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Rockford Fosgate Power T1000-4AD

4-channel car amplifier — 250 watts RMS x 4

Item # 575T10004D

Rockford Fosgate has a well-deserved reputation for building high-quality mobile audio products.

Rockford Fosgate has a well-deserved reputation for building high-quality mobile audio products.

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About the Rockford Fosgate Power T1000-4AD

Rockford Fosgate's Power Series Amplifiers

Rockford Fosgate has a well-deserved reputation for building high-quality mobile audio products. Their Power Series amps occupy the top of the amplifier food chain, with fine-tuned audio controls, extreme durability, and proprietary technologies that deliver stronger, more reliable performance than most other amplifiers on the market today.

Rockford Fosgate's Power Series Amplifiers

Rockford Fosgate has a well-deserved reputation for building high-quality mobile audio products. Their Power Series amps occupy the top of the amplifier food chain, with fine-tuned audio controls, extreme durability, and proprietary technologies that deliver stronger, more reliable performance than most other amplifiers on the market today.

High-grade internal components mean high-power output.

Rockford Fosgate's high-tech solutions yield more power

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

Rockford Fosgate combined analog and switching technologies (Class AD) to produce this highly efficient, full-range amplifier that has very low distortion. It's also stable down to one-ohm per channel, so you can be sure even low-impedance speaker systems will play safely, as well as loudly.

Even heat dispersal for longer life

Dynamic Thermal Management

Power Series amps use Rockford Fosgate's patented, award-winning "Dynamic Thermal Management," a 3-stage cooling system that uses forced air to dissipate heat evenly across the amp and out through the large heatsinks. This results in cooler internal components, higher efficiency, and lower distortion.

Maximum Efficiency Heat Sink Application increases heat transfer away from the transistors MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. This allows the heat to escape more readily from the amplifier, so that the transistors stay cooler.

Extra-quiet inputs

Differential Inputs prevent noise from entering "Differential Input" circuitry helps eliminate any electronically induced noise or hum that could be picked up by the input cables, allowing only clean signals to enter the amplifier. You get more music with less heat and noise in a stylish package that's up to 40% smaller than previous models.

T1000-4ad Power performance

This amp's bigger than its size. Four channels of 250 RMS watts is enough to take most SPL speakers to their extreme limits. Or you can bridge your T1000-4ad to blast 500 watts each to a pair of subwoofers. Either way, you can depend on plenty of clean, powerful sound from your Power Series amp.

T1000-4AD connections

Product highlights:

  • 4-channel car amplifier
  • 250 watts RMS x 4 at 1 to 4 ohms
  • 500 watts RMS x 2 bridged output at 2 ohms (2-ohm stable in bridged mode)
  • CEA-2006 compliant
  • Dynamic Thermal Management cooling system
  • Differential Input circuitry eliminates hum
  • variable high- and low-pass filters (50-500 Hz, 24 dB/octave)
  • variable bass/treble boost (0-18 dB at 45 Hz, 0-12 dB at 12k Hz)
  • optional remote bass/treble boost
  • Class-AD amplifier design with Constant Power
  • preamp inputs and outputs
  • 4-gauge power and ground leads and a 150-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 150-amp in-line fuse between the distribution block and the amplifier is recommended
  • 14-7/8"W x 2-1/4"H x 9-1/8"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # T1000-4AD

What's in the box:

  • 4-channel amplifier
  • Four 1-1/2" Self-tapping screws
  • Installation & Operation manual (English/ French/ Spanish/ German/ Italian)
  • Amplifier Performance Verification Certificate

Customer reviews

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Rockford Fosgate Power T1000-4AD reviews

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Excellent Amp

Lewis from Florida on 9/9/2018

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I am using the T1000-4AD to power two front and two rear 6.5" 4O speakers. As mentioned in other reviews, the amp tends to heat up (zero problems with amp trunk mounted and I live in Florida) so make sure to keep a minimum of 1" of space around the amp for passive cooling. This amp has plenty of power and rock solid performance.

Pros: tons of power high performance differential balanced inputs reliable

Cons: size

Crutchfield response on

0 of 0 found this helpful

Power to spare

Titus from Skiatook, OK on 10/26/2016

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Crystal clear with plenty of power this thing will keep up with lots of bass if your looking to hang with your sub set up I'm running one and the gain is all the way down.. I have two bd 2500 pushing two t213 in a blowthrough 4th order and my truck feels like it's going to blow up when I play in the 30s but this amp keeps up with the highs I'm not done with my front sound stage yet but I got the power to add as many mids and highs as I want with this beast! Focal comp in front and punch 8 in back door im thinking of glassine the doors with some more of the punch pa speakers just to keep up SPL with my lows.

Pros: 4 ,2 or 1 ohm it puts out the same power so you can load it down with tons of speakers

Cons: Wish the offered a six Chanel amp at the moment I'm running my old eclipse ( which was an awesome amp had for like 10 years now ) for my highs and Rf for my mids and low woofers I have a pioneer with 8 ch preout for my head unint so I run it's active cross over

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6 of 6 found this helpful

Perfect Amp for Demanding Components!

pohlevj from Little Falls, NY on 7/29/2016

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I have 2 sets of JBL GTI 660 components in my car, and for anyone who is familiar with this set you know that they can handle tons of power. Each set is rated at 150 w/ch RMS @ 4 ohms & can handle much more. After searching several forums, I realized that to make these speakers really sing that they need to be fed around 200-250 watts per channel. Some people feed them even more than that! So after speaking with Crutchfield support, they highly suggested the Rockford T1000-4AD. This amp is rated at 250 w/ch but when I received it the birth sheet said 339 w/ch which is totally awesome!! This is also a hybrid class AD amp which helps with the overall fidelity as well as the power efficiency of the amp. After installing everything, I used a multimeter to set the amp gains so that it fed right about 225 watts per channel. I advise everyone to look into this as this is a way better method than setting the gains by ear. I also advise you to make sure you purchase an amp with MORE than the RMS rated wattage of the speakers you are powering. That way you can dial the gains down to exactly where you want them to be and it will put less strain on the amp itself since it won't be maxing out the amps power. In conclusion, this amp was exactly what these speakers needed. The extra wattage made a world of difference in not only the loudness but the overall SQ of the speakers. It is def on the expensive side, but if you have speakers similar to the JBLs then this is a great way to go!

Pros: Accord. to birthsheet total RMS wattage is WAY more than what you pay for; is a class AD amp which combines the benefits of SQ and power efficiency so it's not hard on your elec system; stays fairly cool, small footprint for what it is; sleek look; the terminals for all the wires are inside of the amp which makes installation much easier and neater; is bridgeable so you can use the front 2 ch for components and rear 2 ch for subs, or use it as strictly a sub amp and bridge front and rear chs.

Cons: No onboard fuse so you need to put an additional 150 amp fuse outside the amp to wherever its going; def a bit on the expensive side (but so worth it IMHO); the plastic/acrylic finish is nice but scratches easily.

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6 of 6 found this helpful

Rockford Fosgate Power T1000-4AD

Sasa from Phoenix, ARIZONA on 7/10/2014

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I purchased two T1000-4 ad one to run my 4 tower speakers at 4 ohm and the other one to run my 8 components inside the boat at 2 ohm and I purchased T1500-1bd for my two L7 subs. Amps are really good they put out a lot of clean power at high volume volume. Just make sure you have your amp gains set right. I would recomand either of these amps to anyone. I am JL audio FAN and I always used JL Amps. Only reason I did not use them this time was because my tower speakers needed 200w RMS. Hands down this is an awesome amp and if I do another boat down the road Ill use these amps again. I play music with these amps sometimes 8 HRS straight at 90% volume no problems what's so ever. Keep in MIND I do live in PHOENIX where out side temps reach 110+ and amps are stored where air and water cant get to unless I have fan running. I plan to install small fans to keep them cool. but these last 4 weekends I been using them without fans * hrs straight and AMPs did not clip or over heat. SOOOOOOOOOOOOOOOOoo YES THEY ARE BAD Boys GET THEM u will be happy with them.

Pros: REALLY GOOD AMP, CLEAN POWER, They put out more than 250RMS my Sheet Said 290wRMS at 4 ohm

Cons: I wish amp was little bit smaller because its 15 inches long, Gain Adj are on the side I wish they were facing up it would be easier to adj -- and last thing is HEAT these amps do run HOT so don't freak out. if you touch it and its hot. They run Hotter than new JL Audio AMPS But they do put out TWICE the amount POWER :)

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7 of 9 found this helpful

awesome amplifer

john from tulsa oklahoma on 7/6/2011

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this is a superb piece of equipment honestly the best amp i have ever owned its power delivery is exactly as promised all though it does get warm it continues to perform flawlessly i have this amp feeding all 4 channels to a single Focal K2 PowerT 46 KX 48 18 inch sub pounds super hard the bass is amazing



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9 of 10 found this helpful

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Product Research



Class A/D: The T1000-4ad is a Class A/D amplifier, using dynamic switching frequency control to combine the sound quality characteristics of Class-A with the efficiency of Class-D. This technology allows the amplifier to produce more power with less current draw from the vehicle charging system.

Constant Power: The amp is 1Ω stable and the power output doesn't vary with impedance; 250 watts RMS x 4 at 4Ω, 2Ω, and 1Ω, and 500 watts RMS x 2 (bridged) at 4Ω or 2Ω.

Differential Inputs: Differential input circuitry measures the voltage of both the positive and negative sides of the input signal, then subtracts the voltage common to both conductors (noise), resulting in only the original signal. This allows only clean signal to enter the amplifier.

Cast Aluminum Heatsink: The cast aluminum heatsink dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

Dynamic Thermal Management (DTM): DTM Evenly distributes excess heat across entire amplifier heatsink.

MEHSA³: MEHSA³ (Maximum Efficiency Heat Sink Application-Third Generation) is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. The multi-layer insulated metal MEHSA substrate operates with minimal thermal resistance, spreading heat both downward and outward to quickly dissipate heat from each device across the heatsink. This allows greater power output, enhanced thermal stability, and maximum reliability.

NOMAD: NOMAD (NOn-Multiplying Advanced Decision) is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The unit is protected without limiting sound output unless needed.

DSM (Discrete Surface Mount): In the manufacturing process high speed robotics are used to place 1% tolerance parts and large board traces. DSM improves the efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.

Power and Protection LEDs: The LEDs are located on top of the amplifier. A blue Power LED illuminates when the amplifier is on. A red Thermal LED will illuminates if the amplifier overheats. The yellow Protect LED illuminates if a short circuit or too low an impedance is detected at the speaker connections.


Gain Control: The amplifier has independent gain controls for the front and rear amplifier sections, each is continuously variable from 150mV to 5V.

Crossovers: The amplifier's internal front and rear crossovers have independent controls; each can be set to high-pass, all-pass (full range), or low-pass. The crossover point is continuously variable from 50-500 Hz and the slope is 24 dB/octave.

Punch EQ: Punch EQ works along with the crossover switches, and like the crossovers there are independent front and rear Punch EQs dials. When the crossover is set to low-pass, Punch EQ acts as a variable bass boost; 0-18 dB at 45 Hz. When the crossover is set to high-pass, the Punch EQ acts as variable treble boost, 0-12 dB at 12 kHz. When the crossover is set to all-pass, both the bass and treble boost circuits are active.

2/4-Channel Switch: The 2/4-channel switch changes the T1000-4 between 4-channel and 2-channel input mode. When operating in the 2-channel mode, the amplifier produces 4-channels of output with connections to only the front channel inputs.


Power Connections: The power and ground terminals are nickel plated captive c-clamp wire connectors and will accommodate up to 4-gauge wire. An external 150-amp fuse (not included) must be installed on the power wire. If a wiring kit is used that includes a fuse with a value other than 150-amps, that fuse should be replaced with a 150-amp fuse. The remote turn-on terminal is also a captive c-clamp and will accept wire sizes of 12- to 24-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The 4-channel nickel plated clamp wire connectors will accept 8-gauge to 18-gauge wire. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

RCA Input Jacks: The front and rear RCA input jacks are nickel-plated to resist signal degradation caused by corrosion.

RCA Output Jacks: The RCA output (Pass-Thru) provides a convenient way to daisy-chain an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the amplifier location.

Remote Punch EQ (PEQ): An RJ-45 jack is provided for connecting an optional wired remote PEQ control (item number 575ROCKPEQ). If you use the remote PEQ, the rear Punch EQ control on the amp is disabled, and replaced by the remote.

Note: Previous model (prior to 2007) Punch Bass and Para-Punch remotes will not work with this amp.

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Customer Q&A

1 question already asked

can this amp be connected with 4 sets of components to the front channels powering the 4 doors in parallel end use the back channels britches to power a subwoofer?
[ eddie  Apr 26, 2018 ]
1 answer
Assuming all of the speakers and sub are 4 Ohm impedance, this is possible, yes. Keep in mind; you will not have any fader control between the component pairs when they are wired in parallel to the same amp channels. For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service:
[ Ryan  May 07, 2018 ]  Staff

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