- Key Specs
- Continuous Watts x Channel @ Ohms: 65 W x 4 x 2 Ohms; 40 W x 4 x 4 Ohms; 130 W x 2 x 4 Ohms
- Number of Channels: 4 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
- Preamp Outputs: false
- General
- Brand: Pioneer
- Model Number: GMA4704
- Product Name: 4-Channel - Class AB, 520w Max Power - Bridgeable Amplifier
- Color: Black
- Audio
- Continuous Watts x Channel @ Ohms: 65 W x 4 x 2 Ohms; 40 W x 4 x 4 Ohms; 130 W x 2 x 4 Ohms
- Maximum Watts x Channel @ Ohms: 80 W x 4 @4ohms, 130w x 4 @ 2ohms, 520w max (This is the maximum load the speaker, subwoofer or amp can drive.)
- Number of Channels: 4 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
- Minimum Frequency Response: 10 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Total Harmonic Distortion: 0.5 percent (Measurement of the harmonic sound distortion. The lower the percentage, the cleaner the sound.)
- Maximum Frequency Response: 70 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Signal-to-Noise Ratio (SNR): 94 decibels (The ratio of the desired signal's strength to the level of background noise. A ratio higher than 1:1, which equates to greater than 0 decibels, indicates more signal than noise.)
- Bass Boost: None (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
- Inputs
- Speaker-Level Inputs: true (Also referred to as high-level inputs. Enables the amplifier to receive a sound signal from another device that does not have RCA, or low-level, inputs.)
- Line-Level Inputs: true (Also referred to as low-level inputs. Enables the amplifier to receive a sound signal from another device via RCA cables.)
- Outputs
- Preamp Outputs: false
- Features
- Fan Cooled: false
- Bridgeable: true (Bridging an amplifier increases the power it supplies to the speaker(s).)
- Dimensions
- Product Height: 2.4 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 8.5 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth: 12.9 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
- Product Weight: 4.4 pounds (The out of box weight of the item.)
- Other
- UPC: 884938340205
Pioneer GM-A4704 4-Channel Bridgeable Amplifier, Black/red. Low-Pass Crossover Frequency = 80 hertz ,High-Pass Crossover Frequency =40-500 hertz.
- Technology of the GM Series: From dramatic distinction to dramatic design, Pioneer's new GM-Series amplifiers are thrillers in every sense, pushing the limits of flexibility and functionality.
- Variable HPF: 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 and 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.
- Technology of the GM Series: From dramatic distinction to dramatic design, Pioneer's new GM-Series amplifiers are thrillers in every sense, pushing the limits of flexibility and functionality.
- Variable HPF: 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 and 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.
Whats Included
- Pioneer GM 520W Class AB Bridgeable Multichannel Amplifier with Variable High-Pass Crossover
- Pioneer GM 520W Class AB Bridgeable Multichannel Amplifier with Variable High-Pass Crossover
Product Manuals
A: If CH A left channel is connected correctly, the amplifier should turn on/off automatically when the headunit (HU) is powered on. However, this function may not work with all HUs, in that case, will use the blue system remote control wire. Finding a source that turns on with the HU is the challenge question. The most likely source would be a remote powered antenna, but not all vehicles are equipped with them.
