Package Includes

• Focal Inside Impulse 4.320 Compact 4 Channel Car Amplifier 400 watts
• Focal Inside IW-VW-YISO Adaptation Extension ISO Cable Harness

Compact 4-Channel Digital Amplifier

Give your head unit a breath of fresh air. Head unit amplifiers (whether OEM or aftermarket) soon reveal their limits in terms of power and dynamics. At high volume, they soon saturate and ruin the listening pleasure. To compensate for this and to enable you to get the best out of your speaker drivers, Impulse 4.320 is the ideal solution. It will give your installation a boost without you having to embark on a difficult installation process.

Semi “Plug&Play”, Impulse 4.320 is a miniature 4-channel digital amplifier delivering 4 x 55 Watts.

Impulse 4.320 is the perfect complement for your Focal Integration speaker drivers.

Very Easy To Install And Perfect Integration

Measuring only 67/8 x 17/8 x 25/8" (17.65 x 4.6 x 6.7 cm) Impulse 4.320 can easily be concealed within the dashboard or the center console.

Equipped with high-level (automatic detection feature) and low-level inputs, it is compatible with all head units. Supplied with all fastenings, an adaptor for the head unit’s speaker driver outputs, RCA adaptors for aftermarket head units and power connector, this amp was specially designed to be easy to install. No direct hook up to the vehicle’s battery is required.

An optional ISO connector is available for “Plug&Play” connectivity via the head unit’s harness.

Note: On certain cars, a harness adapter may be necessary.

Technology Issue From FD Amplifiers

The technology used for Impulse 4.320 was inspired by the Performance range’s FD amplifiers.

With an efficiency of more than 90%, Class D amplification has numerous advantages: less heat, low power consumption, low distortion at high volumes, compact... With the Impulse 4.320 amplifier, an unbeatable size/power ratio has been achieved. It delivers 4 x 55 or 2 x 160 Watts RMS at 4 Ohms.

Thanks to the adequate power and the fast attack for realistic and more aerated sound, it will completely transform the sound of your front and rear speaker drivers.

Extremely Versatile

To ensure compatibility with different head units, this amplifier features a 2-channel or 4-channel input selector switch.

Most of all, Impulse 4.320 has been designed to power front and rear speaker drivers. However, it can also be used in a 3-channel or 2-channel mode in order to meet all needs for improving small installations and it can also be used for powering the front speaker drivers and a small subwoofer.

Each pair of channels features an active crossover to adapt the sonic response according to the speaker drivers used. The front channels can be used for wideband speaker drivers or the high-pass filter can be used for frequencies above 75 Hz when only small speaker drivers are used. By avoiding having small speaker drivers reproduce very low frequencies, the sound will have more clarity. The rear channels are equipped with an active crossover (wideband, high-pass or low-pass) and with progressive phase adjustment for powering a small subwoofer or wideband speaker drivers of different sizes.

What Makes The Difference

• Far more powerful than a head unit
• Easy integration within the dashboard
• Compatible with all head units
• Extremely versatile
• Optional ISO connector for semi “Plug&Play” set-ups

Key Points

• Ultra-compact – Easy to install
• Compatible with all head units (OEM and after-market)
• Automatic start-up with your original head unit
• ISO compatible via cable accessories sold separately

Specifications

• CEA power (4 Ohms): 4x55Wrms
• Power max (2 Ohms): 4x80Wrms
• Power bridged (4 Ohms): 2x160Wrms
• Bandwidth: 10Hz / 20KHz
• Minimum THD: 0.02%
• SNR: 80dBA
• Weight: 1.2lbs
• Dimensions: 67/8x25/8x17/8" (175x66.5x47mm)

Focal Inside VW Y-ISO Harness

T-harness adapter for an Impulse amplifier — fits Volkswagen vehicles without factory amp

Inside Upgrade Harness

Focal's Inside system upgrades include new aftermarket vehicle-specific speakers and subs, along with their IMPULSE 4.320 4-channel amp.

• Designed specifically for your vehicle
• Quick and easy Plug and Play installation
• Direct link from the amplifier to your original head unit

Focal also offers a variety of cables and connectors that you may also need

• Extension cables to connect the T-harness to the amplifier. - IW-IMP-EXT150 Extension Cable
• Harness to connect the T-harness to the amplifier and subwoofer(s) - IW-IMP-2.2 AND IW-IMP-2.1 Harness

Check your vehicle compatibility by contacting us or checking the focal inside website.

Compatible Amplifiers

• Impulse 4.320
• FIT 9.660