HP-2 Headphone Amp which is all state of

which is all state of the art

and the like

Optimized PCB layout with copper planes and pours to minimize parasitics

the TO-99 (metal can) version is soldered directly into the PCB whereas the DIP-8 version is socketed

The result shows the buffer outputs only minimal mains-related signal components (which are most likely from the test setup)

HP-2 Headphone Amp which is all state ofInventory Pruning Sale: The HP 2 will be discontinued once the current stock has sold out. The HP 2 is an all DIY, low distortion headphone amplifier. It provides 440 mW into 32 , 660 mW into 50 , and 260 mW into 300 at vanishingly low distortion, and is suitable for driving all in ear monitors and all but the most inefficient planar headphones on the market. With its ample output power and incredibly low distortion, the HP 2 provides a clean sound