Some modification are so simple. Move the volume control to the back of the amplifier and avoid long runs of interconnect cable inside the amplifier.

This kit contains everything you need . An aluminium extension rod 26cm length, brass connector with stainless screws and an additional screw for mounting through the front panel to ensure a smooth rotation. One L-shape adjustable mounting angle, size 50mm x 12mm angle with 28mm wide.

This kit fits also most other brand's volume controls and switches