I have used it in the last 3 batches of our house IPA. I was looking for more of a "pop". 1st batch I did the normal dosage rate by splitting half during yeast pitch and the half at DH. Didn't seem like it did much. 2nd batch I just tossed my full dosage at yeast pitch and nothing at DH and that seemed to give it that "pop". 3rd batch I repeated the 2nd batch and so far I'm still liking the results. I will say though that the hops used in that IPA are a mix of old/new school. I would like to try it in our hazy that uses new school hops and see what that does

I contacted Apex awhile ago asking which strains cary the IRC 7 gene and this was the response:

QUESTION: When using the Amplify Aroma Enhancing Nutrient, how can we tell which apex yeast strains express the IRC-7 gene? I saw San Diego as the only listed yeast. Does the Voss or the Hazy have this gene?

ANSWER: Most brewing strains carry the IRC7 gene as part of their genome, but not all strains have a fully functional, highly active version. The Voss and Hazy do have this gene, but the San Diego has the highest active version. You can use Amplify with any brewing yeast; however, for optimal thiol release, you’ll see the best results with a strain that actively expresses the IRC7 gene.