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Zapco ST-1000XMII 1000 watt Mono Class D Amplifier

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Soundstream T5.2500DL 5 Channel Amplifier

Zapco ST-1000XMII 1000 watt Mono Class D Amplifier

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  • 1000 watt RMS @ 1 ohm
  • Remote Dash Control Included
  • Bass Frequency Control and Phase Control

Zapco ST-1000XMII

1000 watt Mono Class D Amplifier

Everyone wants great sound in their car, but not everyone wants to compete in sound-offs. In 2013 Zapco determined to put its 40+ years of experience to work and develop a line of amplifiers that everyone could afford, that would meet today’s need for a light weight, compact product, and at the same time, stay true to Zapco’s heritage of unsurpassed sound quality and solid reliability.  

The new Studio-X amplifier is the result of that work and today the Studio-X line is complete.

Studio-XM Class D Bass Amplifiers

Bass, Bass, Bass.... and more bass. Bass is only a small part of most any musical pieces, but it is what sets the mood for everything else. And, although everyone wants bass, everyone’s needs for bass are not the same. In the Studio-X line we have six Class D, mono bass amplifiers, ranging from 500 Watts RMS to 2,000 watts RMS.  And if that is not enough for you... all the Studio-XM amps can be strapped together to a single voice coil, so you can always double you power by just buying another of the same model amp.

All the ST-XM Class D bass amps are 1Ω stable as necessary in today’s market.  However, we also see a strong need to provide power to a 2Ω load in the medium
power ranges for the sound quality fanatic in all if us. The 2Ω load, is a more efficient  use of current and is better for sound quality. The ST-850XM and the ST-1350XM
were both designed to have maximum efficiency and produce over 70% of their  power into a 2Ω load with 600W RMS and 970W RMS respectively.
With RMS powers of 500W, 850W, 1,000W, 1350W, 1650W, and 2,000W, and the ability to strap together, the ST-XM amps cover just about any need you might have
from 500watts to 4,000 watts.

Here is what all the new ST-XM amps share:

Remote Dash Control - All the ST-X amps come with a remote so you can change the bass output as needed instantly.

Input Sensitivity (Gain) Control - Sets sensitivity anywhere 200mV to over 5 volts.

Mono Bridge Out and Bridge In - These allow the bridging of two amplifiers together (Strapping). When the Bridge Out RCA from the
main amp is connected to the Bridge RCA In of the slave amp, the main (out) amp will take priority for control. At that point you will make all adjustments at the main
amp only and they will be duplicated in the slave amp.

Low Pass Crossover -Intended only as bass amplifiers, all the ST-XM amps have a full time low pass crossover variable from 40 to 180Hz.

Sub Sonic (HP) Filter - Reproducing frequencies below those you want to hear wastes amplifier power. The Sub Sonic filter helps save that energy for the frequencies you do want to hear. More importantly, trying to reproduce frequencies below the range of the woofer can quickly destroy your woofer. This is especially important for ported enclosures. i.e. If your enclosure is ported 40Hz then you should set you Sub Sonic to 40 Hz to protect your sub woofer investment.

Bass Boost Control - All the ST-XM amplifiers have a variable bass boost. You can vary the amount of the bass boost from 0dB to 12dB as needed for your particular installation.

Bass Frequency Control - Fact: No two cars are the same. The bass response of a woofer will be different in every car you put it in, so a bass boost at 50Hz can be great for one car but useless in another. The ST-X Bass Frequency control allows you to set the bass boost at any frequency from 30Hz to 80Hz, so you can set it precisely to match your music in your car.

Phase Control -Facing your bass enclosure to the front will sound different than facing it to the rear.  In either case, changing the phase of the woofers will also make a difference. The problem is you won’t know which is best until the system is installed. Then you can listen each way to see which way the bass sounds best. The phase control on the ST-XM amps lets you adjust the phase of the signal right at the amp. In addition the ST-XM phase control is variable from 0° to to 180° so you can dial in exactly the phase relationship that works best in your car.


  • Class D
  • RMS Power/ch. at 4 ohms 500 watt
  • RMS Power/ch. at 2 ohms 750 watt
  • RMS Power/ch. at 1 ohm 1000 watt
  • Strapped at 2 ohm 1920 watt
  • Efficiency 85%
  • Frequency Response 10Hz - 150Hz
  • THD at rated power 0.2%
  • Signal to Noise 90dB
  • Tested Voltage 14.4v
  • Recommended Fuse Rating 105A
  • Dimensions (mm) L/W/H 288 x 160 x 52
  • Dimensions inc. feet/terminals 314 x 160 x 52
More Information
Product Name Zapco ST-1000XMII 1000 watt Mono Class D Amplifier
Manufacturer Zapco
Manufacturer's Warranty 1 Year Manufacture's Warranty
Manufacture's Warranty 2 N/A
UPC 636644601503
Manufacturer Sku ST-1000XMII