The library of qinghai province
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d&b audiotechnik Sound Reinforcement System
Grand theatre：
- subwoofer amplifying system and Fill system：xS-series
- Stage foldback system：M-series
- D6、D12 Digital Power Amplifier
- R1+R60 Remoter Control Network
The multi-function hall
- subwoofer amplifying system：xS-series
- Stage foldback system：M-series
- D6 Digital Power Amplifier
- R1+R60 Remoter Control Network
