


American Bass PH-4000 MD Amplifier
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
Subwoofer Wiring Diagram
Select your configuration to view possible wiring combinations.
Loading wiring diagrams…
Diagrams are on our wiring diagram page.
- Compact monoblock subwoofer amplifier rated 2000W RMS @ 1Ω
- Phantom Series design built to fit into tight, confined spaces
- Variable low–pass filter (40Hz–220Hz) with 0–12dB bass boost
- High efficiency for stable performance on demanding low–impedance loads
- 150A fusing — model PH-4000 MD
American Bass PH-4000 MD Monoblock Car Amplifier — 2000W RMS @ 1Ω (PH4000MD)
This Listing Includes:
- (1) American Bass PH-4000 MD Amplifier
The PH-4000 MD is the heavy hitter of the American Bass Phantom Series — a compact monoblock that delivers 2000W RMS at 1Ω while still fitting into surprisingly tight spaces. High efficiency keeps it stable under demanding low–impedance loads, making it a strong choice for a hard–hitting subwoofer build. Authorized American Bass dealer at JS Ultimate Sounds. Free shipping on orders $99+.
Features
- Monoblock subwoofer amplifier
- 2000W RMS @ 1Ω
- Variable low–pass filter: 40Hz–220Hz
- 0–12dB bass boost
- Compact, high–efficiency Phantom Series chassis
Specifications
| Channels | 1 (monoblock) |
| RMS @ 1Ω | 2000W |
| Low–Pass Filter | 40Hz–220Hz |
| Bass Boost | 0–12dB |
| Fuse Rating | 150A |
| Dimensions (L × W × H) | 13.42" × 5.51" × 2.12" |


