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Photo of Rupert Neve Designs Master Bus Transformer

Rupert Neve Designs Master Bus Transformer

Stereo Master Bus Transformer with Class A I/O Amplifiers, 2-band EQ, Compressor, Variable Highpass Sidechain Filter, Width Control, and Super Silk Circuit
$3,999.00
Or $112.00/month§ with
36 month financing*
Rated 4.7/5 Stars (13)
In Stock
Only 4 Left
Photo of Solid State Logic Fusion Analog Master Processor
$400.00 Off!

Solid State Logic Fusion Analog Master Processor

Master Processor with Vintage Drive, Violet EQ, HF Compressor, Stereo Image Enhancer, and SSL Transformer Circuits
$2,299.99
Or $64.00/month§ with
36 month financing*
Certified Open Box available for $2,294.99
Rated 4.8/5 Stars (36)
In Stock
Photo of Cranborne Audio Carnaby HE2 Harmonic EQ

Cranborne Audio Carnaby HE2 Harmonic EQ

2-channel, 3-band EQ with Harmonic Saturation Technology, M-S Operation, USB and Ethernet Connectivity, and Remote Control via Dedicated VST/AU/AAX Plug-in
$1,799.00
Or $50.00/month§ with
36 month financing*
Bundles Available!
Rated 5.0/5 Stars (3)
In Stock
Photo of TC Electronic Clarity M Stereo and 5.1 Audio Loudness Meter

TC Electronic Clarity M Stereo and 5.1 Audio Loudness Meter

7" Audio Meter for Stereo and 5.1 Surround with USB Port and AES Breakout Cable
$319.00
Or $54.00 suggested monthly payment§ with 6 month‡ special financing
Rated 4.7/5 Stars (19)
Photo of Rupert Neve Designs Portico II Master Buss Processor - Black

Rupert Neve Designs Portico II Master Buss Processor - Black

2-channel Compressor/Limiter/Stereo Field Processor - Black
$5,299.00
Or $148.00/month§ with
36 month financing*
Certified Open Box available for $4,769.10
Rated 4.9/5 Stars (28)
In Stock
Photo of API 5500 2-channel Parametric Equalizer

API 5500 2-channel Parametric Equalizer

Dual Equalizer with True Bypass, Range Control, Integrated Power Supply, and 1U Rackmountable Chassis
$3,295.00
Or $550.00 suggested monthly payment§ with 6 month‡ special financing
Rated 4.8/5 Stars (14)
In Stock
Only 4 Left
Photo of WesAudio ngBusComp Analog Bus Compressor with Digital Recall

WesAudio ngBusComp Analog Bus Compressor with Digital Recall

Stereo/Dual Mono Bus Compressor with Digital Control
$3,399.00
Or $95.00/month§ with
36 month financing*
Certified Open Box available for $3,059.10
Rated 4.9/5 Stars (8)
In Stock
Only 2 Left
Photo of Black Box HG-Q Stereo Analog EQ

Black Box HG-Q Stereo Analog EQ

6-band Stereo Analog Equalizer with Tube Saturation Circuit, Per-band Boost and Cut, 2X Mode, Stereo, M-S, Dual-mono, and Mono Operation, and Companion Control Plug-in
$5,999.00
Or $125.00/month§ with
48 month financing*
In Stock
Photo of TC Electronic Clarity M Stereo Loudness Meter

TC Electronic Clarity M Stereo Loudness Meter

Stereo Audio Meter with 7" High-resolution Display and USB Connection for Plug-in Metering
$299.00
Or $50.00 suggested monthly payment§ with 6 month‡ special financing
Rated 4.7/5 Stars (24)
Photo of Fairchild Model 670 2-channel Tube Limiter/Compressor

Fairchild Model 670 2-channel Tube Limiter/Compressor

2-channel Tube Limiter/Compressor with Dual-mono and Stereo Operation, Selectable Attack/Release Time Constants, Custom-designed transformers, and VU Metering
$29,500.00
Photo of SPL PQ Mastering Equalizer - Black

SPL PQ Mastering Equalizer - Black

2-channel Parametric 5-band Mastering Equalizer with Stepped Potentiometers, Constant/Proportional Q, 1/4 Gain, and Auto Bypass
$7,699.00
Or $214.00/month§ with
36 month financing*
Certified Open Box available for $6,929.10
Photo of Bettermaker Mastering Limiter 2.0 with Plug-in Control

Bettermaker Mastering Limiter 2.0 with Plug-in Control

Stereo Mastering Limiter with 100% Analog Signal Path, Plug-In Control, Touchscreen Interface, and Variable Saturation Color
$4,129.00
Or $115.00/month§ with
36 month financing*
Rated 5.0/5 Stars (2)
In Stock
Photo of Rupert Neve Designs MBC Dual-path A/D Converter & Limiter

Rupert Neve Designs MBC Dual-path A/D Converter & Limiter

2-channel Dual-path A/D Converter with Class A Transformer-less and Transformer-coupled Drive Paths and Active Compound Release Analog Limiter
$3,999.00
Or $112.00/month§ with
36 month financing*
Rated 4.5/5 Stars (6)
In Stock
Photo of Maag Audio EQ4M Mastering 6-band Parametric Equalizer

Maag Audio EQ4M Mastering 6-band Parametric Equalizer

2-channel 6-band Mastering EQ with Minimum Phase Shift and Air Band
$2,495.00
Or $416.00 suggested monthly payment§ with 6 month‡ special financing
Rated 5.0/5 Stars (5)
In Stock
Photo of SPL BiG Studio Stereo Image Processor

SPL BiG Studio Stereo Image Processor

Rackmount Stereo Image Processor with Range, Stage, Tube Harmonics, Bigness, and Bass Controls
$1,399.00
Or $39.00/month§ with
36 month financing*
Rated 5.0/5 Stars (1)
In Stock
Photo of elysia xmax Stereo Master Bus Compressor

elysia xmax Stereo Master Bus Compressor

2-ch Rackmount Multiband Master Bus Compressor with Soft Clipper and VariLink
$2,249.00
Or $63.00/month§ with
36 month financing*
B-stock available for $2,024.10
Rated 5.0/5 Stars (4)
In Stock
Photo of SPL Iron v2 Mastering Compressor - Black

SPL Iron v2 Mastering Compressor - Black

Mastering Tube Compressor/Limiter with 4 Tubes in Circuit, 3 Tube Bias Modes, 6 Rectifier Circuits, Sidechain EQ, and 2 Passive EQ Modes
$7,299.00
Or $203.00/month§ with
36 month financing*
Certified Open Box available for $6,569.10
Rated 5.0/5 Stars (1)
Photo of elysia xmax 500 Series Stereo Master Bus Compressor
$157.90 Off!

elysia xmax 500 Series Stereo Master Bus Compressor

500 Series 2-channel Multiband Master Bus Compressor with Soft Clipper and VariLink
$1,421.10
Or $40.00/month§ with
36 month financing*
In Stock
Photo of Black Box HG-2 Stereo Analog Mastering Processor

Black Box HG-2 Stereo Analog Mastering Processor

Stereo Analog Mastering Processor with Pentode and Triode Tube Stages, Parallel Saturation, and Custom I/O Transformers
$3,999.00
Or $84.00/month§ with
48 month financing*
Rated 5.0/5 Stars (1)
Photo of Bettermaker Mastering Equalizer with Plug-in Control - Millennium Edition

Bettermaker Mastering Equalizer with Plug-in Control - Millennium Edition

4-band Mastering EQ with Stereo, Dual-mono, and M/S Modes; High- and Lowpass Filters; Stereo Passive EQ; Full Digital Recall; and USB - Millennium Edition
$3,929.00
Or $110.00/month§ with
36 month financing*
In Stock
Photo of Manley SLAM! 2-channel Tube Limiter - Mastering Version

Manley SLAM! 2-channel Tube Limiter - Mastering Version

Analog Stereo Electro-Optical and FET Limiter for Mastering Use
$10,499.00
Or $292.00/month§ with
36 month financing*
In Stock
Photo of Chandler Limited TG12345 Curve Bender Mastering Equalizer

Chandler Limited TG12345 Curve Bender Mastering Equalizer

Vintage-style EQ with 51 EQ Points, Multiply Switch, and Bypass
$7,480.00
Or $208.00/month§ with
36 month financing*
Rated 5.0/5 Stars (3)
Photo of Dangerous Music BAX EQ Mastering and Mix Bus EQ

Dangerous Music BAX EQ Mastering and Mix Bus EQ

Stereo Mastering and Mix Bus Shelving Equalizer with Stepped Controls
$3,299.00
Or $92.00/month§ with
36 month financing*
Bundles Available!
Rated 4.8/5 Stars (19)
In Stock
Only 4 Left
Photo of Shadow Hills Industries Mastering Compressor

Shadow Hills Industries Mastering Compressor

Mastering-grade Compressor/Limiter with Optical and Discrete Compressor Sections, Sidechain Filter, and Transformer Switching Matrix
$9,985.00
Or $1,665.00 suggested monthly payment§ with 6 month‡ special financing
Rated 5.0/5 Stars (3)
In Stock
Photo of Neve 8051 Multichannel Compressor

Neve 8051 Multichannel Compressor

6-channel Surround Sound Compressor, with Sidechain Linking, Highpass and Lowpass Filtering, VU Meters, and Control Voltage I/O
$7,940.00
Or $221.00/month§ with
36 month financing*
Rated 5.0/5 Stars (1)
Photo of Manley Variable Mu Stereo Limiter Compressor - Mastering Version with T-Bar Modification

Manley Variable Mu Stereo Limiter Compressor - Mastering Version with T-Bar Modification

Dual-channel Tube Limiter/Compressor with T-Bar Mod, Detented Rotary Switches, and True Variable Gain
$7,099.00
Or $198.00/month§ with
36 month financing*
Photo of Heritage Audio SYMPH EQ Master Bus Stereo Asymptotic Equalizer

Heritage Audio SYMPH EQ Master Bus Stereo Asymptotic Equalizer

Stereo Asymptotic Shelving Equalizer with M-S Processing and 2-pole Highpass and Lowpass Filters
$1,799.00
Or $38.00/month§ with
48 month financing*
Rated 4.5/5 Stars (9)
In Stock
Only 2 Left
Photo of Solid State Logic Fusion Analog Master Processor

Solid State Logic Fusion Analog Master Processor Certified Open Box

Master Processor with Vintage Drive, Violet EQ, HF Compressor, Stereo Image Enhancer, and SSL Transformer Circuits
$2,294.99
Or $64.00/month§ with
36 month financing*
Rated 4.8/5 Stars (36)
In Stock
Photo of elysia nvelope Stereo Transient Shaper - Mastering Edition

elysia nvelope Stereo Transient Shaper - Mastering Edition

Class-A Stereo Transient Designer with 4 Modes, Stepped Potentiometers, Dual Mono, and Stereo Link
$2,079.00
Or $58.00/month§ with
36 month financing*
Certified Open Box available for $1,666.00
Photo of elysia karacter Class-A Stereo Saturator

elysia karacter Class-A Stereo Saturator

2-ch Tonal-color Generator Module with Symmetrical and Asymmetrical Distortion, Turbo Boost, Color Filter, and Stereo, Dual-mono, Stepped Pots, and M/S Operation
$1,689.00
Or $47.00/month§ with
36 month financing*
Photo of elysia xmax qube Series Stereo Master Bus Compressor

elysia xmax qube Series Stereo Master Bus Compressor

2-channel Multiband Master Bus Compressor with Soft Clipper, VariLink, and Desktop Chassis
$1,619.10
Or $45.00/month§ with
36 month financing*
In Stock
Only 2 Left
Photo of Pultec EQM-1S Tube Mastering Equalizer

Pultec EQM-1S Tube Mastering Equalizer

1-channel, 2-band Tube Mastering Equalizer with Stepped Boost/Attenuate Controls
$5,295.00
Or $148.00/month§ with
36 month financing*
In Stock
Photo of Bettermaker Mastering Compressor with Plug-in Control

Bettermaker Mastering Compressor with Plug-in Control

Stereo Mastering Compressor with 5" Touchscreen, Front-Panel Digital Recall, and Recall/Automation via USB and Companion Plug-in
$3,299.00
Or $92.00/month§ with
36 month financing*
Certified Open Box available for $2,513.00
In Stock
Only 1 Left
Photo of elysia xfilter 4-band Parametric EQ - Mastering Edition

elysia xfilter 4-band Parametric EQ - Mastering Edition

Stereo 4-band Mastering EQ with High and Low Shelf Bands, Parametric Mid Bands, Resonant High- and Lowpass Filters and Passive Massage Circuit
$2,699.00
Or $75.00/month§ with
36 month financing*
Rated 5.0/5 Stars (2)
Photo of SPL Gemini Mastering M/S Processor - Black

SPL Gemini Mastering M/S Processor - Black

Mastering M-S Processor with Balance, Stereo Width, and Elliptical Filter Controls and 120V Rail Technology - Black
$2,999.00
Or $84.00/month§ with
36 month financing*
Photo of SPL Gemini Mastering M/S Processor - Red

SPL Gemini Mastering M/S Processor - Red

Mastering M-S Processor with Balance, Stereo Width, and Elliptical Filter Controls and 120V Rail Technology - Red
$2,999.00
Or $84.00/month§ with
36 month financing*
Photo of SPL Mercury Mastering DA Converter - Black

SPL Mercury Mastering DA Converter - Black

Mastering DA Converter with 2 AES/EBU, 2 SPDIF, 2 TOSLINK, and USB Inputs and 120V Rail Technology - Black
$3,299.00
Or $92.00/month§ with
36 month financing*
Photo of SPL Mercury Mastering DA Converter - Red

SPL Mercury Mastering DA Converter - Red

Mastering DA Converter with 2 AES/EBU, 2 SPDIF, 2 TOSLINK, and USB Inputs and 120V Rail Technology - Red
$3,299.00
Or $92.00/month§ with
36 month financing*
Rated 5.0/5 Stars (2)
Photo of Bettermaker Mastering Equalizer with Plug-in Control

Bettermaker Mastering Equalizer with Plug-in Control

4-band Mastering EQ with Stereo, Dual-mono, and M/S Modes; High- and Lowpass Filters; Stereo Passive EQ; Full Digital Recall; and USB
$3,929.00
Or $110.00/month§ with
36 month financing*
Certified Open Box available for $3,097.00
In Stock
Photo of Pultec EQM-1A Tube Mastering Equalizer

Pultec EQM-1A Tube Mastering Equalizer

1-channel, 2-band Tube Mastering Equalizer with Stepped Boost/Attenuate Controls
$5,195.00
Or $145.00/month§ with
36 month financing*
Photo of elysia alpha compressor
$174.10 Off While Supplies Last! Save $1,519.00

elysia alpha compressor Certified Open Box

2-channel Compressor with Discrete Class A Circuitry, Integrated M/S Matrix, Feed-forward/Feedback Compression, Soft Clip Limiter, and Sidechain Filter
$11,930.00
Or $332.00/month§ with
36 month financing*
Rated 5.0/5 Stars (1)
In Stock
Photo of Bettermaker Mastering Compressor with Plug-in Control
$456.10 Off While Supplies Last! Save $786.00

Bettermaker Mastering Compressor with Plug-in Control Certified Open Box

Stereo Mastering Compressor with 5" Touchscreen, Front-Panel Digital Recall, and Recall/Automation via USB and Companion Plug-in
$2,513.00
Or $70.00/month§ with
36 month financing*
In Stock
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About Mastering Tools


Do you want your tracks to sound like the ones you hear on the radio? If they don’t already, then that’s probably just because commercial tracks are mastered before they hit the market. If you really want your music to sound professional, then Sweetwater carries a variety of mastering tools that will help you get there.


Shop for Mastering Tools by Brand


Is it really necessary for you to master your tracks? Well, if you want your music to sound great, then yes. Your tracks should always be mastered before being released. Mastering your music allows you to make sure your tracks sound as good as they possibly can across all playback devices. We carry a range of mastering tools at Sweetwater from all the top brands, and different processors provide different features.


Mastering Tools FAQs


Why do you need a mastering EQ?


Are you looking to play with specific frequencies? An equalizer used in the mastering phase can make your music sound clearer and better.


Do I need a special mastering compressor or limiter?


Do you want your tracks to be dynamically balanced? Sweetwater also carries mastering units with compressors and limiters. Compressors help you deliver tracks that are well balanced when it comes to volume. On the other hand, if you want your sound to really pack a punch but want to avoid signal peaking, then check out our limiters. A mix of compression and limiting produces a mix that’s punchy and balanced.


What are sonic enhancers and how do I use them for mastering?


Do you need your bass to be stronger? Then grab one of our bass enhancers! Many instruments lose a bit of their zest when recorded, and that goes double for bass. If you don’t want your tracks to sound flat and muddy, then you can enhance your bass simply and easily with one of our bass-enhancing mastering units. We also carry normalizers and sonic mixers if you want an even-better-sounding album!


What else should I consider when shopping for mastering tools?


When selecting your mastering unit, another important thing to keep in mind is that various units have varying numbers of channels. For a beginner, a single- or dual-channel unit is the way to go. If you want or need more, then we offer units that have up to 16 channels. Before buying, also double-check measurements to make sure you get a unit that will fit into your rack or workstation. Our convenient sidebar navigation allows you to filter your choice by processor type, number of channels, and rack spaces so you can be sure you’re getting exactly what you need.


How do I shop for audio mastering equipment at Sweetwater?


Sweetwater makes finding your first or next piece of mastering hardware easy! Check out our refined search tool on the left-hand side of the screen to help narrow down your search. If you aren’t sure which mastering processor best fits your needs and skill level or just want to learn more about mastering, then check out our helpful articles, where we answer questions like what is the difference between mixing and mastering? Explore three easy mastering tips for a better final mix and much more.


Get Started with New Mastering Gear


Ready to purchase your first or next device for your mastering chain? Sweetwater makes it easy. If you don’t know where to begin, then reach out to our highly knowledgeable Sweetwater Sales Engineers at (800) 222-4700. They’ll help you choose the right mastering tools for you!



If you prefer to shop completely online, then Sweetwater’s website has tools to narrow down your mastering processor choices based on your desired specs, such as the brand, price range, processor type, required rack space, and much more. Select your preferred specs in our convenient product filter and explore your options!

Learn More

What are the most popular brands for Mastering on Sweetwater.com?


What are the most popular Mastering on Sweetwater.com?


  1. Rupert Neve Designs Master Bus Transformer

    13 reviews

    $3,999.00

  2. Rupert Neve Designs Portico II Master Buss Processor - Black

    28 reviews

    $5,299.00

  3. Cranborne Audio Carnaby HE2 Harmonic EQ

    3 reviews

    $1,799.00

  4. TC Electronic Clarity M Stereo and 5.1 Audio Loudness Meter

    19 reviews

    $319.00

  5. elysia xmax Stereo Master Bus Compressor

    4 reviews

    $2,249.00

Why shop Mastering at Sweetwater.com?


With a massive selection of Mastering, free shipping, a free 2-year warranty, 24/7 access to award-winning support - and more - Sweetwater gives you more than any other retailer! If you have any questions about Mastering, make sure to give your personal Sales Engineer a call at (800) 222-4700.