  We consider a holographic model consisting of Einstein-Maxwell theory in
(d+1) bulk spacetime dimensions with (d-1) massless scalar fields. Momentum
relaxation is realised simply through spatially dependent sources for operators
dual to the neutral scalars, which can be engineered so that the bulk stress
tensor and resulting black brane geometry are homogeneous and isotropic. We
analytically calculate the DC conductivity, which is finite. In the d=3 case,
both the black hole geometry and shear-mode current-current correlators are
those of a sector of massive gravity.
