Purpose High-flow arteriovenous fistulae (AVFs) may lead to complications including steal syndrome, high-output cardiac failure and impaired access. The DYBAND technique, originally described by Lee et al., offers a minimally invasive, dynamically adjustable external banding approach to reduce flow using intraoperative duplex guidance. Methodology We report our early institutional experience applying the DYBAND technique in three patients with symptomatic high-flow AVFs. A polyurethane band was applied to the juxta-anastomotic vein and tightened intraoperatively under duplex ultrasound to achieve target flow rates of 600–1200 mL/min. Pre- and post-operative flow measurements and symptom resolution were recorded. Results Three patients (2 males, 1 female with mean age 71 years) underwent dynamic banding for symptomatic high-flow AVFs (2 brachiocephalic, 1 radiocephalic). All cases presented with steal syndrome. Intraoperative adjustment reduced brachial artery volume flow from a mean preoperative flow of 2272 mL/min (range: 1300–3700) to target levels between 700–1100 mL/min. Postoperative flow measurements demonstrated sustained reductions (989–1176 mL/min). All reported symptomatic improvement. There was no early thrombosis or reintervention. Conclusion Our early institutional experience supports the DYBAND technique as a safe, effective, and reproducible method for managing symptomatic high-flow AVFs. Larger studies with long-term follow-up are warranted to validate its wider applicability.