Description
Polk PA D4000.4 Super Efficient Class-D bridgeable 4-channel Amplifier - 125 RMS X 4 at 4-Ohms
The PA D4000.4 amplifier is capable of bridging two full-range channels into a single full range channel with higher output power. For instance, one front and one rear channel will increase the output power from 125W per channel to 400W per channel (for a 4 ohm load). The most common hookups for the PA D4000.4 would be four full-range channels, two full-range channels and a bridged sub, or two bridged subwoofers.
Features:
• Low THD, a high signal-to-noise ratio, plus wide bandwidth frequencies make the PA D4000.4 four-channel a superior choice for distortion-free power
• Super-efficient class D design—Runs much cooler than conventional amps
• High-speed MOSFET—Switching power supply
• Front & rear BPF, FULL, HPF switches - Selects full range, high pass filter, or bandpass filter to dial in your speaker blending.
• Channel mode switch (ST/4Ch) - In the stereo position, the amplifier will send the same signal to front and rear channels.
• Stainless steel hardware - Used throughout, it won’t corrode in humid environments
• Toroidal transformers help keep the amplifier’s sleek design under 2-inch tall while ensuring plenty of clean, efficient power.
Specifications:
• RMS Power at 4 Ohms: 125 watts x 4
• RMS Power at 2 Ohms: 200 watts x 4
• Bridged 4 Ohms: 400 watts x 2
• CEA-2006 Compliant
• Includes Wired Remote Bass Control
• Input Sensitivity: 200mV - 6V
• Total Harmonic Distortion: Less than 0.1%
• Signal to Noise Ratio: 105dBA
• Fuses: 1 x 40 Amp & 1 x 35 Amp
• Input Voltage: 10-16 Volts
• 4 AWG wire recommended
The PA D4000.4 amplifier is capable of bridging two full-range channels into a single full range channel with higher output power. For instance, one front and one rear channel will increase the output power from 125W per channel to 400W per channel (for a 4 ohm load). The most common hookups for the PA D4000.4 would be four full-range channels, two full-range channels and a bridged sub, or two bridged subwoofers.
Features:
• Low THD, a high signal-to-noise ratio, plus wide bandwidth frequencies make the PA D4000.4 four-channel a superior choice for distortion-free power
• Super-efficient class D design—Runs much cooler than conventional amps
• High-speed MOSFET—Switching power supply
• Front & rear BPF, FULL, HPF switches - Selects full range, high pass filter, or bandpass filter to dial in your speaker blending.
• Channel mode switch (ST/4Ch) - In the stereo position, the amplifier will send the same signal to front and rear channels.
• Stainless steel hardware - Used throughout, it won’t corrode in humid environments
• Toroidal transformers help keep the amplifier’s sleek design under 2-inch tall while ensuring plenty of clean, efficient power.
Specifications:
• RMS Power at 4 Ohms: 125 watts x 4
• RMS Power at 2 Ohms: 200 watts x 4
• Bridged 4 Ohms: 400 watts x 2
• CEA-2006 Compliant
• Includes Wired Remote Bass Control
• Input Sensitivity: 200mV - 6V
• Total Harmonic Distortion: Less than 0.1%
• Signal to Noise Ratio: 105dBA
• Fuses: 1 x 40 Amp & 1 x 35 Amp
• Input Voltage: 10-16 Volts
• 4 AWG wire recommended
Used Frequently Asked Questions
- What does used mean? Used products may be unused customer returns that are essentially "new" items, or they may be previously installed products that were returned under warranty or during our return policy period.
- What is the warranty? All of our used items come with a 90-day warranty.
- What's it look like? All of our used items are inspected and graded by our returns team at our facilities. They will test them and grade them to one of four standard gradings: Used Open Box, Used Very Good, Used Good, and Used Acceptable. Please see the following descriptions of each grade - also note that if an item falls under ANY of the criteria for a certain grade, even though the rest of the product is better, we will give it the lowest grade.
- Used Open Box An item in perfect working condition. Original protective wrapping may be missing, but the original packaging is intact and in good condition with minor damage possible. Instructions are included.
- Used Very Good A well-cared-for item with limited use, remains in good working condition. The item may show some limited signs of wear,small scratches,cosmetic blemishes. Item may arrive with damaged packaging or be repackaged and could be missing some accessories.
- Used Good The item shows wear from use, remains in good condition and functions properly. May have damaged packaging or be repackaged. It may be marked, have identifying markings on it, have minor cosmetic damage. It may be missing some parts or accessories.
- Used Acceptable The item is fairly worn but continues to function properly. While repackaged; signs of wear can include aesthetic issues; scratches, dents. The item may have markings on it or show signs of previous use. Item may be missing some parts or accessories.
- Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.