AT-1400.1d // 1800 Watts RMS Monoblock Car Audio Amplifier

$379.99 Regular price $499.99 Sale price

You Save 24% ($120.00)



The CT Sounds AT-1400.1d Monoblock Car Audio Amplifier will deliver the power you need to destroy the competition in the SPL lanes. Engineered to be the best in its class, the amplifier uses an advanced PCB board featuring Korean capacitors, MOSFET pulse width modulated power supply, high-quality transformers, and cutting-edge inductors. The amplifier comes equipped with a 4-way protection circuitry along with a Diode 5402 & 6A60 for reverse polarity protection.

The plexiglass backing, illuminated LED CT Sounds logo, and white chassis gives this amplifier an unbeatable appearance. Not to mention the amplifier comes with the highly sought-after AT Series On/Off Bass Knob which not only lets you adjust the bass boost but also displays your system voltage.

Variable adjustment controls feature gains, subsonic, bass boost, low pass filter, and phase settings so you can get the exact sound you are looking for out of your amplifier. The car monoblock amplifier is strappable (slave/master switch) so that you can get more power output should your system require it. Whether you’re looking to cause a tectonic disturbance or generate dynamic instability in the atmosphere, the CT Sounds AT-1400.1d has the power to create the sonic explosion you crave.

Quick Facts:
RMS Power: 1Ω @ 12.8v 1400 Watts x 1-Channel
RMS Power: 2Ω @ 12.8v 700 Watts x 1-Channel
RMS Power: 4Ω @ 12.8v 350 Watts x 1-Channel
Power & Ground Input Size: 0 Gauge
Speaker Input Size: 8 Gauge

Technical specifications:

  1. No of channel: 1
  2. Frequency response (-3dB): 10Hz ~ 250Hz
  3. Gain adjustment: 0.2v ~ 5v
  4. Subsonic adjustment: 10Hz ~ 50Hz
  5. Phase adjustment: 0o - 180o
  6. Bass boost: 0dB - +18dB
  7. Signal to noise ratio: 100dB
  8. Damping factor: 180
  9. Minimum speaker impedance: 1Ω(ohm)
  10. Low pass filter: 35Hz ~ 250Hz
  11. Bass level remote control (16.4ft): Yes
  12. Power/Ground wire inputs: 1/0 AWG
  13. Speaker wire inputs: 8 AWG
  14. Operating voltage (-ve ground): DC 12v
  15. Strappable: Yes; Master/Slave switch
  16. Bass knob: AT Series Bass knob included (Remote gain control, clip light indicator, built in voltmeter & push-able on/off switch)


  • 192mm (W) x 56.7mm (H) x 420mm (L)


  1. MOSFET PWM (Pulse Width Modulated) power supply
  2. Soft turn on circuitry
  3. 1 ohm stable mono operation
  4. Thermal, DC offset, overload and speaker short protection inbuilt
  5. Nickel plated tiffany style RCAs, thus low resistance inputs to the amp
  6. LED power and protection indicators
  7. It comes with Remote Bass Knob; therefore allowing you to control power on/off or subwoofer bass level easily
  8. This is a purely Class-D amplifier where the audio amplification is solely controlled by electronic amplifying switches inside; making the gain much more effective and enthusiastic

Customer Reviews

Based on 32 reviews
AT1400.1 awesome amp

Completely blew the Brutus amp away that I was using! Liquified my 8 Meso subs daily and I love it. Worth every penny.

At 1400.1

I've had it a month or so now. It does great on a d2 meso in a 4th order. Sounds clean looks good to so far it's a awsome amp haven't really ran it more then a hour or so stright doesnt get hot at all.

Beautiful looking amp !

I've owned the At900.1 and was very surprised on how well it performed! I decided to go bigger!!

The best car audio

Hi bart sorry so late on the review but just know that you guys are awesome and your son would be so proud that being said i love the product i not only have the tropo 10 bass package but i own the bio 10 d2 bass package and the strato 12" d1 and the meso 12" d2 and im currently waiting on the Exo 12" d2 and i have the at1400.1 and plan on ordering the T1500.1and T3000.1to go with my Exo but you guys have helped me with issues in the past and made it right on my end and for that i am one happy customer and will continue to purchase all my car audio from you guys thank for everything and have a wonderful day.


If you never read a review in your life, this is one that I hope changes your view! From the bottom to the top in chain of command this is truly a customer service team! Not only is the product top notch quality at a budget price, but the customer service is even better! Absolutely love love love the CTSOUNDS team and products! Just cannot say enough! There’s not another car audio company that even comes close!