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PX1000.4D1 Compact 4-Channel Class D Amplifier

PX1000.4D1 Compact 4-Channel Class D Amplifier

Best price now

$316.99at Genius Audio USAObserved at 4:18 PM
Deal: 41% off at Genius Audio USA →

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Our take on the PX1000.4D1 Compact 4-Channel Class D Amplifier

The PX1000.4D1 is a 4-channel Class D car amplifier built for high-output full-range systems. It stays stable at 1 ohm stereo (2 ohm bridged), which lets you run multiple speakers or subs per channel without dropping to a lower-impedance amp. Crossover modes cover high-pass, low-pass and full range from 35Hz to 8kHz at 12dB per octave, and a temperature-controlled fan plus full protection suite handle the heat and fault cases that come with low-impedance loads. Its best new price is $316.99 at Genius Audio USA as of November 3, 2026, with only one store listing it new, so there is no meaningful recent price range to compare against.

Best forSPL builds and competition systemsDaily drivers running multiple speakers per channelOwners who want one amp for front stage and subsLow-impedance 1-ohm stereo or 2-ohm bridged setups
Pros
  • Stable at 1 ohm stereo and 2 ohm bridged
  • Full-range Class D design with high-pass, low-pass and full modes
  • Crossover adjustable from 35Hz to 8kHz at 12dB slope
  • Temperature-controlled cooling fan
  • Protection against short circuit, low impedance, voltage faults, DC offset and heat
Cons
  • Single store listing at $316.99, so little price competition
  • 1-ohm stability demands a strong charging system and wiring
  • No published power ratings or dimensions on the listing
  • Fan adds a moving part that can fail or add noise

PX1000.4D1 Compact 4-Channel Class D Amplifier prices at every store

  • Genius Audio USANew

    In stock

    $316.99Observed at 4:18 PM
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PX1000.4D1 Compact 4-Channel Class D Amplifier price history

Lowest price we've seen: $316.99 on Nov 3 at Genius Audio USA. Tracked across 1 store since Nov 3.

From Genius Audio USA

  • High-power 4-channel Class D full range amplifier for extreme full range car audio systems
  • Stable at 1 ohm stereo (2 ohm bridged) for advanced installations
  • HPF, LPF and FULL crossover modes with 35Hz–8kHz range and 12dB slope
  • Smart cooling fan with temperature control
  • Protection circuitry: short circuit, low impedance, high/low voltage, DC offset, thermal
  • Ideal for SPL builds and high-performance daily drivers
Shipping
Free shipping on purchases over a stated minimum; shipping calculated at checkout.

Specifications

Number Of Channels
4-channel
Class
Class D

Questions and answers

Is the PX1000.4D1 worth it?
If you need a 4-channel amp that holds 1 ohm stereo or 2 ohm bridged, its feature set fits that job. At $316.99 from a single seller as of November 3, 2026, you have no competing price to play against, so compare it with other 1-ohm-stable 4-channel amps before committing.
Can it really run 1 ohm per channel?
Genius Audio USA rates it stable at 1 ohm stereo and 2 ohm bridged. That means each channel can drive a 1-ohm load, or pairs of channels can bridge into 2 ohms. Plan on upgraded wiring and a charging system that can feed the current.
What crossover settings does it have?
Each setup can use high-pass, low-pass or full-range mode, adjustable from 35Hz to 8kHz with a 12dB per octave slope. That covers tweeter protection up top and subwoofer filtering down low.
Does it have a cooling fan?
Yes, it uses a temperature-controlled fan that speeds up as the amp heats up. That helps in tight installs and long low-impedance runs, but the fan is a moving part to keep clean.
What comes in the box?
The listing does not spell out box contents. Expect the amplifier itself; check with the seller about mounting hardware, fuses and the manual before ordering.
When is it cheapest?
Only one store lists it new at $316.99 as of November 3, 2026, so there is no track record of discounts yet. Watch that listing around major sales events.
Where is the PX1000.4D1 Compact 4-Channel Class D Amplifier cheapest?
At Genius Audio USA, for $316.99, 41% off, as of our latest check.