This is the Roland AC-33 acoustic guitar amplifier. The set includes the main unit, the original box, and a third-party AC adapter (12V 1.5A). The original box will be wrapped for shipping. The genuine AC adapter, the PSB-12U, has a voltage of 13V, which is a 1V difference from the one included, but I didn't notice any significant difference when comparing them. Regarding the appearance, this item has been owned by someone before, but it has no noticeable scratches or stains and I think it's in very good condition. (This is the seller's subjective opinion) The original box is quite worn, and I've repainted areas where sticker residue was peeled off. Please consider it simply as packaging material. The "No noticeable scratches or stains" in the [Product Condition] section refers to the main unit, so please understand. I've confirmed the operation of each knob on the GUITAR CHANNEL INPUT guitar input using both the AC adapter and batteries. I've also confirmed the operation of the microphone (dynamic type) on the MIC/LINE CHANNEL INPUT, as well as the AUX IN, PHONES, and FOOT SW. I haven't been able to confirm the LINE OUT as I couldn't think of a way to test it. There is no crackling. A major feature of this unit is the looper function. This is a recording and playback function for approximately 40 seconds, and it's unique to this AC series model. You can record your guitar beforehand and then play along with it. It will be erased when the power is turned off. This unit can also be operated with batteries. Shipping is included. I do not offer reservations, holds, or face-to-face transactions. Also, the person with the strongest intention to purchase will be given priority, even during negotiations. Shipping will be via either [Rakuraku] or [Yuyu] Mercari delivery. Please let me know if you have a preference. Processing will be done after work, so it may take 1-2 days to ship. Thank you for your consideration. For reference, here are some simple specifications: ◆ Dimensions / Weight Width (W) 318mm Depth (D) 223mm Height (H) 243mm 4.7kg (without batteries) ・Speakers: 12cm x 2 ◆ Current Consumption: 490mA ◆ Rated Output ・30W (15W + 15W) with AC adapter ・20W (10W + 10W) with alkaline batteries ◆ Battery life during continuous use (using 8 AA batteries) Approximately 8 hours for both alkaline and nickel-metal hydride batteries That's all.