Free shipping on eligible orders $199.99 and up. Exclusions apply.
Need help choosing compatible equipment? Call (419) 376-6140.
The SounDigital XP 400.4 gives you four channels of amplification in a compact chassis measuring just 4.69 × 4.44 inches. Run four speakers with up to 100 watts RMS per channel at 2 ohms, or bridge the outputs for two channels delivering 200 watts RMS each at 4 ohms.
Adjustable crossovers let you tailor the output to your speakers, while RCA and high-level inputs support aftermarket and factory source units.
User manual: View / Download the SounDigital XP 400.4 User Manual (English PDF)
| Speaker load | 4Ω version |
|---|---|
| 4Ω per channel | 4 × 66 W RMS |
| 2Ω per channel | 4 × 100 W RMS |
| 8Ω bridged | 2 × 132 W RMS |
| 4Ω bridged | 2 × 200 W RMS |
This listing is the 4Ω version: minimum load is 2Ω per channel or 4Ω bridged.
Manufacturer RMS ratings: 14.4 V, 60 Hz, maximum 1% THD.
| Specification | Details |
|---|---|
| Frequency response (−3 dB) | 5 Hz–36 kHz |
| Signal-to-noise ratio | 96 dB |
| Operating voltage | 9–16 V DC |
| RCA input sensitivity | 0.2–2 V |
| High-level input sensitivity | 1.5–15 V |
| Current draw | 17 A music / 34 A maximum |
| Recommended fuse for music | 20 A |
| Minimum external battery capacity | 40 Ah |
| Manufacturer power-cable specification | 10 mm² (7 AWG) |
| Manufacturer speaker-cable specification | 1.5 mm² (15 AWG) per conductor |
| Dimensions (W × L × H) | 4.69 × 4.44 × 2.00 inches |
| Amplifier net weight | 1.28 lb |
Powered by the vehicle’s external DC electrical system; no built-in battery and no battery included. Battery capacity above refers to the external power supply. Follow the user manual for wiring, fusing and setup, and mount the amplifier in a dry, ventilated location.
These guys communicate with me and made sure that everything I received my items and
Very pleased with the results TDS got me sounding great
Got the product quick, and in perfect condition. Can't want to let this amp rip!
Purchase and shipping quick product packaging great... Will repeat customer again thanks guys
Great turn around and sound
SounDigital XP 800.4 4-Channel Amplifier
Brian was absolutely amazing!! Completely i’m out of his way to make sure I could possibly get the product sooner.
Off the charts amazing. Arrived earlier than anticipated.
Bryan was very helpful in answering any questions I had and I will definitely be doing business with him in the future. His products also ship out in a timely manner. Thank you
Excellent service with great pricing and delivery was next day.
I've never dealt with TDS before this purchase, but I have to tell you, Bryan is a great person to deal with, took care of any questions and the quck response, lightning fast shipping can't be beat. Will be my goto person from here on out.
Awesome Product, second to none, Flawless, extremely happy with my purchase.
I ordered a battery that was on backorder and didn't realize. I called and talked to a guy that said they should be here any day. Within 2 hours I received the tracking. I text the guy back to make sure it was accurate and he responded immediately. Great doing business with you guys and will continue to order from you guys in the future
Fast shipping and no issues
TDS great customer service attentive reactive to messages from customers as soon as they receive them great place to shop. I appreciate these guys they helped me out very good.
Great customer service
