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CT Sounds CT-400.1D Compact Car Amplifier
CT Sounds engineered the CT-400.1D Monoblock Car Audio Amplifier for those looking for a reliable, efficient, and compact car amplifier that won’t destroy your wallet. This 400 watt car amplifier class d is built with a MOSFET power supply, high-quality capacitors, advanced transformers, and cutting-edge inductors allowing for maximum current flow and power output making this 1-ohm stable amplifier extremely efficient.
Bring your bass alive!
CT Sounds designed the CT-400.1D car monoblock amplifier for anyone in need of a 400-watt mono amp that fits just about anywhere in your vehicle without having to sacrifice power. The user-adjustable controls feature a Gain Control, Low Pass Filter (LPF), Subsonic Filter, and Bass Boost so that you can get the exact sound you are looking for out of your mono amplifier. If you want a monoblock car amplifier that absolutely pounds and delivers clean power to your subwoofers then look no further than the CT-400.1D.
Colton
Reviewed in the United States on February 18, 2025
Does pretty good with the 8in ct hydro I have it powering. I have no idea what others are talking about on how it doesn’t work under a certain temperature. It was around 20 outside when I wired it up, instantly worked, it was under 20 this morning when I started my car and it worked just fine. I’m used to loud subs so it and the sub don’t really fit what I’m wanting in the long run, I think I should’ve ordered the 2ohm hydro instead of the 4 so I could’ve wired it for 1ohm instead of only being able to drop to 2ohm to get more of what I’m wanting, but for replacing the factory sub and amp with this amp and the 8in hydro, it’s definitely worth the money Id think so I’m not upset. I’d buy again.
A.T.
Reviewed in the United States on January 1, 2025
Over 14.7 Volts mine stayed in protect. Meaning every time I started my vehicle while the alternator is charging the battery. This obviously could be vehicle specific. It works well when it's on. I exchanged mine for the 700 model. It has no issues and sounds great.
Michael A
Reviewed in the United States on November 16, 2024
Mine is hooked running a 8 ohm dvc 10 inch and it's too much! Time to up my subwoofer game, huh? Love this damn amplifier.
MARTIN
Reviewed in the United States on November 11, 2024
Handles my DVC 8" subs very well.
CREE
Reviewed in the United States on June 5, 2023
This little Amp is no slouch, can't belive its 400 watts! Been doing car audio for quite some time...and this amp for the price is amazing. The build quality is definitely on point, its definitely got some weight to it. very small and compact can go just about anywhere. It's definitely a little power hungry...I almost regret not installing 1/0 gauge power cable and just using reducer at the amp but it's only 400 watts. Got this running 2 CT tropo 6.5s at 1 ohm and the overall setup DOES NOT Disappoint!My only Gripe (or Gripes) would be the bass knob is trash. Very cheap lightweight plastic, I feel like if you just look at it wrong it will break. I didn't even mount the knob because I'm afraid a Tab would bust off while screwing it down. It also has a power LED on the knob which is a blinding blue...I can't even look at it straight on with out it leaving a weird blue fuzz in my eyes for an hour.Other than that, awesome amp, awesome price...I look forward to getting another and strapping them to 4 6.5s 👍
Dean
Reviewed in the United States on September 19, 2022
The CT-400.1D may be the perfect amp.Size, power, features and settings, and theCT line of amps are very nice looking also.Check the amp dyno videos online, you won'tbe disappointed.Customer service is top notch, excellent communication.I installed my amp with too little wire inserted into theamp the first time and it was going into protect modebut that's on me.
JOHN LUCERO
Reviewed in the United States on July 27, 2022
Great price. Works awesome. Even overpowered for my sub. Had to adjust gain down to match subs wired in series at 8 ohms (better to go up in my situation than down) 1 ohm would be way to much power for my speakers. Plays awesome. Have plenty room to go bigger. Lol
Justin S.
Reviewed in the United States on March 28, 2022
Yeah, you read the headline right. This amp does not work when it is cold. It never dropped below 60f in my garage, but that was enough to put it in Protect mode until I got the inside of my car hot. Reading other reviews and I see other people mentioning the same thing. Ended up returning it and buying a Kicker amp for twice the price.
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