Mamn-7 tube preamplifier circuit
Source: InternetPublisher:偷熊计划 Updated: 2011/12/23
![Mamn-7电子管前级均衡放大电路](http://www.eeworld.com.cn/circuit/upload/538a1bc8a409ff500dc8e0cb6c6d7ecb/6658e1f4-3c64-11ec-a936-086126841eb8.jpg)
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