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Month: May 2018

Sabaj PHA1 teardown

Sabaj PHA1 teardown

I have talked about the Sabaj PHA1 headphone amplifier before. Let’s open it this time and see what makes it tick.

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Author DieselPoweredPosted on 2018-05-112018-10-12

Stereo stepped attenuator

Stereo stepped attenuator

I am using a Sabaj PHA1 headphone amplifier with my Sennheiser HD555. The sound quality is OK, but the amplifier gain is too high for the relatively sensitive and low impedance HD555. To be able to use the full volume range, I decided to build a stepped attenuator to reduce the audio signal received by the amplifier.

Continue reading “Stereo stepped attenuator”

Author DieselPoweredPosted on 2018-05-022018-10-12

Recent Posts

  • Noisy phono preamp diagnosis
  • Sabaj PHA1 teardown
  • Stereo stepped attenuator
  • Honeywell HCM-6009 humidifier review and improvements
  • Battery powered window fan prototype

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