【Important Notice: Year-End Limited Price】 Prices have been revised due to year-end inventory. This price will end on Tuesday, December 31st. If the year changes, this item will be removed, and there is no plan to relist it. If you are considering a purchase, please make your decision as soon as possible. This time, we are offering a one-of-a-kind masterpiece: a 1986 Japanese-made vintage BOSS "SD-1 Super OverDrive," the company's best work, with a superb modification by **"Hot Rod Mod, a well-known master craftsman from Ehime."** We confidently recommend this to those who haven't been satisfied with the current normal models, Waza Craft, or normal vintage items! Features and Sound of This Unit Based on a "good-sounding" 1986 unit, this unit has achieved high potential to meet the needs of modern professional use without compromising its original quality. The modification by Hot Rod Mod has achieved the following dramatic spec upgrades: * Enhanced low-frequency thickness/range: The low-frequency weakness of the SD-1 is tightly reinforced. With a firm sound, it has evolved into a "very usable sound" as a booster. * Excellent picking response: The responsiveness to guitar volume control and picking nuances has dramatically improved. Delicate expression like a direct amp connection is possible. * Thorough low-noise performance: While retaining the warmth of the vintage sound, it achieves a high level of low-noise performance that is reliable in studio and live environments. Reliability of Hot Rod Mod Hot Rod Mod's modifications are used by top musicians active in professional settings. * Mr. Ichiro of the Tsuyoshi Nagabuchi Band * The late Mr. Toshihiro Sumitomo (Savoy Truffle) * Mr. Ogan-chan, bassist of the Chris Duarte Band Condition and Notes * Manufacturing Year: 1986 (Made in Japan) * Operation: No scratchy noise or any malfunctions. Operation is extremely good. * Special Notes: From the time of acquisition, 4 screws on the back cover are missing and are held in place with tape. There is no problem with playing, but if you are concerned, please prepare substitute screws. Please purchase only if you understand this point. We request transactions on a no-claims, no-returns basis.