Thank you for viewing. This item was acquired used a long time ago. Upon researching it for this listing, I found that this product: * Has a straight body * Is equipped with an LM308N chip * Pot date is 1379106 → Manufactured in 1991 (according to online information) Based on this, I believe it's a USA-made RAT2. However, the serial number, which would normally be on the back, has been cleanly removed, so I can't definitively confirm this. The unit itself functions correctly, and fortunately, there seems to be no crackling. I played it again after a long time, and it was the nostalgic RAT sound. I have confirmed operation via an external AC adapter (using a conversion cable) and with a 9V battery. The plastic on the LED section of the top panel is cracked, and the LED is protruding... I believe this is due to the aging and hardening of the plastic sheet. This listing includes the main unit and the DC conversion cable. As this item may have a slight premium, and to prevent any potential swapping, please understand and agree to the "no returns, no claims" policy before considering a purchase. Immediate purchase is welcome. I will ship the item on the same day of purchase, or at the latest, the next day. Thank you.