Zapco ST-4X DSP BT

Regular price $1,199.00

Tax included.

The ST-D Series with Bluetooth Streaming.





Zapco Studio-D amps put big power in a small chassis. But these little beasts aren’t just small, and they aren’t just powerful. They sound  great! They had to earn the Zapco name before we put them into production. These amps are loaded with all the advanced features you would expect…and more! They have crossovers, bass boost, both RCA and Speaker level inputs, and preamp outputs to send signal to another amp. The three larger chassis ST-D amps also have a dash remote control. Finally, the ST-D amps have Bluetooth Streaming, so your Smart Phone, iPad, or other Bluetooth device can be a portable music source for your sound system.

When the Studio D BT amps are installed they work just like any other amps with your head unit. But if you fire up the music on your

phone, tablet, or other Bluetooth smart device, these amps will automatically switch over to Bluetooth to grab that signal.


The ST-D amps come in two sizes, two Mico chassis 4-channel units at 320W RMS and 640W RMS and three larger but still compact chassis units that each give you about 1100 watts RMS in 2Ch, 4Ch, or 5Ch form.


Features and Functions


  • 4-Channel, Full Range, Class D

  • RCA and Speaker Level inputs

  • Bluetooth music streaming

  • Variable input gain control

  • Variable electronic crossover

  • Variable bass boost control





  • Power @ 4Ω: 4 x 180watts RMS

  • THD @ Rated Power  < 0.5%THD

  • Power @ 2Ω: 4 x 280 watts RMS

  • Power Bridged @ 4Ω: 2 x 560 W RMS

  • Signal to Noise Ratio > 85dB

  • THD + Noise < 0.5%

  • Frequency Response 15Hz to 30KHz ±1dB

  • Input Sensitivity .25v to 5v

  • Dimensions in mm: 160(W) x 52(H) x 300(L) Overall: 160(W) x 52(H) x 342(L)

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