For friends familiar with the local Head-Fi market and products, you may already have an impression of the Pico Audio Origa portable headphone amplifier, known for its replaceable tube design, Hong Kong manufacturing, and excellent midrange and vocal performance. However, it was only produced in very limited quantities, so few could experience it. Now, the Origa FE from Pico Audio can be considered a "mass-produced upgrade," truly a world-first fully discrete, replaceable tube hybrid portable headphone amplifier. What new breakthroughs can it bring based on the original design? Is the sound quality really that appealing? Let's delve into a detailed review.