# Pioneer GM-A4704 car audio amplifier 4 channels 520 W A/B

**URL:** https://aio.lv/en/product--pioneer-gm-a4704--4638778
**Data updated:** 2025-12-29 17:36 (EET)
**Category:** Car Supplies
**Manufacturer:** PIONEER
**Manufacturer code:** GM-A4704
**EAN:** 4988028340192
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 117.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 97.10 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--pioneer-gm-a4704--4638778

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Pioneer GM-A4704 is a 4-channel car audio amplifier with a maximum RMS output power of 520 W. It features a class A/B design, high pass and low pass filter slope of 12 dB/octave, and comes in a sleek black and red color. Dimensions are 326 mm width, 215 mm depth, and 60 mm height, making it a compact choice for enhancing your car audio system.

## Long description

The Pioneer GM-A4704 is a compact 4-channel car audio amplifier delivering up to 520 W total output in a Class A/B configuration. Designed to fit a variety of vehicle interiors, it combines adjustable filtering and automatic input sensing to expand system flexibility while maintaining a space-efficient footprint.
Advantages
This amplifier offers variable high-pass filter control (40–500 Hz) to match speaker or subwoofer characteristics and listening preferences. It provides strong power in a reduced-size chassis for easier installation, and automatic signal sensing that selects RCA or speaker-level input and switches the amp on with the receiver, simplifying integration with OEM or aftermarket head units.
Suitable for
 Upgrading factory car stereos to improve power and clarity
 Driving front and rear speakers in a 4-channel setup
 Systems that require compact amplifiers for limited installation space
 Installations using receivers without RCA outputs (speaker-level input)
Key specifications
 Brand: PIONEER
 Model: GM-A4704
 Channels: 4 (Class A/B)
 Maximum RMS output (total): 520 W
 Filter slope: 12 dB/octave (HPF/LPF)
 Variable HPF range: 40 Hz – 500 Hz\*
 Color: Black / Red
 Dimensions (W x D x H): 326 x 215 x 60 mm
 MPN: GM-A4704
 EAN: 4988028340192
How to use
Mount the amplifier in a dry, ventilated location that accommodates its compact size (326 × 215 × 60 mm). Connect speaker outputs to the four channels according to the vehicle wiring and apply power and ground connections following the manufacturer’s installation guidelines. If your head unit has RCA outputs, use them for input. If the head unit lacks RCA outputs, connect speaker-level inputs; the amplifier will automatically detect the input type and turn on with the receiver. Adjust the high-pass and low-pass filters to suit your speakers and listening preferences.
Usage recommendations
For reliable performance, ensure proper wiring and secure mounting, use an appropriate fuse on the power line, and set crossover frequencies starting near the speaker manufacturer’s recommended values (use the variable HPF between 40–500 Hz as needed). Allow adequate ventilation around the amplifier to prevent overheating.

## Specifications

| Feature | Value |
|---|---|
| Height | 60 mm |
| Signal-to-Noise Ratio (SNR) | 94 dB |
| Width | 326 mm |
| Depth | 215 mm |
| Product colour | Red, Black |
| Total Harmonic Distortion (THD) | 0.05 % |
| Frequency range | 10 - 70000 |
| Current | 30 A |
| RMS power output per channel (2 Ohm) | 65 W |
| RMS power output per channel (4 Ohm) | 40 W |
| Amplifier class | A/B |
| Low pass filter | Yes |
| High pass filter range | 40 - 500 |
| High pass filter | Yes |
| RMS output power (max) | 520 W |
| Number of amplifier channels | 4 channels |
| Audio RCA inputs | 4 |
| Maximum power output per channel (2 Ohm) | 130 W |
| Maximum power output per channel (4 Ohm) | 80 W |
| Bridged output power (max) | 520 W |
| Variable bass boost | Yes |
| High pass & low pass filter slope | 12 dB/octave |

## FAQ

### How much does the Pioneer GM-A4704 car audio amplifier cost, and is it available for purchase?

The price is 117.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 09.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Pioneer GM-A4704 car audio amplifier be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All PIONEER products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized PIONEER service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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