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AMB M3 headphone amp

Hello Everyone,

I am selling my AMB M3 build which has served me well throughout the years. It is the standard three-channel build outlined on the website (link) with the following specs:
  • Enclosed in a hifi2000 Galaxy Maggiorato anodized full aluminum casing
  • Analog Devices AD8610ARZ OPAMP for all three channels
  • OPAMP bias current set to 5mA, MOSFET bias to 80mA (can be set with trimpots), gain to 11
  • 24V AMB Sigma11 power supply with custom current regulator diode equivalent circuits
  • Extra large 2.5" heatsinks (originally I wanted to use it also as a small speaker amp)
  • Custom PCBs for the volume, and for the LEDs around it (green and red LEDs, red was supposed to be for speaker output). The ring around the volume knob lights up.
  • The audio input and output cables are pure silver (see the pics).

The amplifier sounds very well, so well, that I designed a fully differential headphone amp based on it. This is the only reason why I am selling.

I am located in Princeton, NJ for local pickup and I could ship it anywhere to CONUS. I prefer payment with PayPal or cash.

Price: 350USD + paypal + shipping

Let me know if you have questions!

Cheers!
 

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