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4-Channel Bridgeable Amplifier
• 520 Watts Max Power
• Automatic signal sensing and Turn-ON
• Variable high pass filter
• Speaker level inputs
FREE EXPRESS DELIVERY ON ALL ORDERS
A combination of great design and massive power, the GM-A4704 amplifier gives you total installation freedom and no distortion. With a one-body heat sink and gain adjustment of up to 6.5V, you can turn your in-car audio experience into the sound staging environment that you’re looking for. This 4-channel amp allows you to drive multiple speakers and subwoofers, it’s also bridgeable to power a single sub.
VARIABLE HIGH PASS FILTER
Variable HPF (high pass filter) allow for adjustable frequency from 40 Hz to 500 Hz* and greater car audio system flexibility according to subwoofer characteristics and personal listening preference.
GROWING POWER, SHRINKING SIZE
New Pioneer amps brilliantly integrate high-power performance superior to that of previous models in space-efficient sizes for flexibility of installation in various car cabins.
AUTOMATIC SIGNAL SENSING & TURN ON
Pioneer amplifiers automatically select the proper input signal mode, either RCA or speaker level. When the receiver is turned on, the amplifier automatically turns on. When connected to an OEM receiver or a receiver without RCA output and utilizing speaker level output, the amp automatically senses the input mode and powers up in sync with the receiver.
When connected to an OEM receiver or a receiver without RCA output using speaker wire, the amplifier is turned on at the same time as the receiver. Pioneer’s amplifiers automatically detect the input signal and select RCA level or speaker level.
When you buy a Pioneer product, you’re not only purchasing the very you are buying peace of mind. All products listed come with a 12 month manufacturer’s warranty; except brand new Pioneer AVIC products, which come with a 3 Year Warranty. Any warranty repair work should be performed by a Pioneer Authorised Service Centre warranty.
We do not offer an extended manufacturer warranty.
If a product has been delivered to you and you have opened the original product packaging then you have agreed to be bound by these terms and conditions. Returns for refunds will only be accepted within 14 days of receipt of goods. Returned goods must be in their original condition. Shipping and handling costs are not refundable. A restocking fee may apply.
Where the product is not returned within 14 days, Pioneer reserves the right not to accept return of the product, except where the product is under manufacturer’s warranty and you can provide evidence that the product is faulty.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
All products sold on the Pioneer Australia website are brand new. All products include a manufacturer’s warranty.
- General Enquiries – 1800 988 268
- Sales Enquiries – 1800 060 852
- Product Tech Support – 1800 672 102
- Spare Parts – 1800 331 763
- Service & Repairs – 1800 188 397
You can register your Pioneer product by joining our consumer loyalty club – Backstage Pass.
By doing so, Pioneer Australia can then alert you to any news/information regarding your purchase, including firmware or software updates. Moreover, you are then eligible to receive exclusive offers and invitations from Pioneer.
All the latest firmware/software for every Pioneer product can be located on the relevant website product page, under the tab FIRMWARE&SOFTWARE. Alternatively, you can search via the SUPPORT section on this website.
If you purchase directly from the Pioneer Australia website, you are entitled to FREE SHIPPING within Australia – all states and territories.
All purchases are usually delivered via Aussie Air Express; leaving our Melbourne warehouse within 2 working days of receipt of your order. Our sales team processes orders between 9am – 5pm weekdays. Once stock leaves our warehouse, delivery ETA is:
Melbourne – Overnight / VIC regional – 2 days
Sydney/ACT – Overnight / NSW regional – 2 days
Brisbane – Overnight / QLD regional – 2 days
Adelaide – Overnight / SA regional – 2 days
Perth – Overnight / WA regional – 2 – 4 days
Darwin – Overnight / NT Other – 2-4 days
All online orders are despatched from our national warehouse in Melbourne.
You will receive an email notification when your order has been shipped and is on its way to you.
No. All online purchases from the Pioneer Australia website will be delivered directly to you.
|Amplifier Class||Class AB|
|Speaker Level Input||Yes|
|Fuse Rating||30A x 1|
|Bass Boost Remote||No|
|Automatic Signal Sensing and Turn-On||Yes|
|Hi-Volt Input Level Control||0.3V to 6.5V (RCA in), 3.0V to 26V (SP in)|
|Load Impedance Allowance (Ohms)||2 to 4|
|Protection Control System||Yes|
|Dimensions||326(W) X 60(H) X 215(D) mm|
|Continuous Power (RMS) Output @ 1Ω||N/A|
|Continuous Power (RMS) Output @ 2Ω||65W x 4|
|Continuous Power (RMS) Output @ 4Ω||40W x 4|
|Continuous Power (RMS) Output - Bridged @ 4Ω||130W x 2|
|Low-Pass Crossover Frequency||80 Hz|
|Low-Pass Slope (dB/octave)||-12db/oct (A/B CH)|
|High-Pass Crossover Frequency||40 Hz to 500 Hz|
|Bass Boost Frequency||50Hz|
|Bass Boost Level||0/6/12dB|
|Frequency Response||10Hz ~ 70kHz (+0dB , -3dB)|
|Total Harmonic Distortion (THD)||<0.05% ( 10W, 1kHz)|
|Signal-to-Noise (SN) Ratio||> 94dB|