※For those considering a purchase, please read the profile before proceeding. MAXON SD9 sonic distortion Black Label Made in Japan michael landau Scott Henderson Daisuke Kunita Yoshiaki Imahori strymon ZUMA Battery operation confirmed No crackling or unusual noise. Switch sensitivity is good. (Many units of this type require a knack to press the switch. Many people are aware of this, and similar opinions can be found online.) Condition of the exterior: Please check the images. As this is a vintage item, please refrain from purchasing if you do not understand or are overly sensitive. If you have any questions, please ask them before purchasing.