Hi there! I would create my own record rack and I'm interested in what hardware you need for pre-processing sound when recording. I'll include some of your suggestions in my record rack. The basis is naturally clear: a preamp and an equalizer. In my case, they will most likely be the API 500 series and an equalizer based on the Calrec Pq1549. But I would like to learn about the other components from you) I look forward to your suggestions. Yours, Matthews.