规格：

输出功率（output ower）：210-400W，信噪比（S/N）>95dB，原装对管（original packing pair tube），频率响应（frequency）：10Hz-50KHz，平衡输入阻抗（balance input impedance）20 kΩ，输入灵敏度（input sensitivity）0.775V，重量（weight）15Kg。

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