This is the BOSS TU-2, a long-selling pedal tuner. Even now, with the successor TU-3 available, it remains a classic, supporting many professional guitarists with its simplicity and excellent visibility. Regarding Manufacturing Date and Reliability Based on the serial number BM10553 on the back of the unit, it was manufactured in February 2003. This product was made during a period when the circuit design and manufacturing processes had reached complete stability. The TU-2 is known for its very robust construction, and although this unit has aged since its manufacture, it can still be used without any problems. Convenient Features of the TU-2 • DC OUT jack: By using a separately sold parallel DC cable, this tuner can supply power to other effects pedals (up to 7 pedals), functioning as a power supply. This is very convenient for saving space on your effects board. • Two Output Types: You can choose between an output that allows you to tune while hearing the sound, and a mute output that silences the sound during tuning. • High-brightness LEDs: The LEDs are highly visible on stage, allowing for quick and accurate tuning even in dark places. Condition of the Product Operation has been confirmed, and the LEDs light up and the mode switching functions properly. There are some minor scratches on the exterior due to use, but there are no practical problems. The label on the bottom is still present, and the serial number is clearly visible. Other Information This listing is for the unit only. Please understand that this is a used item before purchasing. It is being offered at a low price due to the number of scratches. Features of the 2003 TU-2 The TU-2 from this period has the following practical values: • Use as a Power Supply Even compared to today's multi-functional tuners, the TU-2's DC OUT function is excellent. The units from around 2003 have stable internal power lines and are also known for their noise resistance. • Buffer Quality BOSS's proprietary buffer is built-in, which also prevents sound quality degradation when using long shielded cables.