At the pinnacle of performance and innovation, we proudly present the XP line—an impressive evolution in your audio experience. Designed with state-of-the-art technology and enhanced by artificial intelligence, XP amplifiers embody the core DNA of SounDigital innovation, excellence, and precision.
The XP line delivers exceptional audio performance, combining advanced engineering with superior components to ensure reliability and remarkably faithful sound clarity. Its compact and versatile design allows seamless integration into a wide range of applications, meeting diverse needs with efficiency and practicality.
Whether you’re an audiophile or a casual listener, XP amplifiers elevate your audio experience, striking the perfect balance between cutting-edge technology and exceptional quality. With the XP line, hear sound as it was meant to be heard.
XP 400.4 – 4Ω
Power @ 4Ω: 4 X 66 WRMS
Power @ 2Ω: 4 X 100 WRMS
Power @ 1Ω: N/A
Bridge Power @ 8Ω: 2 X 132 WRMS
Bridge Power @ 4Ω: 2 X 200 WRMS
Bridge Power @ 2Ω: N/A
Operating Voltage: 9V – 16V
Current Draw (Music): 17 A
Current Draw (Max): 34 A
Recommended Fuse (Music): 20 A
Frequency Response (-3dB): 5Hz – 36kHz
SNR: 96dB
Crossover HPF: 45Hz – 850Hz
Crossover LPF: 45Hz – 850Hz
THD + N (10% Rated Power): 0.1%
Recommended Battery: 40aH
Power Cable: 7AWG
Speaker Cable: 15AWG
Product Dimensions: 4.69 x 4.44 x 2.0 in
Product Dimensions: 11.9 x 11.3 x 5.0 cm
Thank you
This battery is very strong and don’t take up a lot of space
That Limitless starts my bike up like a brand new bike.
On time nice doing business
I recently purchased a Limitless Auto Lithium battery for my Harley from TDS Car Audio, and the entire experience was outstanding. The price was very fair compared to other places I checked, and the battery arrived much faster than I expected.
The ordering process was smooth, shipping was incredibly quick, and everything was packaged securely. It's refreshing to deal with a company that offers great pricing without sacrificing customer service. If you're looking for a Limitless battery or other quality car audio and power products, I highly recommend TDS Car Audio. I'll definitely be a returning customer!
Fast Shipping
Great shop and Bryan Great to work with
It was a perfect order. I placed my order after hours. Sometime the next morning (Friday before Memorial Day) I received notification that it was shipped and received the tracking number. It was shipped and I received Tuesday, the day after Memorial Day. It was as easy as placing an Amazon order.
I haven’t received the sub yet, I’m still waiting on it and have had no update. I would like to know the status of my order.
Limitless Lithium NanoHDv3 30AH and Battery Charger/Maintainer Combo - NanoHDv3/MTN
Product as described. Super fast shipping. Got it two days.
You guys were awesome. I found the speakers I was looking for. It looks like y’all have a good selection of car audio equipment. I’ll definitely be coming back when I need more things.
They get u wat u need, shipped and out the door had my order with in a couple days
