M4L Biquad Filter 2.0 (.amxd file)

Due to recent changes in Gumroad’s partnerships with PayPal and Stripe, we have been unable to receive payouts for several months. To ensure a seamless experience for our customers and maintain the quality of our services, we have moved our shop to Sellfy.

Thank you for your continued support. Please visit our new shop here: https://akihikomatsumoto.sellfy.store