Rockford Fosgate T400X4ad Power Series 400 Watt 4-Channel Amplifier
Rated 3.5/5 based on 26 customer reviews

Rockford Fosgate T400X4ad Power Series 400 Watt 4-Channel Amplifier

Available: Out of Stock
  • Our ultra-compact (1.6" x 4.3" x 8.3") Power T400X4ad 4-channel amplifier produces more power per square inch than any other model we make with 400 Watts of POWER
  • Proprietary Constant Power amps are the most powerful on the market, delivering up to 25% more power across all impedance loads (100 Watts x 4 @ 4-Ohm or 100 Watts x 4 @ 2-Ohm or 200 Watts x 2 @ 4-Ohm Bridged)
  • Proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm, making it perfect for hybrid, electric, small cars, trucks, motorcycles, and side-by-side UTVs
  • High-level auto turn-on, CLEAN circuit input/output clip detection, On-board Punch EQ with +18dB boost @ 45Hz and 12dB/octave Butterworth crossover make T400X4ad an impressive POWER house
  • Famous Rockford Fosgate build quality insures that the T400X4ad will handle everything you throw at it!
Wishlist Compare
  • Product SKU: T400X4AD
  • Item Conditon: New
$394.98 $450.95

Rockford Fosgate's Power Series T400X4ad 4-channel amplifier can send up to 100 watts RMS to four separate speakers, or you could use this tiny powerpack to run a couple of subs with 200 watts each. A dual-fan forced air cooling system keeps this sturdy little amp from overheating, so it can play hard for a long time.

Class AD: accurate and powerful

Rockford Fosgate uses their proprietary Class AD amplifier technology, combining the high fidelity of a Class A system with the high efficiency of their special Class D technology, to bring you this ultra-efficient, high-output amplifier. In other words, this compact amp produces more power with less current draw from your vehicle's charging system than most other amps on the road today.

Rockford Fosgate's high-tech solutions yield more power

Power Series amplifiers actively monitor speaker performance using Rockford Fosgate's Constant Power technology. A speaker's impedance naturally fluctuates as it performs, fighting against your amp's output. So, just like your cruise control increases the engine's RPM to maintain your car's speed uphill, Constant Power maintains this amp's output by increasing its internal voltage and current flow when the speaker's impedance rises. This results in up to a 25% increase in the amp's total power output.T400X4ab control panel with clip lights

Easy to set for optimum performance

Rockford Fosgate's C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) setup system ensures your music will sound as clean and powerful as possible. It works like this: play the setup tone on the included test CD, adjust the receiver volume until a red clip light on the amp goes out, then turn the amp gain up until a blue light comes on. It's that simple — your amplifier will be perfectly set to match your receiver's output. When your receiver reaches maximum clean volume, you'll get maximum clean power from your Power amp. At quiet listening levels, you'll hear less background noise and more of your music.

Clip lights

If that blue light turns solid red while you're playing music, the amp's telling you that your source is distorting and you should turn it down, or risk damage to your gear.

T400X4ad input connections (harnesses included)

Product highlights:

  • 4-channel car amplifier
  • 100 watts RMS x 4 at 2 to 4 ohms
  • 200 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
Features:
  • Class ad amplifier design
  • Constant power technology maintains full output power despite impedance changes
  • C.l.e.a.n. Gain setup system includes clip lights and test tone cd
  • Differential input circuitry helps eliminate hum
  • Dual-fan forced induction cooling
  • Variable high- and low-pass filters (50-250 hz, 12 db/octave)
  • Variable punch eq (bass/treble boost: 0-18 db at 45 hz, 0-14 db at 12,500 hz)
More Info:
  • Preamp and speaker-level inputs (quick-connect input harnesses included)
  • Signal-sensing turn-on with speaker-level inputs eliminates need for remote turn-on lead
  • 8-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware not included with amplifier
  • No onboard fuses — when installing multiple amps in a system, an additional 60-amp in-line fuse between the distribution block and the amplifier is recommended
  • 8-5/8"w x 1-5/8"h x 4-5/16"d
  • Warranty: 2 years (extends to 3 years when purchased with a rockford Fosgate RFK8, RFK8i, or RFK4D amp wiring kit)
  • MFR # T400X4AD

Rockford Fosgate's Power Series T400X4ad 4-channel amplifier can send up to 100 watts RMS to four separate speakers, or you could use this tiny powerpack to run a couple of subs with 200 watts each. A dual-fan forced air cooling system keeps this sturdy little amp from overheating, so it can play hard for a long time.

Class AD: accurate and powerful

Rockford Fosgate uses their proprietary Class AD amplifier technology, combining the high fidelity of a Class A system with the high efficiency of their special Class D technology, to bring you this ultra-efficient, high-output amplifier. In other words, this compact amp produces more power with less current draw from your vehicle's charging system than most other amps on the road today.

Rockford Fosgate's high-tech solutions yield more power

Power Series amplifiers actively monitor speaker performance using Rockford Fosgate's Constant Power technology. A speaker's impedance naturally fluctuates as it performs, fighting against your amp's output. So, just like your cruise control increases the engine's RPM to maintain your car's speed uphill, Constant Power maintains this amp's output by increasing its internal voltage and current flow when the speaker's impedance rises. This results in up to a 25% increase in the amp's total power output.T400X4ab control panel with clip lights

Easy to set for optimum performance

Rockford Fosgate's C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) setup system ensures your music will sound as clean and powerful as possible. It works like this: play the setup tone on the included test CD, adjust the receiver volume until a red clip light on the amp goes out, then turn the amp gain up until a blue light comes on. It's that simple — your amplifier will be perfectly set to match your receiver's output. When your receiver reaches maximum clean volume, you'll get maximum clean power from your Power amp. At quiet listening levels, you'll hear less background noise and more of your music.

Clip lights

If that blue light turns solid red while you're playing music, the amp's telling you that your source is distorting and you should turn it down, or risk damage to your gear.

T400X4ad input connections (harnesses included)

Product highlights:

  • 4-channel car amplifier
  • 100 watts RMS x 4 at 2 to 4 ohms
  • 200 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
Features:
  • Class ad amplifier design
  • Constant power technology maintains full output power despite impedance changes
  • C.l.e.a.n. Gain setup system includes clip lights and test tone cd
  • Differential input circuitry helps eliminate hum
  • Dual-fan forced induction cooling
  • Variable high- and low-pass filters (50-250 hz, 12 db/octave)
  • Variable punch eq (bass/treble boost: 0-18 db at 45 hz, 0-14 db at 12,500 hz)
More Info:
  • Preamp and speaker-level inputs (quick-connect input harnesses included)
  • Signal-sensing turn-on with speaker-level inputs eliminates need for remote turn-on lead
  • 8-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware not included with amplifier
  • No onboard fuses — when installing multiple amps in a system, an additional 60-amp in-line fuse between the distribution block and the amplifier is recommended
  • 8-5/8"w x 1-5/8"h x 4-5/16"d
  • Warranty: 2 years (extends to 3 years when purchased with a rockford Fosgate RFK8, RFK8i, or RFK4D amp wiring kit)
  • MFR # T400X4AD

Features & specs


Performance

RMS Power Output (Watts x Channels)

100 x 4

Peak Power Output (Watts x Channels)

290 x 2

Power at 2 Ohms (Watts x Channels)

100 x 4

Bridged Power (Watts x Channels)

200 x 2

Minimum Impedance Bridged

4

Minimum Impedance Unbridged

2

Best Frequency Response

20-20000 Hz

THD at Rated RMS Power

1%

Signal to Noise Ratio

90 dB

Input Voltage

14.4v

Features

Amplifier Class

A/D

Low-Pass Crossover Frequency

50-250 Hz

Low-Pass Slope (dB/octave)

12 dB/octave

High-Pass Crossover Frequency

50-250 Hz

High-Pass Slope (dB/octave)

12 dB/octave

Bass Boost

0-18 dB

Bass Boost Frequency

45 Hz

Fan Cooled

Yes

Fuse Rating

60

Speaker Level Inputs

4 RCA

Preamp Outputs

No

Width (inches)

8-5/8

Height (inches)

1-5/8

Depth (inches)

4-5/16

Parts Warranty

2 Years

Labor Warranty

2 Years

SHIPPING

FREE SHIPPING within the 48 contiguous states in the USA only. Exclusions apply to orders shipping to APO/FPO addresses, Puerto Rico, Hawaii , Alaska and other U.S. territories.  Free shipping is standard shipping.  For all other shipping options please call for more details direct during Business hours Mon to Fri 10am to 5pm EST Tel: 1800 817 8795.

Freight Shipping for large items 
Large or heavy items, including most TVs, require freight shipping and generally take a little longer to be delivered, contact us for delivery estimates. 

Someone must receive the delivery. The freight carrier will contact you to schedule delivery to your door or the lobby area of your apartment or condo. Someone will have to be on hand to meet the driver and sign for the package. Freight deliveries are scheduled for Mon through Fri between 9AM and 5PM. 

What to expect from the delivery driver. This is a large, heavy item, so arrange to have someone else there to help you unpack and install your equipment. The delivery driver will not help you unpack or set up your new equipment, nor will he or she remove your old equipment or packaging. 

Keep all the product packaging. You'll need it if you have to return or move your item.

 

RETURNS POLICY
Thank you for your purchase. We hope you are happy with your purchase. However, if you are not completely satisfied with your purchase for some reason, you may return it to us for an exchange or refund.  Please see below for more information on our return policy.

RETURNS 
All returns must be postmarked within 30 days of the purchase date. All returned items must be in be in brand new and unused condition, with all original tags and labels attached. Please include a full explanation in the email as to why you are requesting the RMA. Shipping and handling charges are not refundable. Crawford's Superstore may deduct the shipping charge from any subsequent refund, even if the original transaction included free shipping.
The return authorization (RMA) is only valid for 10 business days. Crawford's Superstore is not responsible for the return shipping charges, unless the item has a manufacturer's defect right out of the box. In this instance we will provide a return label, the more convenient to the customer.
Returned merchandise that gets lost or damaged in transit is not the responsibility of Crawford's Superstore. It is the buyers' responsibility to insure their package and to file claims direct with the carrier upon the discovery of the problem
Item MUST be in the original factory box, with ALL of the original factory packaging (foam, plastic, labels, stickers, and protective wrappings), an uncompleted, blank, original warranty card, ALL instruction booklets and associated paperwork, and accessories.  We are strictly resellers and not affiliated or authorized dealers for any of the brands we carry.

RETURN PROCESS
To return an item, please email info@crawfordssuperstore.com to obtain a Return Merchandise Authorization number. After receiving a RMA number place the item securely in its original packaging and include your RMA number, Order number and reason for your return, and mail your return to the address we provide you in the RMA.
Please note, you will be responsible for all return shipping charges. We strongly recommend that you use a trackable method to mail your return and insure you package in case your item is damaged in transit. 

TELEVISION OR OVERSIZED FREIGHT
We do not except any returns on Televisions or oversized freight items. We do Guarantee to provide you with a properly working Television & or Oversized Freight item as ordered and expected. Due to the fact that these large items shipping cost are enormous, therefore we cannot accept any returns on these items.
Upon delivery if an item is damaged upon inspection, please refuse the shipment.  Please be aware that a box may be damaged but the TV might be working.  If the driver doesn't want to wait for you to first inspect the TV, then please note on the Delivery note that the TV box is damaged.  Your signature acknowledges that you understand this special return policy, and the condition of the TV meets your expectations and that you understand that you cannot return the TV. Any damaged or defective TVs or Oversized Freight, must be notified in withing to Crawfords Supersore within 3 days of delivery. 

REFUNDS
After receiving your return and inspecting the condition of your item, we will process your return/exchange. Please allow at least 3 to 5 days to process your return.  Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company.

EXCEPTIONS
For defective or damaged products, please contact us at the customer service number 1 800 817 8795 during business hours Mon to Fri 10am to 5pm EST to arrange an exchange or refund .

Please Note

  • A 15% restocking fee will be charged for all returns.
  • Sale items are FINAL SALE and cannot be returned.

QUESTIONS

If you have any questions concerning our return policy, please contact us during Business hours Mon to Fri EST 10am to 5pm at:  1800 817 8795
info@crawfordssuperstore.com