JLM Audio Qty. 1 2 3 4 5 6 7 8 9 10 Add to Cart Sidekick Rack Wings (Pair) - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available. A set of bolt-on rack ears for the JLM Sidekick rack. Mount your Sidekick in a standard 19 inch studio rack.