Eureka Mastering provides professional audio mastering services.  The studio is located in Portland, OR and is owned and operated by Mike Nolte, who has worked with many independent artists and record labels for more than 10 years.  Equipped with a carefully curated selection of rich, velvety NOS tube processing and precision solid state electronics, Eureka Mastering can enhance your project with everything from classic vintage to fast and clean modern mastering.  Eureka Mastering is an Apple certified Mastered for iTunes provider.  

We are looking forward to working with you!  Please contact us with your project details!



Bell House

Shy Boys

White Is Relic​/​Irrealis Mood

of Montreal

Vault Vol. 3




Occasional Din

J Fernandez

Echo Park


Healing Contest

Locate S,1

A Date With Caligula

Swedish Death Candy

Over The Wall





Radiation City

Shy Boys

Shy Boys

Holy Terror


Vault Vol. 2


Rune Husk

of Montreal


Surface to Air Missive

Running Back


Vault Vol. 1




Shy Boys

Shy Boys


Mac Lethal


  • SPL DMC Mastering Console
  • Pacific Microsonics HDCD AD / DA Converter(x3)
  • Bricasti M1 SE D/A Converter
  • Mytek 8x192 AD/DA Converter
  • Prism Sound Maselec Master Series MEA-2 rev 7 Stereo Equalizer
  • Dangerous Music BAX Shelving Equalizer
  • Requiste Audio L2MK3 Stereo Tube Limiter w/Tube PSU
  • Crane Song Trakker matched pair Compressor / Limiter
  • Kush Audio Clariphonic MS EQ
  • Dangerous Music Compressor
  • Waves L2 Ultramaximizer Hardware Version
  • Weiss AFI-1 AES Digital Interface
  • Crookwood VU Metering
  • Lipinski L-707 Speakers
  • Bel Canto M500 Monoblock Amplifiers
  • Acoustic Zen Double Barrel Bi-wired Speaker Cables
  • Acoustic Zen Absolute Copper XLR interconnects
  • Acoustic Zen Matrix Reference 2 Analog and AES Cabling
  • Equitech 1.5Q Symmetrically Balanced Power Transformer
  • Analysis Plus and Requisite Audio IEC Power Cabling
  • Mac Mini with Uptone Audio JS-2 External Power Supply


CD / Digital Mastering

Optimized mastering for CD and WAVE uncompressed format.

1 song($75), 2-4 songs($65/ea), 5-8 songs($55/ea), 9 or more($50/ea)

Mastered for iTunes / MFIT

Optimization of mastering for the itunes format. Masters are delivered to your distributor or label in a hi res format that has been tested with tools from apple to make sure there are no "overs" causing clipping after being converted to their Apple Codec format. 

$10 extra per song

Additional Instrumental Masters

If you have instrumental mixes that are the same as your regular mixes without vocals.  

$8 extra per song.

Vinyl Premasters

Specially prepared high resolution files for delivery to the lacquer cutter or vinyl manufacturer.  One file for each side of the record with a cut sheet.

12"($100), 10"($50), 7"($30)

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