Used Maxon AD-9 in great shape. Sounds great, looks great too. 

"Unleash your creativity with the Maxon AD-9 Analog Delay, a compelling blend of vintage warmth and modern reliability that will elevate your soundscape. Designed with precision and crafted for musicians who crave the rich, nostalgic tones of classic analog delays, this pedal offers a seamless blend of innovation and tradition. Whether you're conjuring up the ghostly echoes of rockabilly or pushing the boundaries of ambient soundscapes, the AD-9 delivers with a unique touch."