Amplifier BTA-250

This three input in-wall amplifier can accept signal through the front panel 3.5mm stereo mini jack, Ethernet port, or Bluetooth® connection. With the provided 12–24 VDC power supply and cable adapter, the BTA-250 can produce 50 WRMS per channel and can easily power a pair of ceiling, outdoor, or in-wall speakers. It is compatible with 4-Ohm and 8-Ohm systems and also features a front mounted volume control knob for added convenience.

This is a wireless in-wall amplifier kit that packs flexibility, power, and control into one very small and discrete package that can be used for both indoor and outdoor settings.

Designed to fit into a standard single-gang junction box, the BTA-250 can be easily installed into any new or pre-existing constructions (home, bars, restaurants, hotel rooms, etc.). For home installations, the BTA-250 can be a great addition for your garage, workshops, sheds, and even around hot tubs and pool areas. Wherever you feel the need to add an audio zone, Earthquake’s new BTA-250 will conveniently expand your home audio system giving you a multitude of installation ideas.


Conveniently add a 2-channel stereo audio system
Fits most standard single-gang junction boxes
Can be used in either indoor or outdoor settings
Pairs well with most Earthquake in-wall and in-ceiling speakers
Supports Cat 5/6
Bluetooth® compatible
3.5mm line input
PoE (Power over Ethernet) support with Earthquake IWS
Balanced audio in
Power Supply12 – 24VDC
Frequency Response20Hz–20kHz
Output Power2 x 50 WRMS @ 4-Ohm
2 x 25 WRMS @ 8-Ohm
THD< 0.1% @ 1kHz
S/N Ratio95 dB @ 4-Ohm 1kHz
Input Impedance20 kOhm
Wireless RangeUp to 32.8 ft (10m)
Dimensions (W x H x D)70 x 115 x 99.4mm (2.76″ x 4.53″ x 3.91″)
Mounting Depth22.9mm (0.9″)