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For audio installers and the do-it-yourselfer who need to add a two-channel stereo amplifier in homes or commercial spaces, Earthquake Sound gives to you the new BTA-250. The BTA-250 is replacing the IW-BTA250-KIT.

Adding an audio zone with Bluetooth® capability has never been easier. 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. The BTA-250 kit comes with the in-wall amplifier, B120R retrofit electrical box, 12–24 VDC power supply, and cable adapter.

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.

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.

Sold and priced per piece.

In The Box:

  • 1 x BTA-250 In-Wall Amplifier
  • 1 x 24VDC Power Supply
  • 1 x Power supply adapter
  • 1 x B120R Electrical Box


  • Flex Power 12–24VDC
  • Bluetooth® Compatible
  • 3.5mm Line Input
  • PoE (Power over Ethernet)
  • Balanced Audio In
  • Supports Cat 5/6
  • Fits most standard single-gang junction boxes


  • Model No: BTA-250
  • EAN: 0689759001850
  • 20Hz–20kHz Frequency Response
  • Output Power:
    2 x 50 WRMS @ 4-Ohm
    2 x 25 WRMS @ 8-Ohm
  • THD: < 0.1% @ 1kHz
  • S/N: 95 dB @ 4-Ohm 1kHz
  • Input Impedance: 20 kOhm
  • Wireless Range: Up to 32.8 ft (10m)
  • Height: 115 mm
  • Width: 70mm
  • Mounting Depth: 76.5 mm
€ 216 w/o VAT
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