Mind you, this library doesn't emulate the actual SY synth engine. With discount points, etc., I think I paid less than forty bucks. Well, I'm a sucker for the Yamaha SY99 and they have a library emulating that instrument as well ( Syntronik 99).

This is my favorite chorus and I won't use anything else and is a worthy addition to your rack.I mentioned recently that I bought IK Multimedia's DCO-X library for Syntronik Free and SampleTank 4 CS (you have to have those free applications installed to use the sounds). You'll also need the free OSL Chorus which you can download here. I'd appreciate not reposting the link anywhere as this is mainly for the people participating in this thread.

There are a total of 32 patch combinations, and I've recreated all 32 in Dexed, which you can download here: I've set them up according to how I would use them, so some are panned, some are chorused, some are dry. You can pan each hard L/R or you can leave them as is. You have the flexibility of deciding how you want to layer them. One of the interesting things the TX7+DX7 combo offers is a joint Factory Soundbank - that is, you're supposed to load a specific bank of sounds into the DX7, and then a different bank of sounds into the TX7, and then you're supposed to play them together. So essentially I now have two DX7s in the house, so yay. I'm treating it as its own instrument, not attached to the DX7 how it's supposed to be. The Yamaha TX7 is an FM Expander, and it's meant to be used in conjunction with the DX7 - although it can serve as a standalone FM box and does not need the DX7.

The TX7 came in, and not surprisingly it sounds exactly like the DX7, so that's great. It's free, but I think you get more out of the app if you have a Yamaha MX keyboard. The 'ball controller' is pretty fun to change the sound quickly. Something else to checkout in the meantime is Yamaha's FM Essential on iOS. Mainly I got it out of curiosity and for historical reasons, but it was also an impulse purchase, and since my bday is later this week I thought 'oh what the hell, happy birthday to me.' A 4 OP synth though was my 2nd choice - those are definitely cheaper and still have a solid DX sound. Also important to me was being able to load the entire DX7 patch library without compromise. But ultimately what was important to me was having access to the pure classic DX7 sound, and that's 6 OPs, with the 12-bit DAC. Had you ever considered the Reface DX? It's only a 4-operator, but the demos sound cool and the touch controls seem to work very well and had some macro features from what I remember.

Sy77 dx7 patches