Used Positive Grid BIAS Head Equipped with a 600W high-output power amplifier No crackling It's used, so there are some minor scratches and signs of use, but no noticeable damage There are no problems within the range of sound output that I have tested It's multi-functional and produces a really good sound It's a really fun amp just for being able to produce the sounds of various amps As someone who mainly plays live, I'm not able to fully utilize this amp because it's too multi-functional, so I'm putting it up for sale There are videos of this amp on YouTube, so please refer to them It will be shipped in its original box The only included accessory is the power cable I'm still hesitant to sell it, so if there are no buyers, I'll continue to use it myself Various operations can be performed with an iPhone or iPad I will inform the buyer of the app account and PW later (I am the second owner, but I was unable to change the account from the previous owner's account, so I will inform you of the inherited account) The following is a quote ■ Features Realistic and excellent response modeling amp 600W (8Ω) speaker out (BIAS Head only) Equipped with 5 types of amps (5 banks x 5 presets = 25 presets) Glassy: Sparkling crystal clean tone Clean: Slightly saturated warm tone Blues: 50-60s classic sound Crunch: Distortion that embodies ROCK. High gain and warm lead sound Metal: High-gain saturated sound of heavy metal and loud music Matching the preset amp to the sound of a miked amp or recorded track Full customization at the component level ■ Specs ・Power Amplifier: 600 Watts RMS @ 8 Ohms, 300 Watts @ 16 Ohms ・Voltage and Frequency: 100-240V AC, 50-60 Hz ・Dimension (H x W x D): 7.5 x 12 x 6 in. (314 x 190 x 153 mm) ・Weight: Head 5.9kg (13lbs.), Head DSP 5.3kg (11.7lbs.)