Mastering is the final step of audio post-production. The purpose of mastering is to balance sonic elements of a stereo mix and optimize playback across all systems and media formats. Traditionally, mastering is done using tools like equalization, compression, limiting and stereo enhancement. It is the final set of tweaks before music is released. Click here to find out more.

Mastering can make your tracks or podcasts sparkle - more like the songs you hear on the radio. It is usually done as part of post production. Most people will hire a mastering engineer even if they record in a nice studio. Maztr makes this service instant and affordable.

Sure does :) Sign up for a free account and try it out for yourself.

Now let's be clear, we're not trying to put traditional mastering engineers out of business. We don't claim to be better than having an actual human with years of training analyze each second of your track, but we're perceivably close.

Think of us like auto-focus on digital cameras, but for music instead of photographs. The auto focus doesn't make someone a professional photographer, but they sure can take a lot better pictures with it!

Audio Stem Separation splits the final mix of an audio track into its discrete audio elements, such as vocals, bass, drums and piano. The resulting stem tracks, also known as split tracks or simply stems, will typically be stereo audio files containing the isolated components of each particular element. In its simplest form, you can use audio stem separation to split a track into separate vocals and instrumental streams. Click here to find out more.

Click here to visit our Audio Stem Separator. All paid Maztr accounts have full access and can upload unlimited 100MB files, while free users have a limit of one 5MB file upload per day.

Yes. Click here to visit our Free Audio Resources page. All paid Maztr accounts have full, unlimited access, while free users have a few limits.

Sure! Just sign up for a free account, master some of your tracks and upgrade when you're ready.

Nope! You can change or cancel your Plan at any time. No contracts, no commitments.

Nope! You only need a credit card if you'd like to upgrade to a paid plan or upgrade a track to download a 24-bit WAV. There's no credit card needed to use the Free Plan to master MP3s.

We offer 4 types of plans - Free, MP3, Pro and Pro Plus - each with different features.

Each paid plan also offers monthly and yearly payment options. Please scroll down for more information.

Sure can! You can change your Plan or downgrade to a free account at any time by clicking on the "Plan" option in your account.

Please note, if you downgrade, we do not offer refunds on payments already made. Also, to keep our costs low, all masters from your paid account will be deleted.

Yes, sign up for a free account and master a low-res 192kbps MP3 for FREE.

If you want to master a high-res 320kbps MP3 or a 24-bit HD WAV, there are 2 options to master a single track:

1. If you already have a free account, click the "Upgrade Track" button in your Project to get all the Pro Plus features for your chosen track.
2. If you don't have an account, click here to jump straight in and master a Hi-Res track. This option allows you to master a track up to MB in size with all the Pro Plus features.

Yes, Pro and Pro Plus accounts can master unlimited 16-bit WAVs as well as 24-bit HD WAVs and high-res 320kbps MP3s. Upgraded tracks also have these options.

Our intelligent algorithms will make your tracks sparkle, but unlike some services, you have full control.

Free accounts can master unlimited low-res 192kbps MP3s for FREE. If you want to master a high-res 320kbps MP3 or a 24-bit HD WAV, you can pay a one-time $4.99 to master that single track.

Pro and Pro Plus accounts can master unlimited high-res 320kbps MP3s or 16-bit and 24-bit HD WAVs. MP3 accounts can master unlimited high-res 320kbps MP3s.

All of our accounts come with the ability to master an unlimited number of tracks.

Free accounts can store up to 2 tracks, MP3 accounts can store up to 3 tracks, Pro accounts can store up to 5 tracks, and Pro Plus accounts have unlimited storage. If you don't want to upgrade, you can always delete older tracks to free up more storage for newer ones.

Free accounts have a maximum file size of 50MB, MP3 accounts have a maximum of 150MB, Pro accounts have a maximum of 300MB, and Pro Plus accounts have a maximum of 5000MB.

Your tracks will be stored as long as your account is active. If you downgrade to a free account or your subscription is cancelled, all masters from your paid account will be deleted to keep our costs low.

Yes, click here to see the current offers.

Free Accounts don't require any payment method!

If you want to upgrade your track or account to get more features, we accept Visa, Mastercard, American Express, Paypal and Bank Wire Transfers. Contact our Customer Service Team if you need more information.

Sure can! Click here to use our free online Audio File Editor. This is a web-based audio and waveform editing tool which you can use to record new audio tracks, modify existing tracks or convert file formats.

Click here to use our free online Audio File Editor. This editor allows you to convert most file formats, ready for mastering. These include MP3, WAV, AAC, AIFF, OGG and FLAC.

Our free Audio File Cleaner and Audio File Denoiser can also convert file formats.

Sure can! Many of our customers use Maztr to refresh their old music tracks from decades past and make them sparkle. In particular, MP3 tracks ripped from old CDs can get a new lease of life when you run them through Maztr's intelligent algorithms. Our MP3 Accounts are perfect for this purpose.

Sure can! Click here to use our free online Audio Tag Editor. This editor allows you to edit the metadata tags for your mp3, ogg and m4a audio files.

You can! You can do anything you'd like with the masters you make with Maztr. We only charge you for your membership and retain no rights to your tracks.

To help you get started promoting your music, our Blog lists some of the best promotional methods which are likely to give you great results. Click here to find out more.

Not at all. We'd love it if you did :) , but no one has to know you used Maztr.

Yes, Pro Plus Accounts can have their own public web page and playlist for every track and project. You can also upgrade a single track to access its own public web page.

To set this up, just enable web pages in your track settings. Click here to find out more or click here to see examples.

On a computer or laptop, you can download a mastered track by right-clicking on the MP3 or WAV button, then select the "Save Link As…" option.

The process is a little different on mobile devices. In Chrome, long press the relevant button then select "Download Link". In Firefox, open the relevant file in Firefox's player, long press on the player then select "Save Audio".

When you upload a track for mastering, our system processes it using the settings you have chosen at that time. If you want to change those settings, you need to remaster your track to apply the new settings.

If you have a free account and don’t have remaster access, you need to upload your track again with the new settings to apply the changes. Alternatively, you can upgrade that single track or upgrade your account to get remaster access.

Although you can change your Plan or downgrade to a Free Account at any time, we do not offer refunds on payments already made.

If you need to change your credit card or set up payment with Paypal, simply click here to send us new payment details securely.

Our Billing Provider will try to process the payment a total of 3 times before your Monthly Subscription is cancelled and all masters are deleted from your account.

If you need to change your credit card or set up payment with Paypal, simply click here to send us new payment details securely.

If you paid with a credit card, you can downgrade to a free account at any time by clicking on the "Plan" button in your account. If you paid with Paypal, you’ll need to log into your Paypal account to cancel it. We’re sorry we can’t do it from here.

Please note, downgrades are processed immediately and we do not offer refunds on payments already made. Also, to keep our costs low, all masters from your paid account will be deleted immediately, however you can upload new tracks and continue using your account on the Free Plan.

Sure can. You can upgrade and downgrade whenever you like, as often as you like.

However please note if you downgrade, we do not offer refunds on payments already made and all masters from your paid account will be deleted immediately to keep our costs low.

Sorry no. To keep our costs low, all masters are deleted from your account when you downgrade. You will need to upload your tracks and master them again.