If you find a marching show that you love that has electronics (and you don't want to use electronics equipment in your show), it would be worth having a conversation with the arranger to see if it would work without them. We have optional electronics packages for several of our shows at the request of the commissioning client, but our shows will sound great even if you don't use the included optional electronics package. Any arranger who understands 2A bands will know that not all bands have electronics capabilities, and if needed, will likely work with you to modify the show to work without them!