Abstract: An axis of rotation of a rotatable connection between a rocker arm, attached to the bottom of the amplifier, and a support frame of the amplifier stand is on the centerline of the amplifier box depth. A balance spring arranged between the support frame and the rocker arm is increasing loaded with tilting back of the amplifier on the stand to oppose a fallback load of the amplifier and permit a friction device applying a frictional force dampening the relative rotation to hold the amplifier in a selected tilt angle up to 45°.

Abstract: A cushioning guitar strap reduces unit load on the shoulder by the use of a relatively wide cushioning pad formed with a soft flexible foam layer to conform to a user's shoulder under the load of a guitar, with a flexible film, which is dimensionally stable in use under the load of a guitar, bonded to the foam layer to transfer the load over the area of the pad. Front and back straps connected to the cushioning pad each have a quick connect-disconnect adjustment mechanism permitting adjustment of strap length while the guitar strap is in use over the shoulder supporting a guitar.