I was wondering if there was a clone or a very good substitute for the Alembic SF-2. These are getting more difficult to find second hand and at this time, a brand new one is at this point financially out of the question. I know Frog Pedals and AMT Electronics have good copies of the Alembic FX-1 but it's the filter that I am looking for. Is there also a combination of pedals that would roughly approximate what the SF-2 does? I know that the original version is the best but I would be happy for the second best thing too. Thanks.