SIDs tested and ready for sale :) I've tested over ~100SIDs using Roland MC-307 connected via MIDI and audio to my MIDIBOX V1 and then to my PC with RME HDSP9632 with spectrum analyzer. Each SID must pass test with full audio spectrum. Finally 32 passed exam !!! Rest from 500 SIDs I've sell as quick as it's possible at electronic openair market cause of it's look - all was remarked / repainted to 2282 and 0186/14 series. But don't be affraid I'll have soon few (~30 or more) true unmarked / unpainted 8580R5 ! If anyone wants to buy this 6581s please for PM. Simon