This price is a two-channel price, a two-channel structure
Size: 155*70*1.6MM 1OZ copper spray tin process, FR4 sheet A grade
HM2S reference KELL KSA50 50W pure class A post-amplifier circuit design, reasonable routing, no application of a piece of ground wire, improve signal-to-noise ratio.
Making small points:
The input differential tube recommends heteropolar pairing. The minimum requirements can also be paired with the poles. The remaining tubes can be unpaired.
This version is positive and negative 50VDC input. When the pure class A is set, the current is large and the heat is large. Please select the mica plate for insulation treatment.
This version of the power tube package reference is ON (Anson US) plastic tube 0281-0302, the general BJT type power pin position is the same, it is recommended to use the other brand tube, proofread the order of the lower foot.
Sound characteristics: KELL&39;s voice is more like a rice system, a little healthy and uplifting performance
Note: This is a bare PCB and does not contain any equipment.![HM-2S](https://ae01.alicdn.com/kf/HTB1O0T9N4jaK1RjSZKzq6xVwXXaI.jpg)
![HM-2S-1](https://ae01.alicdn.com/kf/HTB16ILMNVzqK1RjSZFCq6zbxVXaM.jpg)
![HM-2S-2](https://ae01.alicdn.com/kf/HTB1inTSNZfpK1RjSZFOq6y6nFXah.jpg)
![HM-2S-3](https://ae01.alicdn.com/kf/HTB1GbnHNYvpK1RjSZFqq6AXUVXaS.jpg)
![HM-2S-4](https://ae01.alicdn.com/kf/HTB12MfNN3HqK1RjSZJnq6zNLpXaS.jpg)
![1](https://ae01.alicdn.com/kf/HTB18wCbbtjvK1RjSspi763EqXXav.png)