• These commercial threads are for private transactions. diyAudio.com provides these forums for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members, use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

Group Buy for: The Journey of DIY No-Feedback Class D Amplifier (1)Subtitle: The Motivation and Story Behind It

To power the amplifier, I prefer to use two 48V switching power modules with PFC, each capable of a maximum output of 350W. Any comments?
 

Attachments

  • IMG_4639.jpeg
    IMG_4639.jpeg
    1.1 MB · Views: 33
  • Like
Reactions: flmhhh
The result of using 92 high-precision thin-film resistors is a 23-step stepped attenuator. Both left and right channels have balanced inputs, with a matching 5K ohm input impedance.
 

Attachments

  • IMG_4686.jpeg
    IMG_4686.jpeg
    414.7 KB · Views: 27
  • IMG_4684.jpeg
    IMG_4684.jpeg
    368.9 KB · Views: 28
  • Like
Reactions: flmhhh