Marsh Mastering is a top-tier, no compromises audio boutique with an
outstanding reputation for quality work and supreme attention to detail.
We specialize in custom audio mastering for today's Vinyl and Streaming formats
while continuing to support all legacy mastering formats both digital as well as analog. 
Top engineers, producers, composers, managers, labels and a diverse cross section of
major and independent artists from across the globe rely on
Marsh Mastering as the crucial final step for their commercial releases. 

The Mastering Room

Marsh Mastering's Main studio features a purpose-built hybrid tube/discrete console, developed in-house with Steve Firlotte of Inward Connections with custom and modified processing from EAR, GML, Maselec, A-Designs,
TK Audio, SPL, and Inward Connections. The console is capable of operating in both Left/Right and Mid/Side configurations simultaneously. Console tubes are hand-selected Telefunkens and our elliptical and M/S networks are one-of-a-kind designs from Steve.  We've taken a fanatical approach to signal flow integrity and the results speak for themselves.


The Lathe Room

Marsh Mastering's second studio is The Lathe Room.  Centering on a vintage Scully 601 Disk Mastering Lathe with custom wound Westrex 3DII stereo cutterheads, a vintage Westrex 2B Mono cutterhead and a custom modifed Westrex amplifer rack.  The entire system has been restored under the knowledagable eye of local Scully/Westrex 'Godfather' Len Horowitz from History of Recorded Sound
The Lathe Room has it's own custom analog mastering chain with EAR tube EQ, Maselec A/B program EQ's, Maselec compression & HF limiting, custom HP/LP filtering by GOLY and a custom cutting console by Inward Connections.  Mastering live to the lathe from analog tape is accomplished through a pair of Studer A80 tape machines with 1/4" and 1/2" configurations allowing for 100% analog mastering tape to disk.


Marsh Mastering
Our facility features the finest clocking and conversion available and proprietary wiring feeding a custom monitor chain with Bryston-powered PMC mains and DynAudio Midfields.
Our system complement includes a (2) Hapi Premium-interfaced Pyramix DSD workstations
and (1) RME Interfaced Pyramix workstation.
In addition, pristinely restored vintage ATR-104 and Studer A80 tape machines with custom Extended Response heads in multiple configurations are available for analog playback of any type, as are all digital formats (tape, disc or files).   Voltage regulated, transformer isolated balanced power distribution is employed throughout the facility for superb system fidelity.
We offer stereo and Multichannel SACD authoring and we are an approved 'Apple Digital Masters' facility.

Click to read discographies and learn more about our engineers.