Here is a DigiTech Vocalist Live 5 vocal harmony and effects pedal with it's Factory owner's manual and Factory power adapter. This unit has been tested and works very well but there are a lot of wear marks on the unit as can be seen in the pictures provided.

Google AI says:

Key Features

• Intelligent Harmony: Generates up to 4-part backing harmonies (adding up to 2 harmony voices to your lead vocal).
• musIQ Technology: Listens to your guitar playing and automatically tracks chords so harmonies stay in key.
• Vocal Effects: Built-in reverb (Lexicon), delay/echo, compressor/gate, de-esser, and pitch correction.
• Guitar Effects: Includes reverb, chorus, and flanger.
• User Presets: 100 programmable memory slots, each with A and B parts for on-stage versatility.
• Hardware: Sturdy black metal chassis with five rugged, staggered metal vacuum footswitches and an easy-to-read LED display.

Connections and Inputs

• Microphone Input: XLR (balanced)
• Line Input: 1/4" (unbalanced)
• Guitar Input & Thru: 1/4" (unbalanced, 3M Ohm impedance)
• Aux Input: 1/8" (3.5mm) mini-stereo jack
• Outputs: 1/4" balanced/unbalanced TRS, XLR balanced
• Headphone Jack: 1/8" (3.5mm) unbalanced stereo TRS

Audio Specifications

• Frequency Response: 30 Hz to 20 kHz
• Sample Rate: 44.1 kHz
• A/D/A Conversion: 24-bit
• Dynamic Range: >102dB (A-weighted, output)

Physical Specifications

• Dimensions: 14.18" (Width) x 8.25" (Length) x 2.08" (Height)
• Weight: Approximately 3.3 lbs (1.5 kg)
• Power Supply: 9 VDC, 800mA