The SIP-NP1250 it is an SIP broadcasting network power amplifier developed specifically for industry broadcasting users' needs. Supporting 2 SIP lines and adopting advanced high-efficiency power amplifier circuit design, it is a network audio broadcasting device with strong power output and load capacity. The device is equipped with an abnormal operation protection warning function: when the input signal is too strong, the load is too heavy, the temperature is too high, or the line is short-circuited, the indicator light will prompt, ensuring extremely high reliability. Its casing adopts a 2U standard chassis design with an aluminum alloy panel, combining aesthetics and practicality.

Output Power: 80W / 130W / 180W / 260W / 360W / 500W / 600W
Power Supply: AC220V～240V/50～60Hz
Output Modes: 4～16Ω Balanced Output; 70V～100V Constant Voltage Output
Signal-to-Noise Ratio: Microphone: 65dB / Line: 70dB
Auxiliary Output: 600 ohms (Ω), 1V, 0dB
Inputs: MIC1.2: 600～20MV / AUX1.2.3: 15K～150MV Unbalanced
Frequency Response: 80Hz～15KHz
Total Harmonic Distortion: <1% at 1KHz, 1/3 Rated Power
Signal-to-Noise Ratio: Microphone1,2: 66dB / AUX1,2,3: 80dB
Tone Control: Bass: 10dB at 100Hz / Treble: 10dB at 10KHz
Protection: DC Input, Overload, Overheat, Short Circuit
Mute Function: MIC1 Input Overrides Other Inputs
Dimensions: 484×320×88mm

Standard Chassis Design

• 2U aluminum alloy panel with humanized handle design, combining aesthetics and practicality.

Audio Input/Output Interfaces

• 3-line inputs, each channel with independent volume adjustment.
• 1-line output for connecting pure power amplifiers to expand power.
• 2-microphone inputs: MIC1 has priority function with strong cut-in priority; each channel with independent volume control.
• MIC2 channel equipped with auxiliary line input interface.

Tone Control Functions

• Independent treble and bass adjustment, plus master volume control.

Circuit Design & Technology

• Uses field-effect transistors for pre-amplification, traditional transformer triode push-pull circuit for clear timbre.
• Built-in 2-stage active high-pass and low-pass filters for automatic clipping recovery, with complete line safety protection.

Protection Mechanisms

• Abnormality warning function: Indicator lights flash when input signal is too strong, load is overloaded, or line is short-circuited, ensuring high reliability.
• Temperature protection: High-current high-speed fan with low noise and excellent heat dissipation.

Power Output Modes

• Constant voltage output: 70V~100V
• Constant resistance output: 4~16Ω