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1PC 5687(Top) TO 12AT7 12AX7 12AU7(ECC83)(bottom) 9Pin TO 9Pin Tube DIY Audio Vacuum Tube Adapter Socket Converter Free Shipping - AliExpress
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![AUDIO NOTE M7 Single tube 5687 dual channel bile preamp, 1 stereo input, 1 stereo input. The gain is about 17 times. AUDIO NOTE M7 Single tube 5687 dual channel bile preamp, 1 stereo input, 1 stereo input. The gain is about 17 times.](https://ae01.alicdn.com/kf/H92b7e498384146e0b454d9a4d2941bf8G.jpg_640x640q90.jpg)
AUDIO NOTE M7 Single tube 5687 dual channel bile preamp, 1 stereo input, 1 stereo input. The gain is about 17 times.
![AUDIO NOTE M7 5687 tube two-channel bile preamp, transparent sound quality, high analytical power, gain AUDIO NOTE M7 5687 tube two-channel bile preamp, transparent sound quality, high analytical power, gain](https://ae01.alicdn.com/kf/Hf3bfe472db7245fba4b3d0d43bbf90af0.jpg_640x640Q90.jpg_.webp)
AUDIO NOTE M7 5687 tube two-channel bile preamp, transparent sound quality, high analytical power, gain
![Pair: GE JG 5687WA vacuum tubes black plates new old stock General Electric 5687 tubes - Etsy Italia Pair: GE JG 5687WA vacuum tubes black plates new old stock General Electric 5687 tubes - Etsy Italia](https://i.etsystatic.com/7035969/r/il/9714c4/1163283082/il_570xN.1163283082_dzrw.jpg)