According to the introduction of Voice Noble Network, the front stage of melody 1688 is full electron tube. Its high-quality musical expression and high-quality sound table have thick sound reproduction, high density and very clear timbre, so the melody 1688 is good.

The manufacturer of audio equipment, Maidili, came into being in a nostalgic environment. Its products are fine in workmanship, with the sweet and soft voice of traditional electron tubes, natural and true nostalgia and other adjustable tones.