Question What are the differences between TonePrints and A,B,C presets For the Flashback Delay X4 & The Alter Ego X4 Answer Do not confuse the TonePrint slots which is accessible with the Delay Type selector and the memory preset you can store on the A, B or C memory location accessible with the A, B & C foot switches. The TonePrint slots 1,2,3 and 4 are a kind of memory. They are only accessible and editable with the TonePrint editor. This allows you to access to many parameters not available on the pedal itself. You can obtain the delay you have in your head. For instance you can put some modulations and set some parameters into values not available with the knobs on the pedal. For instance, when you turn up the "FEEDBACK" knob on the Alter Ego X4 (or Flashback X4) you go to 0% from 99%. But when you edit this parameter in the TonePrint Editor, you can go to 0% from 120%. Cool it isn't Of course, once you finished the edition, you are able to memorize the delay of your dreams in one of the four TonePrint slot on the Alter Ego X4 (or Flashback X4). Great! Now, take a look at the TonePrint editor, you will not find the knob for the Delay Type Selector where you can choose "E REC 1", "E REC 2" etc. That means the TonePrint edition does not include this parameter. You want to store your own preset with this parameter of "DELAY TYPE" Here we go : The memory slot A, B and C are another kind of memory. Different as the TonePrint memory because unlike the TonePrints, you can choose the delay types withe the Delay Type selector and memorize it in preset foot switches A, B or C. And furthermore of course you can memorize the position of the delay "TIME", the "FEEDBACK" and the "DELAY LEVEL" knob. More of that, you can edit the preset with the TonePrint editor. NO Absolutely, to go further in the parameters edition, as described above, you can help yourself with the TonePrint Editor. You will be able to access to many parameters. As you read above, there is a relation between TonePrints and memory slots. But we can go further. You can store a TonePrint in a memory slot A, B or C. To do that, push the footswitch where you want to store the TonePrint. A, B or C. For instance we will choose the C slot. Then, choose the TonePrint you want to store in the memory slot, 1, 2, 3 or 4. For that example, we will choose the 4. Once you choose the TonePrint, note that now you can hear the effect stored in the 4 TonePrint and not the effect stored in the memory in the C slot. Last manipulation, push for a few seconds on the C footswitch. The light will turn off, then flashes 4 times green and turns red fixed. The TonePrint 4 is now stored with the C memory slot. Magical! This is because the delay type selector position is memorised in the preset. A video that shows a comparison between the Flashback X4 and the Alter Ego x4