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Aerpro FP8558K
Aerpro FP8558K Complete Installation Kit Original price was: $1,364.99.Current price is: $1,160.24.
Brand: JBL Audio at Bankstown Sound

JBL Audio Stadium 4 4-Channel Amplifer


The JBL Stadium 4 4-Channel Car Amplifier is an outstanding car amplifier focused on performance, utility and installation. Running at 120WRMS x4 at 2Ω any speakers in your system will be well looked after.

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GTIN: 50036347037 SKU: STADIUM4 Category: GTIN: 50036347037
4-channel car amplifier

JBL Stadium 4

Amp technology has come a long way since a nice 4-channel amp would take up most of your trunk. the JBL Stadium 4 four-channel car amplifier can deliver 120 watts RMS per channel to your front and rear speakers — serious power from a compact chassis that fits easily into most vehicles. Or, you can power front speakers with 100 watts RMS each, plus a subwoofer with 240 watts RMS from the amp's bridged rear channels. Variable high and low-pass filters optimise the amp's output to your speakers or subs, increasing the efficiency of the system.

You can use this amp's preamp outputs to connect to a subwoofer amp, like the matching JBL Stadium 1000, so your system will have plenty of low-end punch — a remote output connection on this amp will even turn on your sub amp. The Stadium 4 can accept low or speaker-level inputs so it'll work in almost any system, and JBL includes RCA-to-speaker wire adapters for your convenience. They've also included their proprietary electrical anti-rotational locking (E.A.R.L.) ground terminal, for a more conductive and secure ground connection for the amplifier.

What's Speaker-Level Input?

Traditionally, car amplifiers needed the head units that drove them to have RCA pre-outs to provide the sound signal. With the advancement of technology and the efforts car makers are putting into the design and integration of media centres into our cars, changing out the head unit isn't always the best, or most cost effective choice.

Speaker-level inputs allow the amplifier to integrate seamlessly to factory entertainment units to supply more power to higher spec'd after market speakers and subs.

JBL Stadium 4 Specifications

The JBL Stadium 4 is a part of the premium Stadium JBL Audio range. The engineering, build quality, attention to detail and performance of these products is outstanding and on another level.

  • 4-channel car amplifier
    • 100 watts RMS x 4 at 4 ohms (120 watts RMS x 4 at 2 ohms)
    • 240 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
  • separate variable high- and low-pass filters (32-320 Hz, 12 dB/octave) on front and rear channels
  • preamp inputs and outputs
  • speaker-level inputs (speaker wire-to-RCA adapters included)
  • E.A.R.L. ground terminal included
  • wiring and hardware not included with amplifier
    • 4-gauge power and ground leads recommended
  • fuse rating: 30A x 2
  • dimensions: 10-7/16″W x 2-3/16″H x 7-1/16″D
  • warranty: 1 year
  • 4-Channel amplifier
  • Four 30A ATO fuses (2 installed)
  • 4 Bare wire-to-RCA adapters
  • EARL ground terminal (for 4-gauge wire)
  • 3 Flat-head screws (Length 1/2″)
  • Heat shrink tube (Length 1-3/16″)
  • 4 Mounting screws (Length 2-3/16″)
  • 2-pin Remote input (Phoenix) plug
  • Owner’s Manual
Nominal Power (WRMS)



Fast Dispatch and National Delivery

We pride ourselves on super-fast dispatch from our Sydney, NSW location. Every order runs through our stringent dispatch process that we attempt to complete same-day in most cases.

Our delivery partners, Sendle and Australia Post, provide us with almost 100% coverage Australia Wide with the best rates and delivery times.

Shipping Insurance = Peace of Mind

We take an immense amount of pride in what our customers say about dealing with us. That’s why we want to make sure you have as many options as possible in getting your order delivered. At the checkout, you’ll have the option to add shipping insurance (4% of your total) to your order, giving you ultimate peace-of-mind.
can i get this installed?

yes, we can install

In addition to bringing you the best products at the best prices, we're also able to install this for you at our Bankstown, NSW location. For prices, quotes and bookings, you'll need to either give us a call on 02 9708 5444 or an email to for more information.

Head Unit Installation

We can install a new head unit in your car to provide you the best in current technology and safety features. You will have to contact us for an installation quote as the cost of installation is based on the type of car its going into.

Dash Camera Installation

Ensuring your new Dash Camera is installed professionally and discreetly is what we strive for. Wiring your new Dash Camera directly to your car's fusebox and electrical system is the most effective way to ensure flawless performance and operation.

Speaker Installation

New speakers can make such a remarkable difference in the performance of your new sound system that ensuring proper, quality installation and tuning is the smart move. Included is professional spacing, wiring and initial tuning.

Subwoofer & Amplifier Installation

Providing the right, clean power to your speakers and subwoofers can make all the difference in your system. After being in the scene for over 20-years we know what works and how to gain optimal performance from all pieces.

Alarm & Central Locking Installation

Securing your vehicle is something important. You want it done right and securely. Through our range of products, we've got all different levels of product for all different installations.

Sound Deadening & Proofing

There's nothing worse than the dreaded boot rattle after spending time and money on a new system. Deadening your vehicle is a sound investment in the enjoyment of your new system. Just doors, boot lids, or your entire car, we can get it done.
1-5 of 80 reviews
  1. SB

    Very quick delivery. Great product, thank you.

    (0) (0)
  2. WC

    Easy to navigate and one of the best I’ve used.

    (0) (0)
  3. A

    Fast and smooth delivery, was a little worried when I saw they didn’t use Aus Post for their free delivery option. But had no issues and the item has since been installed and working perfectly! Thanks guys!

    (0) (0)
  4. MQ

    Easy to buy online

    (0) (0)
  5. T

    I purchased, a pioneer 9inch car unit. I rang to see if the order could be sent fast tracked asap. Bankstown stereo was very prompt, and the unit arrived in just a few days to Perth WA.
    Very happy. Great service and understanding. Thanks so much. Defiantly will recommend.

    (0) (0)
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