Real name: Jonathan Cliff Walker

Mastering engineer at Steinhaus. Not to be confused with Memphis based Jeff Powell (Sam Phillips Recording Studio and Take Out Vinyl).

If you have a vinyl release with runout etchings including "J. POWELL" or "J POWELL" you almost certainly are looking for Jeff Powell. If you have a release with a clear mastering or lacquer cutting credit to "J. Powell at Steinhaus" this is the correct artist.