Rocky votolato   hospital handshakes Scenes Absolute monarchs   1 Hot bodies in motion Sisters   drink champ Iska dhaaf Jen wood Pearl jam Nyves   ep Sisters   diamonds of gold Stereo creeps Pearl jam   copy Grenades Kingdom of the holy sun Ever so android The echolarks Cd terrylee Lerin andrew Smokeyb Rocky ep Kris orlowski   columbia city theater sessions Mother love bone   apple Mother love bone   shine Shannonstephens Wanz   waren g Mother love bone   1 Barcelona Anakin Soft sleep Rocky votolato   live at black belt

Black Belt Mastering

About Black Belt Mastering


Our purpose is to make your record sound great. We do this by leveraging our experience and by building good relationships with engineers, artists and musicians. As a fully equipped audio mastering facility, our goal is to help create a cohesive master with impact by respecting the integrity of your mixes and helping them translate well outside the studio.

Musicians are encouraged to attend, though it is not required. Over the years we have enjoyed working with local, national and even international engineers, artists and bands.

We've helped develop most of the custom analog equipment in the studio making it truly one of a kind. With these tools and the desire to create a superb product, we are constantly striving to push ourselves and the masters we create to the highest levels of quality. Black Belt Mastering is among a select group of studios that has achieved certification by Apple to provide Mastered for iTunes 'MFiT' masters.

We're also proud to be the only mastering studio in Washington to offer master lacquer cutting. Lacquer cutting for vinyl is performed on our fully restored Scully Lathe with Westrex 3D-II cutterhead. This Scully/Westrex combo, formerly employed at MCA records, has cut some of the best sounding LP's of the 20th century. Over the years, this lathe has been optimized to achieve even better sounding cuts, securing its relevance in 21st century.

A Washington state native, Levi Seitz, owner/operator has played a role in many facets of the professional audio community. Past experiences include live sound, tracking/mixing, sound design and audio post-production. Leveraging experience and a love for music as his foundation, levi is ready to elevate your record to it's full sonic potential.

Chris walla

“Levi turns around world-class work at the speed of sound. I've been really happy with everything I've brought to Black Belt.”

— Chris Walla (Engineer/Producer/Musician: Hall of Justice/trans-records - Seattle, WA)


Photo: Björn Lexius

“Working with Levi was one of the best Mastering experiences I've ever had. He was super flexible, easy to communicate with, and I could tell that helping me realize my vision for the record and be happy with the final product was really important to him. I highly recommend working with him if you get the chance!”

— Rocky Votolato (musician)


“Almost all of my mix sessions end with the question: ‘Where should I go for mastering?’. I promptly hand them one of Levi's business cards and tell them to go to Black Belt Mastering. Why? He's close to my studio in Seattle, his rates and equipment are great and he makes my mixes sound killer! An extra bonus is that he's a helluva nice guy and very passionate about his work.”

— Don Farwell (Producer/Engineer/Owner: Earwig Studio)

Wanz 2

“I enjoy the relaxed environment Black Belt Mastering provides. The sound quality is stellar and their services are always on point!!”

— Mike ‘Wanz’ Wansley (Grammy winning and Platinum record holding Singer: Macklemore/Warren-G)

Daniel pampuri

“Black Belt Mastering is great! Levi is always willing to take the time and effort to contribute in a very musical way and he has always made my mixes and productions sound better than what I delivered to him. Very important to be able to trust someone with a great ear and a great studio.”

— Daniel Pampuri (Engineer/Producer: NRG-North Hollywood, CA)

Ryan clark

Photo: Renee McMahon

“Levi is easy-going, proficient, professional, and excellent at what he does. I’ve been very pleased through every aspect of working with Black Belt.”

— Ryan Clark (NYVES)

Matt meli

Photo: Alex Fry

“My mixes come back sounding like my mixes, just better, and with more continuity. Black Belt mastering consistently makes me happy, but more importantly my clients love the final product!”

— Matt Meli (Engineer/Producer: Matt Meli Productions. Austin, TX)

Cmj nologo

“I pick Levi because I don't have to worry at all, he's someone who just ’gets’ what I'm trying to do, and I only like attending sessions because it's fun to watch him work.”

— Chris Mathews Jr. (Owner/Engineer/Producer: Joonior Studios - Seattle, WA)


“Blackbelt Mastering has been an integral part of Good to Die Records since our early inception. So far Levi has mastered 6 of our vinyl and digital releases to great results. Blackbelt is the first place I recommend to anyone needing for mastering services for their project. The experience and quality is second-to-none.”

— Nik Christofferson (Owner: Good to Die Records)


“Levi doesn't just slap a bunch of compression on it and send it back to you-- he does his work with great care and attention to detail. My recordings have a depth and spaciousness they never had with other mastering engineers. He applies processing very lightly to preserve the natural dynamics of the music. I don't have to think about who I'll send my next recording to.”

— Shannon Stephens (Singer/Songwriter)


“I love working with Black Belt Mastering because Levi can reach a great volume without squeezing my mix. Dynamics and punch are retained in every master.”

— Luis Lopes (Engineer: FlapC4-São Paulo, BR)

Matthew emerson brown

“Black Belt mastering is easily my favorite mastering studio. Levi truly cares about his work and I trust his ears to bring out the best in my mixes.”

— Matthew Emerson Brown (Producer, Engineer, Mixer)

Debbie Miller

The Poisoned Glass

Fiona Dawn

Kye Hillig

Timbre Barons



Kris Orlowski


Julian Moon

zebra mirrors

Rocky Votolato

Widerange Hum

Mico de Noche

Blood Drugs



Luke Morton

Woody Russell


The Contestants

Nego E

American Kings

Hot Bodies In Motion



Seattle Noise Vol1

Iska Dhaaf

Jen Wood

St. Kilda

Cata Hari

The Beats, Man


Shannon Stephens

Camila Teixeira

Ghost Ship

Lerin Herzer : Andrew Joslyn

Home Sweet Home

stereo creeps

knathan ryan

Scott Krajca

Monogamy Party

Absolute Monarchs


Polly Okeary

Rachel Harrington



Kingdom of the Holy Sun

Jacob John

Rocky Votolato



Ever So Android

Serial Hawk

Lights From Space

The Albert Lerner Trio


Timothy James Meaney

Ghost Pains

Kye Hillig

Smokey Brights

Brooklake Church

Subways On The Sun


Year of the Cobra


Oh Dear!

Preacher's Wife



Dirty Glory

Bleach Bear

Coma Figura

Michelle From The Club

Terry Lee Hale

Tae Phoenix

Jenee Halstead


Young Neighbors

Hellhound Syndicate


Destroyer of Light

Zach Fleury

Zach Fleury


White Sails


Day Laborers and Petty Intellectuals

Dog Shredder



Susan Galbraith

Rocky Votolato

Benjamin Verdoes

Tim 'too slim' Langford

DJ Wundrkut

Citizens & Saints

Onry Ozzborn

Meridian Arc

The Kings

Two Ton Boa

Lincoln Barr

Iska Dhaaf

Pearl Jam

Made Of Boxes

Stereo Creeps

The Bloody Nerve

The Echolarks

Live On Lacquer Vol1


Handsome and Gretyl




Mother Love Bone

Light Thieves

Zach Bolen



Soft Sleep

Rocky Votolato

Above The Pines
Adriana Dre
Albert Lerner Trio
Alyssa Mellinger
American Kings
Anduis Jent
Apartment Kids
Atlas And Arrows
Austin Potter
Bad Things, The
Bala Haza
Black Lightning
Black Plastic Clouds
Black Pussy
Blood Drugs
Bob West
Brenda Xu
Brian Fennell
Brian Gmerek
Brianna Lane
Brody Blackburn
Bryan Reynolds
Camila Teixeira
Caspian Coberly
Cha Cha Lounge, The
Champagne Sunday
Charity Stripe
Chris Walla
Chris Mathews jr.
Coma Figura
Confetti Kids
Curtis Lee
Dangerfield Newby
Henry At War
Dead To Rights
Debbie Miller
Destroyer Of Light
Dave Gross
Dog Shredder
Dogs of War
Drango Five
Dulcinea Renee
Earwig Studio
Echo Devils
Eki Abrams
El Colonal
Elliot Patridge
Ember After
Empire Way
Eternal Fair
Fantastic Animals
FAVN (Denmark)
Fiona Dawn
Flap C4 Estudio (Brazil)
Foxhole Norman
French Letters
Gary Minkler
Geoff Ott
Ghost Bunny
Ghost Pains
Ghost Ship
Groover Dose
Hot Bodies In Motion
Hellhound Syndicate
Home Sweet Home
Honey Mustard
Hope College
Ice Teeth
Imaginary lines
Into the Storm
Ira Merrill
Jacob John
Jay Boone
Jen Wood
Jeremy Enigk
Jugs of Blood
Julian Moon
Kaia Nutting
Kiddoo and the Dude
Kids on Fire
Kingdom of the Holy Sun
Kings of Oblivion
Kingswood Estate
KPLU School of Jazz
Kris Orlowski
Kye Hillig
Lanford Black
Late Night Transit
Lights From Space
Little House
Lola Regenthal
Loveless Building
Luciana Pires (Brazil)
Luke Morton
Maddy Smith
Mama Rags
Mariana Furquim (Brazil)
Michelle from the Club
Mico De Noche
Mind Vice
Monogamy Party
Mother Love Bone
Moviola (Brazil)
Nego E (Brazil)
New Drugs
No Crown
Nolan Garett
Ocinco (Brazil)
Oh Dear!
Ol Doris
Olde Ghost
Operation ID
Other Desert Cities
Pearl Jam
Peter and the Tribe
Piko Panda
Pity Kiss
Polly O'Keary
Preachers Wife
Rachel Harrington
Radio Romance
Radio Telescope
Rainbow Wolves
Ramps (Australia)
Real Don Music
Rich Medic
Rocky Votolato
Scorched Earth
Shannon Stephens
Shim Shaws
Sister Girlfriend
Skirl (Spain)
Skunk Rider
Smokey Brights
Song Sparrow Research
South Jackson
Special Guests
Split Skins
St Kilda
St Paul de Vence
Stereo Creeps
Subways on The Sun
Supply and the Man
Susan Galbraith
Tae Phoenix
Test Dream
The Beats, Man
The Color of Controversy
The Lorens
Third Attempt
Tim 'Too Slim' Langford
Timbre Barons
Tone Monkeys
Tooth and Nail Records
Town Hall Brawl
Toxic Kid
Tummler And Solomon
Uncle Lord
Universal Music Group
Where Sails Meet Rails
White Sails
Wicked Zens
Widerange Hum
Wild Arms
Wild Throne
Willow Collective
Wood Knot
Woody Russell
Year Of The Cobra
Zach Fleury
Zebra Mirrors

The Mastering Studio

Black Belt Mastering is primarily an analog studio, most of the equipment is either custom built or modified. We embrace both analog and digital technologies to bring out the best in your recordings. Each piece of equipment has been selected and optimized just for mastering.


  • Scully vinyl lathe
  • Sony APR (1/2"-1/4" tape)
  • DSD, 1-Bit 5.6MHz
  • DAT
  • Studio One
  • Samplitude

Analog processing:

  • Squarewave 'NET' EQ
  • Squarewave 'SPEQ'
  • Squarewave 'SWC'
  • Focusrite 315 EQ
  • Manley Vari-Mu
  • FCS P3S ME
  • FCS MSP-02
  • FCS ATC-01
  • Maselec MLA-3
  • Maselec MPL-2
  • Cranesong H.E.D.D 192


  • Dunlavy SC-IV/A
  • Audire Paralando Class 'A'
  • M&K V-125 Sub
  • CraneSong Avocet IIa
  • Altec 'laptop' speakers

Mastering Rates


Unattended or Attended:

$60 — per song

$80 — Singles


Instrumental/Radio/Alt Edits — $20 per song*

24bit Vinyl Pre-Master files — $100**

Additional revision(s) — $100/hr 1hr min

PMCD Master — $75

Reference CD — $10

Tape Layback — $25 per song

MFiT Masters — $100

DDP Image — Free with session

Included with each session (attended or unattended) you will receive WAV files of the masters for digital distribution along with a DDPi production master used by duplication plants to manufacture CD's. One free hour of revisions is also included with every session if needed.

*Instrumental/Radio/Alt edits must be supplied at the time of the initial mastering session. Alt mixes received after mastering is complete are billed at the standard rate of $60/song.

**Vinyl Pre-Master fee is waived if I am cutting you an Acetate and Lacquer set.

Vinyl Cutting

Master Lacquers:

12” and 10” — $160 per side

7” — $80 per side


12” lacquers over 22 min add $40 per side

7” lacquers over 5 min add $20 per side

Reference Acetates:

All sizes — $55 per side


Audio in lock groove — $25 per side*

Reverse grooves — $40 per side*

Lacquers or Acetate cut from tape — Call for price.

DJ single / Dub plate — Call for price.

Completed lacquers are express shipped to the pressing plant of your choice, and the cost for this is approximately $80. Shipping is paid for by you, the client. Whenever possible, we will combine multiple orders to lower the shipping cost.

Shipping, paper sleeves and protective cases for acetates are included in the price.

*Reference acetates for either option are mandatory at the standard acetate rate of $55 per side.

Payment types:

Paypal Credit cards

Frequently Asked Questions


Sessions are billed at $60 per track. Washington state residents are subject to 9.5% WA state sales tax for physical vinyl parts such as lacquers and acetates. Other mastering costs are listed on the RATES page.

Once the mastering process is complete, and payment has been made, you will receive fully sequenced WAV masters of all your songs along with a DDP image that can be used for CD manufacturing. Other formats, such as MFiT or 24 bit vinyl ready masters can be provided on request and are listed on the RATES page.

Please provide the following info: Song order, Artist or Band name, Album Title, Song Titles, ISRC codes (if you have them).

Yes. If you'd like to provide a reference song I will gladly accept it. This is a great way for me to get a feel for the sound you are after. I also find it helpful to include a few brief notes if there are specific song transition requests. Ultimately, a quick phone call is best.

Yes, I encourage attended sessions. Sessions start at 10am. Attended sessions allow you to be involved and understand the mastering process from beginning to end and provides you access to ask questions and hear immediate before and after mastering samples of your record. Sessions can take anywhere from as few as 3 hours for short EP’s to 5+ hours for longer, more involved LP’s.

You can send mixes by clicking this link for or by forwarding a link to a Dropbox folder.

We proudly accept 1/2’’ and 1/4’’ reels of analog tape, 1-bit DSD, WAV or AIFF files.

Digital songs should be delivered as Stereo. We prefer to accept 24bit / 44.1k or higher, but can accept others if necessary. Please do not send MP3's or ‘lossy’ audio. Make sure there is no distortion or clipping as it's best to start with the highest possible quality.

Analog reels (either 1/2” or 1/4”) should be delivered with tones of 10kHz, 1kHz and 100Hz at a level of 0VU. At least 30 seconds of each tone with 10 seconds of silence in between at the end of a reel is appreciated. Please number and label your tape boxes with the tape speed, reference level and the EQ standard that was used. If possible, please organize the songs in the correct running order (as they will show up on the record) with sufficient leader tape at the top and tail. As a backup, supplying a digital copy of each song on a thumb-drive is recommended.

Unless intended for artistic reasons, please omit any "loudness" or "brick-wall limiting" plugins from the stereo bus of your mix. If you are unsure as to what level to deliver your song, a good suggestion is to have the digital peaks approaching -3dBFS and an RMS value below -15dBFS. It's always nice to have some headroom to work with!

Yes, one free hour of revisions is included with each session. If for whatever reason you want to change something related to mastering after receiving your initial reference master, it’s on me! Any revisions beyond the first hour are billed at an hourly rate of $100 per hour.

If you are a new client considering Black Belt Mastering for the first time and are unsure about how your mixes will sound after being mastered here, please contact us and we can discuss your project.

Yes, in the first degree. I studied Tae Kwon Do from age 12 through college with short studies in Wing-Chun Kung-Fu.


  • Reference Acetates — A one-off evaluation cut you take home and play to discover how your record will sound on vinyl.
  • Master Lacquers — These are individual 'Side A' and 'Side B' master lacquer discs that are cuts and shipped to the pressing plant for mass production of vinyl records.
  • Digital Cutting Masters — If we did the initial mastering for your record and you're choosing to have lacquers cut elsewhere, we can provide the 24—bit side A and B digital files and required timing log.

Master Lacquers (for record production)
12” and 10” — $160 per side
7” — $80 per side

Reference Acetates (for home evaluation)
All sizes — $55 per side

12” lacquers over 22 min add $40 per side
7” lacquers over 5 min add $20 per side

Completed lacquers are express shipped to the pressing plant of your choice, and the cost for this is approximately $80. Shipping is paid for by you, the client. Whenever possible, we will combine multiple orders to lower the shipping cost.

Shipping, paper sleeves and protective cases for acetates are included in the price.

While CDs can hold over 70 minutes of material, this is essentially impossible for a single 12" record. There's only so much physical space to pack the grooves. As the length of a side goes up the loudness goes down because the grooves on the record have to be cut with less side-to-side movement (quieter) to fit more information in the allotted space. Very long sides are possible, but not very loud.

Please use the information below as a guideline for timing sides:

12" (33 1/3 RPM)
Best — 18 minutes per side
OK — 20 to 22 minutes per side
12" (45 RPM)
Best — 8 to 9 minutes per side
OK — 12 minutes per side
10" (33 1/3 RPM)
Best — 8 to 9 minutes per side
OK — 13 minutes per side
10" (45 RPM)
Best — 6 to 7 minutes per side
OK — 10 minutes per side
7" (33 1/3 RPM)
Best — 6 minutes per side
Meh — 8 minutes per side
7" (45 RPM)
Best — 3 minutes per side
OK — 5 minutes per side

Both myself and the pressing plant will ask you to provide what's known as a matrix number. The matrix (sometimes also called the 'catalog number') is something that you create or your record label provides you, it is not generated by the pressing plant. The matrix you give me is physically etched into the master lacquers and serves as a way for the plant to track your record throughout the manufacturing process. It's usually an abbreviation of your record label or band name along with a number (i.e. RHR-009 or SDRE0217).

  • First, select a record pressing plant to press your records and submit an order with them. A pressing plant will need to electroplate the master lacquers to create metal stampers, and will then use the stampers in the manufacturing of your finished records. Let the plant know that you are providing your own lacquers (from me). I should not be cutting your master lacquers until you have a confirmed order set with a pressing plant. The plant needs to be expecting lacquers from me. If a pressing plant receives lacquers that are not accounted for, they will not get processed.
  • Second, schedule time to have a reference acetate cut. An acetate will allow you to listen to and evaluate your record on a home turntable, to potentially catch any problems or things you'd like changed before master lacquers are cut. We highly recommend getting an acetate, as this is the perfect time to attend a cutting session and see the process first-hand. Checking the sound at every stage of the process is paramount and prevents potential delays and frustration. (See FAQ about acetate evaluation below.)
  • Third, book a session to have master lacquers cut. Sessions to cut master lacquers are not attended. One lacquer is needed for each side of a record. A single album needs 2 lacquers created, a double LP would need 4, etc. Let me know where the project is being pressed, and once the masters are cut I’ll express ship the lacquers directly to it or the corresponding plating facility.
  • Finally, A few weeks after everything is sent to the plant you'll receive test pressings of your record. These are a small batch of finished records. Most plants require approval of test presses before manufacturing the bulk of your order. Once you approve the test presses the plant will complete the rest of your order.

Acetates are more than double the weight of a test pressing and are cut on aluminium discs that are coated with nitrocellulose lacquer with a finish coat of acetate for curing; they are not made of vinyl like a test pressing. If your acetate sounds like a good vinyl translation then it can be approved.

Please note, if your record player is inexpensively made or has a low torque motor the acetate may play back inconsistently or with warble; this is a turntable issue, not a problem with the acetate or overall cut. Some things to consider when evaluating an acetate at home:

  • Handle your acetate by the edges only. Avoid touching the surface where the grooves have been cut.
  • If your turntable has difficulty playing your acetate, adjust your tonearm's counterweight or stylus force; a worn or damaged stylus can mar the grooves or distort the sound of the acetate.
  • Your acetate is for reference only. Acetates are a softer material than vinyl and will only last a few plays at maximum fidelity before getting noisy. Use it to evaluate the sound of the cut on one or two trusted playback systems before it begins to degrade.

Cascade Record Pressing — The Northwest is lucky to have it’s very own vinyl pressing plant. Located near Portland, OR they are 100% dedicated to making high quality vinyl records and in-house label/jacket/sleeve printing. Their customer service is top-notch and they will go out of their way to make sure you are well taken care of. As an added bonus, anyone in the area can drive over and pick up your completed records in person, saving you hundreds of dollars on return freight!

Gotta Groove Records — Based in Ohio. Gotta Groove Records is a trusted plant with a solid history of making quality 12" and 7" records. They offer one of the most creative 'hand-pour' color operations by way of 'wax mage records'. With minimums as low as 200 and in-house label/jacket/sleeve printing, download code hosting, crowdfunding, wholesale distribution, and consumer—direct fulfillment, they're a great choice.

Yes. With one of our professional Sony APR—5003 reel to reel tape machines we can feed our analog transfer console, which then feeds the lathe for the most direct, pure, analog signal path possible. Prices for cutting master lacquers from tape are higher because it is more involved and takes more time. However, this method often yields wonderful results. Reference acetates for this service are mandatory. Please call to discuss a quote.

Yes, we can do both. Our Scully lathe is one of the few that allows us to start a cut from the inner diameter (near the paper label) moving to the the outer edge of a record. Cutting an endless loop of audio into the lock groove of a record is also possible, the duration of the loop should be exactly 1.8 seconds at 33 1/3 RPM and 1.33 at 45 RPM. An additional $25 per side is added for audio in the lock groove and $40 reverse cuts. Reference acetates for either option are mandatory at the standard acetate rate of $55 per side.



Levi Seitz

Mastering Engineer