In addition to audio mastering, I offer complete audio restoration services. Audio restoration includes the removal / reduction of tape hiss, vinyl and surface noise, and anything that requires major editing and forensic work. In recent years I've restored close to 100 albums with source material ranging from old crackly 78 phonographs, hissy analog cassettes, beat up vinyl records and everything in between. (I have restored and mastered all the releases for the renowned Mississippi Records in Portland, Oregon.)
The tools I use for restoration are some of the best in the world. This includes the entire restoration suite made by Algorithmix (NoiseFree, ScratchFree, ReNOVAtor, K-Stereo and the Linear Phase PEQ Red, Classic PEQ Blue, and Linear Phase PEQ Orange EQ) running in the Sequoia 11 environment.

Pricing for restoration services vary and depends on the severity of the noise and how clean the final results should be. A load-in fee may apply if source material is captured in realtime. (non-cd audio or data source) In general, pricing for restoration services range from $20-$50 per-song, on top of the the standard mastering rates.

Here are a couple samples of what is possible: