully until you hear the amplifier begin to distort. A Caliber Amplifier “clips” very softly, so this can sometimes be a difficult adjustment. 

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Hidden Audio Bluetooth Amplifier Secret Stereo

  • Brands CAS
  • Product Code: MBT-CRXV2+CA75.2
  • Availability: Available
  • £149.99

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