This device is in excellent condition. Inputs are noise free and it functions as expected.

See the following description from Providence to learn more about this device.

The Vitalizer BF tightens up the low frequency that tends to be blurred with bass, 7/8 sting guitar, and down tuned guitar.

Active Impedance Converter VITALIZER

The VITALIZER is an Active Impedance Converter that suppresses changes and degradation in sound quality, as well as noise interference, to output a vital, lively, and natural signal.

Passive/high-impedance signals are electrically weak. For example, when using long cables (like 20m) or many true bypass effectors, the sound quality is susceptible to negative influences.

The VITALIZER demonstrates its power in such environments. While the signal after passing through the VITALIZER may seem unchanged at first listen, as its name suggests, it is output in a energetic and lively state, suppressing changes and degradation in sound quality, as well as noise interference.

It is a type of buffer amplifier that converts high-impedance electrical signals—which are prone to sound quality degradation such as high-frequency loss or noise susceptibility when passing through wiring, jack contacts, and electronic circuits—into low-impedance signals that are less susceptible to such influences. Taking into account the signal characteristics of instruments like guitars/basses and effectors, Providence has incorporated its unique ingenuity. This design deliberately avoids an overly Hi-Fi sound, instead focusing on minimizing any so-called "active coloration" and outputting a natural signal that is as faithful as possible to the instrument's original tone.

SPECIFICATIONS

• Terminals : 1/4 inch standard phone jack (input, output), DC9V input jack (AC adapter jack)
• Power : DC9V 006P battery (1), or AC adapter/power supply (sold separately)
• Current Consumption : Approx. 3mA
• Size : 60 (D) × 73 (W) × 43 (H)mm
• Weight : Approx. 100g (main unit only)
• Accessories : Outer battery box (with lid fixing screw) LE-OBB-2, 006P type 9V battery (6F22)