This is the Seiren Stringed Instrument Workshop's mobile mini bass, the AMB-100. I purchased it used, but I haven't had many opportunities to play it, so I'm putting it up for sale. It is equipped with a preamplifier with a tuner. There are some minor scratches here and there (as indicated by the red circles in the images), and I was told by the previous owner that there was noise when connected to an amplifier. Unfortunately, I don't own an amplifier, so I haven't been able to confirm this, but the tuner works without any problems. Please understand the condition and refrain from returns. A semi-hard case shown in the photos is included. If you have any questions, please feel free to ask. Thank you.