Shop › Maxon FL-303 (Vintage) Image 1 of 5 Image 2 of 5 Image 3 of 5 Image 4 of 5 Image 5 of 5 Maxon FL-303 (Vintage) $350.00 70s Maxon FL-303 Flanger. Uses the Reticon SAD1024.-recapped and servicedrequires 18vdc Local pickup or US shipping Get notified by email when this product is in stock. Add To Cart Added! 70s Maxon FL-303 Flanger. Uses the Reticon SAD1024.-recapped and servicedrequires 18vdc Local pickup or US shipping