JL Audio VX400/4i 4-Channel Car Amplifier with Digital Signal Processing — 75W RMS x 4

JL Audio

JL Audio VX400/4i 4-Channel Car Amplifier with Digital Signal Processing — 75W RMS x 4

Name: Singh Electronics
Address: 7003 Steeles Avenue West, Toronto, ON, M9W 0A2, CA
Telephone: +1 (416) 745-1021
Price range: $

$2,069.99

SKU: VX400/4i

UPC: 699440986366

Condition: New

Availability: Special Order - Usually Ships in 3-5 Days

Shipping: Calculated at Checkout

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Descriptions

About: JL Audio VX400/4i 4-Channel Car Amplifier with Digital Signal Processing — 75W RMS x 4

4-Channel Class D Full-Range Amplifier with Integrated DSP, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V

Designed to simplify great audio, every VXi amplifier combines our advanced NexD2™ switching amplifier technology with an integrated, full-featured digital signal processor.

With our second-generation NexD2™ technology, the VX400/4i full-range amplifier outputs up to 75 watts per channel into 4 ohms, or 100 watts into 2 ohms. It can also be bridged into 4 ohms, producing up to 200 W x 2.

The NexD2™ full-range technology in this amplifier is DSP-controlled and features a reduced loop area design utilizing DirectFET™ outputs for outstanding fidelity, very low noise and exceptional efficiency. The amplifier chassis is ultra-compact, with all connections on one side, to greatly simplify installation into tight spaces.

Instead of traditional control knobs and switches, all amplifier adjustments and DSP functionality are configured via a compatible external device (PC, Tablet or Smartphone), with the appropriate JL Audio TüN® Software application installed.

Amplifier includes: Power Connector (for 4 AWG wire), Analog Input/Pre-Out Harness, Speaker Output Harness, 6 ft A/B USB Cable

Features:

Unprecedented, Onboard DSP Tuning Power!

Powerful DSP permits optimizing each channel’s timing, frequency response and output levels, for exceptional sound quality.
TüN™ Software delivers fast and easy setup, at your fingertips. Make all adjustments with a clear interface. Free TüN™ software is available for computers and most handheld devices.

2nd-Gen NexD2™ Switching Amplifier Technology

Advanced, high-speed switching technology delivers reference-grade power and efficiency.
DSP-synchronized power supply and output channels produce world-class sound quality with very low noise and distortion.

Ultra-Versatile Analog and Digital Inputs/Outputs 

Differential-Balanced Analog Inputs accept speaker level signals up to 16V RMS, including those from factory systems. Delivers outstanding noise rejection to prevent alternator whine and other noises.
Optical Digital (Toslink) Inputs permit direct connection of S/PDIF digital sources, bypassing A/D converter. Accepts up to 24 bit/192 kHz input.
Analog and Digital Pre-Outs (pass-through or fully configurable): RCA Pre-Outs (4V RMS Max) and Optical (Toslink) Output at 24 bit/96 kHz
Automatic turn-on options via signal-sensing or DC-offset sensing

JLid™ System Command and Control with Networking Capabilities

Proprietary JL Audio protocol provides control interface and all communication for VXi amplifiers and optional JLid™ accessories, including:

DRC-100 / DRC-205 (Digital Remote Controllers): Offers convenient DSP preset selection and level adjustments from the driver’s seat.
VXi-BTC Bluetooth® Communicator: Adds wireless connectivity for amplifier configuration from a compatible iOS® or Android® device. 

VXi-HUB Optical Network Hub: Provides network connectivity for up to six VXi amplifiers, allowing full-system DRC control and preset selection. Up to two VXi-HUBs can be daisy-chained to control up to ten VXi amplifiers.

Specifications:

Rated Continuous (RMS) Power @ 14.4 V

@ 4 Ω 75 W RMS x 4
@ 2 Ω 100 W RMS x 4
Bridged @ 4Ω 200 W RMS x 2

Rated Continuous (RMS) Power @ 12.5 V

@ 4 Ω 60 W RMS x 4
@ 2 Ω 90 W RMS x 4
Bridged @ 4Ω 180 W RMS x 2

General Specifications:

Frequency Response: 12 Hz - 21 kHz (+0, -1dB)
S/N Ratio, referred to highest rated power (Analog Inputs): 99 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W (Analog Inputs): 80 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to highest rated power (Digital Inputs): 101 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W (Digital Inputs): 81 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω: >100 / 50 Hz
Damping Factor @ 2 Ω: >50 / 50 Hz
THD+N @ Rated Power: <1% @ 2 Ω per Ch.
Input Voltage Range @ RCA Inputs: 200 mV - 16 V RMS
Min.Copper Power / Ground Wire Gauge: 4 AWG wire
Fuse Rating: 40 A (AFS, AGU or MaxiFuse™)

Features:

4-channel car amplifier
75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
200 watts RMS x 2 bridged at 4 ohms
Class D amplifier design with NexD2™ switching amp technology

Digital Signal Processing:

24-bit 96 kHz digital processing
DSP adjustments and settings made via computer, tablet, or smartphone running JL Audio's TüN app via USB, via Bluetooth (tablets and phones) with BTC Bluetooth option
Input routing and mixing
Adjustable gain controls with clip indication
Fully adjustable high-pass, low-pass, and bandpass filters
- Selectable filter slopes (6, 12, 18, 24, 30, 36, 42, 48 dB/octave)
10-band EQ
Phase and polarity control
Time alignment in 0.01 ms (1/8") increments

Connection Features:

Differential-balanced inputs eliminate noise coming from your vehicle's electrical system
Preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input)
- High-level inputs — up to 16 volts RMS (about 60 watts)
- DC offset or signal sensing auto turn-on eliminates need for remote lead
2-channel digital input and output (S/PDIF: up to 24-bit 192 kHz in, 24-bit 96 kHz out)
2-channel analog preamp output (4V RMS)
JLid™ connections for optional Network Hub, Bluetooth Communicator, and Digital Remote Control
USB connection for device running TüN app (6-foot cable included)
Wiring, fuse, and hardware not included with amplifier
- 4-gauge power and ground leads and a 40-amp fuse recommended
9-1/16"W x 2-1/8"H x 6-11/16"D

What's in the Box:

4-Channel amplifier
Power connector
14" Analog Input harness (15-pin D-Sub/6 RCA)
18" ABCD Speaker output harness
6' USB cable (Type A USB on one end and Type B USB on other end)
4 Corner caps
Corner cap tool
2 Silver thumbscrews
2 Black hex cap machine screws
2.5mm Hex wrench
3mm Hex wrench
JL Audio logo badge
Connection Guide
Registration card

Most products include a limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use. Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside manufacturer specifications. For complete warranty terms, exclusions, and claim procedures, please visit our full Warranty Policy page.

Fast shipping across Canada from our Toronto warehouse. Most orders ship within 1–2 business days. Shipping costs and delivery estimates are calculated at checkout. Returns are accepted on eligible items that are unused and in original packaging within our return period. For full details, please view our Shipping Policy and Returns & Exchanges Policy.

Please note that final sale, clearance, open-box, and refurbished items are not eligible for returns or refunds. These items may only be covered under their respective warranty or exchange terms where applicable. For full details regarding open-box items, please review our Open Box Policy.