When supply modulation and contour modulation are working in concert, the dynamic range and efficiency of the power amplifier can be further improved.

当电源调制和轮廓调制协同工作时，功率放大器的动态范围和效率可以进一步提高。

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This means that you may use one channel of your power amplifier to power both a subwoofer and a full-range speaker, while maintaining a reason-able load on your amplifier.

这意味着您可以使用您的一个功率放大器渠道权力既低音炮和全频音箱，同时保持一个原因，在你的功放的负载能力。

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And the power amplifier can realize accurately tracking and amplification for ac signals with frequency range up to 1000hz.

功率放大器可以实现交流信号的准确跟踪和放大，输出频率范围可达1000赫兹。

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The TX-NR807 has seven powerful 135-watts-per-channel Onkyo WRAT (Wide Range Amplifier Technology) amplifier sections for high output and low distortion, offering a dynamic power rating of 300 watts into 3 ohms.

ENGADGET: Onkyo TX-NR807 and TX-SR707 receivers keep the updates rolling