| SoundXtreme ST-712 12" 4-Ohms Car Audio 1000 Watts Peak Power Handling Woofer Deep Bass 2.5" Voice Coil Shallow/Slim Power SubWoofer 35Hz to 3000Hz Frequency Response | nsiaudio.com | 189 USD | — | — |
| SoundXtreme ST-2500.2 Car Amplifiers 5000W | nsiaudio.com | 179.99 USD | — | — |
| SoundXtreme Car Amplifiers ST-2500.2 5000W 2 Channels Class AB MOSFET Amp 2/4 Ohm Stable with Remote Sub Control | nsiaudio.com | 179.99 USD | — | — |
| Soundxtreme ST-1552 12 Inch Car Audio Subwoofer with DVC Power | nsiaudio.com | 169 USD | — | — |
| SOUNDXTREME ST-5000.1 5000 WATT CLASS D MONOBLOCK AMPLIFIER | nsiaudio.com | 159.99 USD | — | — |
| SoundXtreme ST-2400.5 Five Channel Amplifier 2 Ohm Stable 2400W w/ Remote Subwoofer Level Control | nsiaudio.com | 139.99 USD | — | — |
| SoundXtreme ST-6527BTN 200 Watts Double Din Car Stereo Receiver | nsiaudio.com | 109.99 USD | — | — |
| SoundXtreme ST-W6528ML 200 Watts Double Din 2DIN Car Stereo Receiver HD | nsiaudio.com | 109.99 USD | — | — |
| Soundxtrem ST-1500.2 3000 Watt Power Amp 1/2/4 Ohm Car Amplifiers | nsiaudio.com | 109.99 USD | — | — |
| ST-1052 10 Inch 2200 Watts Max Power for Pair Elite Car Audio Stereo Subwoofer Dual 4 Ohm Voice Coil Configuration Competition 10" Subs Speaker System | nsiaudio.com | 89.99 USD | — | — |
| SoundXtreme ST-250.4 Four Channel Amplifier 2 Ohm Stable 1000W w/ Remote Subwoofer Level Control | nsiaudio.com | 89 USD | — | — |
| SoundXtreme Audio System ST5000.1 Monoblock Car Amplifier - 5000 Watt Amp, 1/2/4 Ohm Stable, Class A/B, Mosfet Power Supply, Remote Subwoofer Control, Subwoofer Amplifier | nsiaudio.com | 89 USD | — | — |
| Soundxtreme ST-2000.1 Monoblock Car Audio Amplifiers 2000 Watts 1 Channel Power Amp with Bass Knob Remote | nsiaudio.com | 84.99 USD | — | — |
| SoundXtreme ST-750.2 Two Channel Amplifier 2 Ohm Stable 1500W | nsiaudio.com | 81.99 USD | — | — |
| Soundxtreme ST-1600.1 Power Monoblock 1 Channel Car Audio Amplifier 1600 Watts Power | nsiaudio.com | 81.99 USD | — | — |
| SoundXtreme ST-1550.1 Monoblock Amplifier 1 Ohm Stable 1550W | nsiaudio.com | 72.99 USD | — | — |
| SoundXtreme ST-X6400BT MP5 7" digital TFT Touch-screen MP5/FM Player Double Din Car Stereo Radio Work with Bluetooth - Support USB and SD Card Slot and USB 2.0 Port | nsiaudio.com | 64.99 USD | — | — |
| Xtremevision 2X Soundxtreme ST-680 5"x7" / 6x8 in 3-Way 350 Watts Coaxial Car Speakers 4-Ohm and 2X Soundxtreme ST-694 6"x9" 4-Way 520 Watts PEI Dome Tweeter Coaxial Car Audio Speakers | nsiaudio.com | 64.99 USD | — | — |
| SoundXtreme ST-1000.2 Car Amplifier 2000W Power | nsiaudio.com | 64.99 USD | — | — |
| SoundXtreme ST-694 Systems NX694 Car Speakers 520 Watts 6 x 9 Inch, Full Range, 4 Way | nsiaudio.com | 56.99 USD | — | — |
| SoundXtreme Premium Elite ST-410 10 Inch Car Audio Subwoofer 1500 Watts Max Power Dual 4 Ohm Voice Coil High Power Bass Surround Sound 10" Sub Speaker System | nsiaudio.com | 54.99 USD | — | — |
| ST-412 12 Inch 2000W | nsiaudio.com | 54.99 USD | — | — |
| SoundXtreme ST-AP7 1/2 Din Car Audio Digital Bass Control Processor | nsiaudio.com | 54.99 USD | — | — |
| SoundXtreme ST-X300 3 Way Electronic Car Stereo | nsiaudio.com | 49.99 USD | — | — |
| Soundxtreme ST-603 6-Inch 3-Way 350 Watts Maximum Power Coaxial Car Audio Speakers with PEI Dome Tweeter 4 Ohms Impedance, 89 dB Sensitivity, Frequency 65 Hz - 20kHz | nsiaudio.com | 48.99 USD | — | — |
| SOUNDXTREME 7 Band Passive Stereo Graphic Equalizer with Fader Control ST-EQ-180 | nsiaudio.com | 44.99 USD | — | — |
| Soundxtreme ST-460 4x6-Inch 3-Way 440 Watts Peak Power Handling Coaxial Car Audio Speakers CEA Rated with Frequency Response: 60 - 20,000 Hz / 4 Ohms Impedance | nsiaudio.com | 44.99 USD | — | — |
| SoundXtreme ST-650C 1000W 6.5-Inch 2-Way Car Audio | nsiaudio.com | 43.99 USD | — | — |
| SoundXtreme ST-AP6 1/2 Din Car Audio Digital Processor, 13.5V, Bass Maximizer & Sound Restoration w/Includes a dash mount remote control and Light display, 10.4x2.3 x 8.6 inches | nsiaudio.com | 42.99 USD | — | — |
| SoundXtreme ST-EQ755 1/2 Din 7 Band Car Audio Parametric Equalizer EQ with Front, Rear + Sub Output 8 Volt RMS Three Stereo RCA Output Built-in Input AUX / DVD Select Switch | nsiaudio.com | 34.99 USD | — | — |
| SoundXtreme Digital Bass Machine Processor ST-AP5 | nsiaudio.com | 33.99 USD | — | — |
| SoundXtreme ST-928BT in-Dash Car Receiver Bluetooth MP3/AM/FM/USB/AUX/SD + Remote | nsiaudio.com | 32.22 USD | — | — |
| SoundXtreme ST-912BT Digital Media Receiver Bluetooth | nsiaudio.com | 26.99 USD | — | — |
| SoundXtreme ST-915 in-Dash Digital Media Receiver with Bluetooth and FM/USB/AUX/SD | nsiaudio.com | 26.32 USD | — | — |
| St-1600.1 | nsiaudio.com | 0 USD | — | — |
| ST-2400.5 | nsiaudio.com | 0 USD | — | — |
| ST-3600 | nsiaudio.com | 0 USD | — | — |
| ST-412 | nsiaudio.com | 0 USD | — | — |
| ST-6527BT | nsiaudio.com | 0 USD | — | — |
| ST-1250 | nsiaudio.com | 0 USD | — | — |