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Home Mobile Electronics Amplifiers S1-2250.1 Monoblock Amplifier (B-Stock)

S1-2250.1 Monoblock Amplifier (B-Stock)


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  • Single channel
  • 2300 Watts RMS @ 1 Ohm
  • Class D
  • 1 Ohm stable
  • 1/0 AWG power inputs
  • Charging system upgrades necessary


I understand that this amp requires specific significant charging upgrades. I have already made these upgrades or will do so before attempting to install and operate this amplifier.

I am responsible for damage to the amp caused by an inadequate electrical charging system.


There’s nothing like opening a brand new product for the first time. On the other hand, if you just want performance and a ding or two doesn’t bother you, B-stock will save you some cash and still get the bass bumpin’.

Following the massive footsteps of our most popular mono amp, the S1-2250.1 monoblock car amp has even more heat sinking and improved circuitry than its predecessor. The advanced heat reduction and a heavy-duty printed circuit board helps to keep its overall operating temperature low, to prevent internal damage.

High-quality class D amp design keeps your amplifier cool, guarantees low rates of total harmonic distortion, and prevents its high output performance from damaging your car. To enjoy the full power this amplifier offers, you will need an upgraded electrical charging system.

The S1-2250.1 drives an immense 2800 watt load at 1 ohm on 16 volts and 2300 watts on 14.4 volts at one ohm. This monoblock amp is ready to drive your choice of HDS2.2’s, HDS3.2’s, or HDX3 Subwoofers in the 1200 Watts RMS and 1500 Watts RMS Power Bands.

Strappable for 4600 watts at 2 ohms, this budget King mono block amp is capable of and ready for Sound Pressure Level competitions and anything else your car stereo can throw its way. 

The S1-2250.1’s screw terminals accommodate up to 1/0 AWG power wire and up to 10 gauge speaker wire. Find everything you need to install this amplifier with our Zero Gauge Amp Kit. 

To secure a long life for your new amplifier, a remote gain control knob is included with your S1-2250.1. The LED indicator alerts you straight away to the presence of clipping signals that can quickly burn or separate your subwoofer voice coils, as well as create bubbles in your former.

We include the remote gain knob to help you avoid costly and needless damage to your gear. Utilize this in tandem with the VM-1 to keep a close eye on your voltage with 60 voltage checks per second for near real-time precision readings.

You’ll love your new S1-2250.1 Mono Amp- From the hard rhythmic hits of a bass drop to the subdued thump of a soft kick, you’ll be able to hear and feel all the detail, impact and precision in your sound system’s low end!

Additional information

Weight 17 lbs
Dimensions 19.6 × 7.8 × 2.2 in

B-Stock, Refurbished


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ClassClass D
Channels1 Channel
Working Voltage8.5 V - 16 V
Maximum Amperage225 Amps
Power @ 4 Ohm 14.4V800 Watts RMS
Power @ 2 Ohm 14.4V1300 Watts RMS
Power @ 1 Ohm 14.4V2300 Watts RMS
Frequency Response10 Hz - 200 Hz
S/N RatioGreater than 80
Damping FactorGreater than 100
Input Sensitivity5 V - 0.15 V
Subsonic Filter10 Hz - 50 Hz
Low-Pass Filter20 Hz - 200 Hz
Dimensions in (LxWxH)19.6 x 7.8 x 2.2

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