I posted about this on TGP months ago an recently on Facebook and Joe Cozzi recommended I post it on the Eventide forums.

I picked up a H90 earlier this year. Long time H9 Max user.
I always liked the H9 Spring Reverb algo but did not love how the tremolo was just in front of the reverb. When I learned that the H90 allows the Tremolo to come post-reverb, I was excited that the H90 would be able to get that more classic sound that you find in traditional Fenders and with most reverb/tremolo pedals.

Unfortunately, I cannot figure out what the tremolo post option is supposed to do in the new H90. When the trem is assigned to be pre-reverb, it sounds great. Like the way it did in the H9. But when the trem is switched to post, the tremolo almost completely disappears. I have to turn the intensity almost all the way up and it sounds like it is just modulating the reverb tail.

I encourage anyone to test this out.T he issue is with the Trem/Post setting. On most traditional setups, or even just running a tremolo effect post reverb, it will modulate the whole signal. On the H90, it doesn’t.
Try it out. Set the reverb to a reasonable 30% mix. Then set the trem to post-reverb mode. Now gradually increase the intensity of the tremolo and tell me what you hear. Even at 100% tremolo intensity you can barely hear it. It makes the whole tremolo post-reverb function useless.

An Eventide representative months ago said it was purposely designed this way. “Sorry for the confusion, but yes this behavior is intended.”

However, on my recent facebook thread, when asking about the tremolo modulating the whole signal, Joe replied that “capability on Spring has been there since the H90 was released.”

I suspect that the vast majority of your guitar playing customer base would prefer this to be arranged in a more traditional manner to emulate traditional amps and pedals.

The tremolo applying to just the reverb tail and not the whole signal make the tremolo very weak and anemic on this algorithm. The only way to hear it is to have the reverb mix all the way up. But who wants to max out their reverb everytime just to hear a little blackface style tremolo?

If the trem can come after the reverb in the Spring algorithm and affected the whole signal (like it does on most old amps and popular pedals like the Flint or SA True Spring) then it would make this aspect of the algo so much more useful.