GEN-X 5-Channel Class D Amplifier | 4 x 130W RMS @ 4-Ohm + 1 x 900W RMS @ 1-Ohm
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
DS18 G4000.5D Full-Range Class D 5-Channel Amplifier
4000 Watts
DS18’s GEN-X Series has a successor, which we would love to introduce. This time, new options with the G series G4000.5D: a car audio amplifier equipped with all the special benefits you expect from DS18’s components!
The experts at DS18 have redesigned the renowned GEN-X series to surpass the expectations of the competitors and enthusiasts in our community looking to complete the system of their dreams.
Our GEN-X Series amplifiers deliver massive amounts of power with unmatched reliability and efficiency so you can trust the heart of your system will never give out.
As a Class D amplifier, the GEN-X series uses power transformers significantly smaller than your average amplifier, making it the perfect size for any vehicle’s custom build: but, what it lacks in size it makes up for in power.
The G4000.5D has a power output of 420W x 2 CH bridged at 4-ohms, 220W x 4 CH at 2-ohms, 130W x 4 CH at 4-ohms: perfect power settings to supercharge any custom build.
Order the G4000.5 to boost your car’s audio today!
Highlights
- Small and powerful design so you can power your subs with great efficiency and power without taking up much space
- Integrated low pass and high pass filter to help you get the perfect response you are looking for.
- High quality terminals that look great and will transfer your power and signal with no loss.
- Included remote knob and cable for fast and easy line attenuation.
- High level inputs for seamless factory integration.
Great For
- Car Audio
- Pro Audio
- Motorcycles
- Hi-Fi installation
- Off-Road
- DIY Projects





Technical Details
| SPECIFICATIONS | |
| POWER | |
| Total Watts (Peak) | 4000W |
| RMS Power @ 4 ohm | 4 x 130W / SUB: 300W |
| RMS Power @ 2 ohm | 4 x 220W / SUB: 600W |
| RMS Power @ 1 ohm | SUB: 900W |
| RMS Power @ 4 ohm Bridge | 2 x 420W |
| AUDIO | |
| Frequency Response | 20Hz-20Khz |
| Signal to Noise Ratio | >90dB |
| Efficiency @ 4ohm | 0.83 |
| Damping Factor | 78 |
| Input Impedance | 22K |
| Channel Separation | 55dB |
| Total Harmonic Distortion (THD) | 0.0001 |
| Low Level Input Range | 0.25-6V |
| High Level Input | No |
| Selectable X-Over | HPF/LPF |
| X-Over Filter Range | HPF:10-250Hz / LPF:50-250Hz |
| Bass Boost Range | 0-12dB |
| Bass Boost Frequency | Fixed @ 45Hz |
| Infrasonic Filter | 10-50Hz |
| Phase Selector | No |
| FEATURES | |
| Amplifier Class | Digital (D) |
| Amplifier Type | 5CH Full Range |
| Number of Channels | 5CH |
| Minimum Impedance | 2ohm St / 4ohm Bridge / 1ohm Sub |
| Led Indicator | Power / Protection / Clip |
| Power Input Terminal Size | 4ga |
| Fuse Size | 160A |
| Remote Level Control | Yes |
| Cooling Fan | No |
| Voltmeter | No |
| Thermal Protection | Yes |
| Over-Load Protection | Yes |
| DC Output Protection | Yes |
| Short Circuit Output Protection | Yes |
| Voltage Input Protection | Yes |
| Clipping Protection | Yes |
| Body Color / Finish | Matte black |
| MEASUREMENT | |
| Overall Length | 12.8" / 325mm |
| Overall Wide | 4.72" / 120mm |
| Overall Height | 1.96" / 50mm |
| Heatsink Length | 10.9" / 278mm |
| Gross Single Unit Weight | 2.2KG |
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.