I thought Franklins practice amp looked a lot like a Marshall with that gold colored faceplate so I gave it a proper Marshall logo and an extra input jack.
This adds a minor touch of detail and realism to Franklins house and it goes well with other mods that convert various clutter to real life brand name items.

To install with OpenIV you replace v_res_fh_guitaramp.ydr in X64c.rpf/levels/gta5/interiors/int_props/int_residential.rpf