Douk Audio T4 Pro Vacuum Tube Phono Preamp Mm Turntable Preamplifier Ge5654
Pluggable tube socket for tube rolling and sound-shaping, easy to pick from and alter the sound signature to one's preference.,3.5mm headphone output and perfect circuit design: T4PRO also with built-in classic headphone amp circuit(2 NE5532), easily to drive 32-300 ohm headphones.