JL Audio VX400/4i

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.

Rated Continuous (RMS) Power @ 14.4 V@ 4 Ω75 W RMS x 4@ 2 Ω100 W RMS x 4Bridged @ 4Ω200 W RMS x 2

Rated Continuous (RMS) Power @ 12.5 V@ 4 Ω60 W RMS x 4@ 2 Ω90 W RMS x 4Bridged @ 4Ω180 W RMS x 2

General SpecificationsFrequency Response12 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 HzDamping Factor @ 2 Ω>50 / 50 HzTHD+N @ Rated Power<1% @ 2 Ω per Ch.Input Voltage Range @ RCA Inputs200 mV - 16 V RMSMin.Copper Power / Ground Wire Gauge4 AWG wireFuse Rating40 A (AFS, AGU or MaxiFuse™)

Physical SpecificationsHeight (H)2.12 in / 54 mmWidth (W)9.02 in / 229 mmDepth (D)6.62 in / 168 mmNet Weight5.0 lb / 2.27 kg