Professional digital Hi-Fi high-power dual-channel/four-channel power amplifier, effortlessly driving 15-inch speakers with powerful bass, ultra-slim design, delivering ultra-high-definition sound quality for an ultimate auditory experience.
Lightweight Portability and Reliable Safety
- 4CM slim body design Hi-Fi bass power amplifier for easy portability.
- Built-in powerful protection: Ten-layer intelligent soft-start protection ensures safer, more stable, and more secure use.
High-Fidelity Sound and Intelligent Technology Support
- High-fidelity audio output: Utilizes Class D circuits to deliver pure sound quality and lossless audio.
- Built-in multiple advanced intelligent chips for enhanced all-in-one performance.
- Digital amplifier with PFC stabilized switching power supply provides strong performance, ensuring normal operation even at low voltage.
Efficient Cooling and Multi-Device Parallel Expansion
- Powerful air cooling: Intelligent tunnel-style turbine cooling system prevents internal components from overheating.
- Supports parallel expansion with multiple amplifiers: Can connect and use multiple amplifiers simultaneously through the rear panel interface.
Applications
The SISCO 2 channel/ 4-channel HiFi bass power amplifier is a versatile device, ideal for stage performances, wedding ceremonies, conference speeches, and home entertainment. With its lightweight 4CM slim body design, it is portable and easy to use. Equipped with high-fidelity Class D circuits, it ensures pure, lossless sound quality and supports parallel connection of multiple amplifiers for greater flexibility. Its advanced cooling system prevents overheating, while intelligent chips ensure stable and reliable operation for a seamless audio experience.
Stage Performance
Conference Speech
Wedding Ceremony
Family Entertainment
| Model | SISCO-PA-KS2500 |
| Classes | Class D |
| Category | Dual-channel/four-channel digital professional amplifier |
| Rated Output Power (8Ω) | 850W*2(dual channel), 850W*4(four channel) |
| Audio Frequency Response | 20Hz-20kHz+/-0.25dB |
| Total Harmonic Distortion | <0.005% |
| Transient Response | 50V/us |
| Signal-to-Noise Ratio | ≤112dB (A-weighting) |
| Damping Coefficient | >1000 |
| Conversion Rate | Channel crosstalk |
| Separation | 50V/us |
| Input Sensitivity | 0.775V |
| Input Impedance | 30kΩ balanced |
| DC Residual | <5mV |
| Input Port | XLR input port |
| Output Port | Speaker XLR port |
| Size | 480mm*380mm*45mm |
| Weight | Dual channel(4.55kg), four channel(5.50kg) |
| Operating Voltage | AC220V+10%, 50Hz |
| Maximum Output Voltage/Current | 100 Vpeak/50 Apeak |
| Power Supply | Standard switch mode (power factor correction) technology |
Details
Dimensions (mm)
Q1: What is gain in a power amplifier?
A1: Gain in a power amplifier refers to the ratio of the amplifier's output signal power, voltage, or current to its corresponding input signal. It is typically expressed in decibels (dB) and indicates how much the amplifier boosts the strength of the input signal. Voltage gain, for example, is calculated as the ratio of the output voltage to the input voltage, often represented logarithmically as 20 log10 (Vout / Vin ). A higher gain means the amplifier can produce a stronger output signal for a given input. However, excessive gain can lead to distortion or instability, so it must be managed carefully to ensure the output signal remains clear and true to the input while achieving the desired amplification.
Q2: What is the difference between voltage amplifiers and power amplifiers?
A2: The primary difference between voltage amplifiers and power amplifiers lies in their purpose and output capabilities. Voltage amplifiers are designed to increase the voltage level of a signal, emphasizing signal amplitude without necessarily driving large currents or powering loads. They are typically used in preamplification stages to boost weak signals for further processing.
In contrast, power amplifiers focus on delivering sufficient power (a combination of voltage and current) to drive heavy loads, such as loudspeakers. Power amplifiers take the amplified signal from voltage amplifiers and strengthen it to provide the energy required for real-world applications, like sound production. Essentially, voltage amplifiers handle signal preparation, while power amplifiers ensure that signal can drive a load effectively.
Q3: What are amplifier classes (Class A, B, AB, D)?
A3: Amplifier classes refer to the design and operation methods of amplifiers, each with distinct characteristics in efficiency, linearity, and power handling. Class A amplifiers operate with a constant current flow through the output transistors, offering excellent linearity and sound quality but low efficiency due to high heat generation. Class B amplifiers improve efficiency by using two transistors that each handle half of the waveform, but this can cause distortion at the waveform crossover point. Class AB combines elements of A and B, with slightly overlapping transistor operation to reduce distortion while maintaining better efficiency than Class A. Class D amplifiers, often called digital amplifiers, use high-frequency switching (pulse-width modulation) to achieve extremely high efficiency and compact designs, making them popular for portable and high-power applications, though they may require additional filtering for audio fidelity. Each class balances trade-offs in performance, efficiency, and complexity based on the application.
Tips: how does a power amplifier work?
A power amplifier works by taking a weak input signal, usually from a preamplifier or audio source, and amplifying it to a level sufficient to drive a load, such as a speaker or another high-power device. It achieves this by using power transistors or similar components that modulate a higher power source (from a power supply) in proportion to the input signal. The amplifier's circuitry ensures the output signal is an accurate, amplified reproduction of the input, while also maintaining impedance matching with the load for efficient power transfer. Depending on its class (e.g., A, B, AB, D), the amplifier optimizes efficiency, linearity, and heat management to ensure clear, undistorted output while meeting the specific requirements of the application.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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