| Model | HQ-200.4A |
| Type | 4-channel Class AB amplifier |
| Power Supply | 8.5V - 14.4V |
| RMS Power at 1 Ohms | / |
| RMS Power at 2 Ohms | 200 Watts x 4 CH |
| RMS Power at 4 Ohms | 130 Watts x 4 CH |
| Frequency Response | 5Hz - 20KHz |
| Signal-to-Noise Ratio (Sensitivity) | 100dB |
| Efficiency at 4 Ohms | 0.86 |
| Damping Factor: | 200< |
| Material Type | Aluminium |
| Low Pass Filter(Variable) | / |
| Subsonic Filter | / |
| Dimensions | 255m x 170mm x 50mm |
| Fuse Rating | 30 Amp x 2 |
| Weight | 3.0kg |
4-channel Class AB pure amplifier
90% of the power amplifiers on the market belong to the power amplifiers composed of the front and rear stages, which are processed by the op amp and then amplified to the power signal to the speaker. The store belongs to the pure signal amplification function, not as a sound quality processing, so it is recommended to use DSP or pre-processing (such as brand CD and EQ) for this 6-way for active three-way or active two-way customers have a lot of convenience and modification costs. This amplifier is a pure post-processing amplifier and does not have a bridging function, so it is not suitable for use with four subwoofers with a bridge push.
The shell is made of all-aluminum alloy thickened material, and the concave and convex surface design grooves dissipate heat faster than the original plane design. The surface details and the material are better. So the cost has also risen, but it is more simple and high
files
The output terminal and power terminal of the post-stage are gold-plated pure copper ports, so that the signal and current transmission are more complete and have good contact. The power amplifier is designed with a short-circuit fuse, which can be protected in time when the power amplifier is overloaded or caused by a short circuit caused by internal parts, so that the vehicle or audio equipment can be safely guaranteed
Since this power amplifier belongs to the pure post-amp signal amplification power, there is no pre-amp processing and tuning function. Each group corresponds to only control the volume level. It is also possible to understand the output power adjustment for each channel. Similarly, the signal input segment corresponds to each channel of the source output. So do active crossover friends figure out the channel control
The 4-channel post-amp amplifier adopts Japan Toshiba triode A1943+c5200 complementary tube.6 groups of tubes with each group of outputs reach 100W-150W, rated power 4 ohms.