KHD-4000 Headphone Amplifier Board Desktop Amplifier Board
Note: this is a assembled headphone amp board.
PCB size: 160X76X2MM
Fully symmetrical from input to output.
There is no even-order distortion.
Symmetrical Power supply startup and shutdown, will not hear a “popping” sound .
Full discrete components.
The circuit uses dual FET fully differential input stage is fully balanced, the operating current of eachtube 1MA, the entire input stage current reaches 4MA, and maintained in a pure Class A operation, has the characteristics of high input impedance and low noise.
Voltage amplifier stage is also a standard Class A amplification, operating current 14MA.
Complementary push-pull output stage is followed by the design, and the use of high-currentMJE15032,15033G tube! Can get a good impetus to the current adjusted each tube 120MA.
With high PSRR (power supply rejection ratio).
DC servo circuit, ensure that no DC output protection headphones, headphone special protection packagecoupled with E12, so sit back and relax your headphones!
KHD-4000 headphone amplifier with high voltage (positive and negative 30V DC power supply), high current(per tube 120MA, and reach 240MA tube per channel), a gain of 11, is the ideal companion A / KG headphones.
Headphone amp / desktop amplifier,positive and negative 30V global power supply,High current power output tube (per tube 8A, and reach tube 16A),have the ability to drive 4-600 ohm load.