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Home Mobile Electronics Amplifiers S1-850 Monoblock Amplifier

S1-850 Monoblock Amplifier

(1 customer review)


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  • Single channel
  • 900 Watts RMS @ 1 Ohm
  • Class D
  • 1 Ohm stable
  • 4 AWG power inputs

In stock

SKU: S1-850 Categories: , Tags: ,


The SoundQubed S1-850 Monoblock Amp offers unrivaled Class D power at an unbeatable price. This heavy-duty car subwoofer amplifier delivers more than 900 Watts RMS through a single channel for subwoofer or array applications.

Mount the S1-850 just about anywhere. Our most affordable and compact monoblock car amplifier has a deceptively small form factor. You’ll be able to get a big booming sound with a small footprint.

The S1-850’s 900 Watts RMS of Class D power in a single channel subwoofer amplifier offers heavy-duty peak power. This is capable of over 1000 Watts RMS on 16 volts. It’s an unbeatable monoblock amplifier ideal for daily drivers who need more bass from their car stereo system.

The heavy-duty printed circuit board features both thermal protection for high heat situations, as well as speaker protection. Of course, be sure to power-match your subs to the RMS power output for your car audio system voltage.

An on-board low pass filter lets you limit which frequencies are amplified, for ultimate performance out of your sub amp. The subsonic filter helps prevent extreme low-end distortion.

Additionally, an LED clipping indicator on the included bass remote gives you the subwoofer control you need to avoid coil damage! The single-channel S1-850 has 4 gauge set screw power terminals and 10 gauge speaker terminals to pump clean power to your HDS2.2 subwoofer build maintains optimum sound quality and consistent voltage.

This deceptively small beast of a mono amplifier does its job so reliably and efficiently, you’ll want two! If you need more wattage than this budget gem offers, the S1-850 mono amp is strappable to drive dominating bass as you level-up your build!

Additional information

Weight 9 lbs
Dimensions 16 × 8 × 3 in

Default Title

1 review for S1-850 Monoblock Amplifier

  1. mosley.michael3

    I have this amp paired with a Sundown SA12 V2 and it gets the job done on stock electrical in a 2008 honda crv. I like to turn it up a lot too and its still going strong. never had an issue. If you’re looking for a little power for a decent stock alt, this should take care of you.

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ClassClass D
Channels1 channel
Working Voltage8.5 V - 16 V
Maximum Amperage90
Power @ 4 Ohm 14.4V375 Watts RMS
Power @ 2 Ohm 14.4V625 Watts RMS
Power @ 1 Ohm 14.4V900 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)9.8 x 7.8 x 2.2

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