BG7 V1.2

  • PCB - top view

    PCB - top view

  • Loop gain analysis

    Loop gain analysis

  • THD OPS3 20V

    THD OPS3 20V

  • Square wave

    Square wave

  • Sine wave

    Sine wave

  • Triangle wave

    Triangle wave

  • Clipping


  • Slewrate ~46V/us

    Slewrate ~46V/us

  • Stability test

    Stability test

BG7 - old school, very classic front end with j-FET input and single ended voltage amplifier. Huge amount of amplifiers are using exactly same topology.

Soft-clipping VAS adds a bit of flavor into the old design. THD measurements are very good. Lots of dynamics and micro details for sure it is not a boring IPS board, it likes to play music very loud :D

ES series lovers will like it for sure.

Loop gain analysis:






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