Pioneer’s new extra-efficient Class-D digital amplifiers mark a dramatic improvement in power output capability, yet are 50% smaller than the current GM-Series Class-AB amplifiers. Also, Pioneer's new digital amplifier circuit "Protection Control System" senses its internal temperature and automatically moderates input level. The GM-D8604's speaker level inputs allow you to connect your OEM unit (or any unit that doesn't have the typical RCA-type inputs) without having to buy add-on adapters.
| Specifications | |
|---|---|
| Best Frequency Response | 10-50k Hz |
| Fuse Rating | 60 |
| Low-Pass Crossover Frequency | 40-500 Hz |
| Minimum Impedance Unbridged | 1 |
| Height (inches) | 2-3/8 |
| Depth (inches) | 7-7/8 |
| Low-Pass Slope (dB/octave) | 12 dB/octave |
| Bass Boost | No |
| Input Voltage | 14.4v |
| Power at 2 Ohms (Watts x Channels) | 150 x 4 |
| Width (inches) | 11 |
| Bridged Power (Watts x Channels) | 300 x 2 |
| THD at Rated RMS Power | 1% |
| Bass Boost Frequency | N/A |
| Amplifier Class | FD |
| High-Pass Slope (dB/octave) | 12 dB/octave |
| Speaker Level Inputs | RCA |
| RMS Power Output (Watts x Channels) | 100 x 4 |
| Peak Power Output (Watts x Channels) | 600 x 2 |
| Minimum Impedance Bridged | 2 |
| Signal to Noise Ratio | 75 dB |
| High-Pass Crossover Frequency | 40-500 Hz |
| Fan Cooled | No |
| Preamp Outputs | 1 pair |
This amp has proved to be reliable. It has clean sound.
This was a replacement for a phoenix gold 4 channel amp, 2004 vintage. Clearly the tech advanced significantly since then. Everything about the pioneer is better - it's more powerful, easier to install, has more headroom, uses less power, is lighter and sounds clearer. The small footprint and light weight made installation (in a regular cab F150) easy, the block connectors are easy to use and solid, and the amp is easy to fine tune. At the price point i think it is difficult to beat for a single-unit 4 channel amp.
