The Best AI Mixing and Mastering Tools for Musicians (2025)

Modern musicians are increasingly turning to AI-driven mixing and mastering tools to achieve professional-quality sound without the traditional cost or time investment. Mixing balances individual tracks (vocals, instruments, etc.) in a song, while mastering applies the final polish to the mixed stereo track for distribution. These stages, once solely the domain of skilled audio engineers, can now be handled by intelligent software. Artificial intelligence in music production analyzes your audio and applies expert-crafted adjustments for loudness, EQ, compression, and other effects – all in a matter of minutes, with results often comparable to human engineers. This article will compare the most relevant AI-based mixing and mastering platforms available today, with a detailed look at why Roex stands out as the best option. We’ll also examine other top contenders like Masterchannel, LANDR, eMastered, and Waves Online Mastering, and provide a side-by-side comparison of their features.

How AI Is Changing Mixing and Mastering

AI-powered audio tools have revolutionized the music production workflow. They offer several key benefits for musicians and producers:

• Affordability: Hiring professional engineers or using high-end studios for mixing/mastering can cost hundreds per track. AI services, in contrast, are far more budget-friendly (and sometimes free), making pro-level sound accessible to indie artists.

• Speed and Efficiency: What might take an engineer many hours can be accomplished by AI in minutes. In fact, you can often upload a song and get a mastered version back almost instantly, dramatically accelerating the production process.

• Consistency: AI mastering algorithms apply reliable processing every time, ensuring a cohesive sound across tracks. This consistency is great for album projects where you want all songs to maintain a similar sonic character.

• Ease of Use: No audio engineering knowledge is required – just upload your tracks and let the AI do the heavy lifting. Many tools also offer preset styles or allow a reference track input, so the AI can mimic the sound of a target song or genre.

Of course, human mixing/mastering engineers still bring a creative touch that AI can’t fully replicate. But as we’ll see, today’s AI tools have become impressively advanced. They’re excellent for demos, independent releases, and even as a starting point before fine-tuning a mix manually. Now, let’s take a look at the top AI-based mixing and mastering services available, how they compare, and why Roex leads the pack.

Top AI Mixing & Mastering Tools Compared

1. Roex – Your All-in-One AI Mixing & Mastering Engineer

Roex’s Automix interface emphasizes effortless mixing with AI – “Achieve a professional, balanced mix effortlessly with AI—no studio or complex plugins needed.”

Roex is a cutting-edge platform that functions as an AI mixing engineer and mastering engineer in one. Unlike most services that handle only mastering, Roex can take your individual stem tracks (vocals, drums, guitars, etc.), balance them, apply effects, and produce a polished final master. In other words, Roex uses AI to mix and master your music, automatically adjusting levels, EQ, compression, and more to create a cohesive track​ (aimusicpreneur.com). It tailors its processing to your song’s genre and even lets you upload a reference track to mimic the sonic character of a favorite song. Once the mix is done, Roex proceeds to master the track, ensuring it meets industry loudness standards and sounds great on all systems.

Why Roex stands out: The ability to do full multi-track mixing is Roex’s killer feature. For independent musicians who may not have mixing expertise, Roex essentially replaces the need for a studio mixing engineer. You can drop in your stems and get a balanced mix in minutes. The service is also extremely fast – for example, a three-minute song can be processed in about one minute. Despite this speed, the quality is on par with professional work. Users often report that Roex’s output sounds as good as, or even better than, masters from LANDR (afroplug.com), which is high praise considering LANDR’s reputation.

Another big advantage is Roex’s pricing model. You can use the platform and create unlimited mastered previews for free, paying only when you’re satisfied and want to download the full-quality mix/master file. In fact, Roex is entirely free to use until you need the final download, whereas many competitors require a subscription or upfront payment​ . This makes it especially appealing to budget-conscious artists. A paid high-quality download from Roex costs around €5.99, so even if you have to pay, it’s on par or cheaper than most per-track mastering fees.

Roex also offers customization options. You have control over the target loudness (choose settings optimized for streaming platforms or for louder radio play), and you can tweak the tonal balance via preset “styles.” If you provide a reference track, Roex will analyze it and try to match your master’s EQ curve and loudness to that reference. This is great for achieving a specific vibe or fitting your song into a playlist seamlessly. The platform’s interface is user-friendly – simply upload stems, choose your settings, and let the Automix engine work its magic. For those who want to refine their mix, Roex provides a Mix Check feature (accessible in its interface) where you can review the AI’s decisions and make minor adjustments if needed.

Overall, Roex delivers a level of service that goes beyond what other AI mastering tools offer. It’s essentially like having a virtual sound engineer in your computer. Many musicians have found that Roex’s balanced mixes translate well across different listening systems, and the masters come out loud, clear, and ready for release. Given its comprehensive capabilities, high quality, and low cost, it’s clear why Roex tops our list as the best AI-based mixing and mastering tool.

2. Masterchannel – Professional AI Mastering with Grammy-Worthy Results

Masterchannel’s web interface invites users to “Try the Best Sounding Mastering AI,” highlighting its use by Grammy-winning producers and promise of engineer-quality results.

If you’re looking for AI mastering that has true professional pedigree, Masterchannel is a name to know. This platform focuses on the mastering stage (it assumes your mix is already done) and uses artificial intelligence to finalize your track to commercial quality. Masterchannel has positioned itself as a premium solution – notably, the company collaborated with Grammy-winning engineer Wez Clarke to create what they call the world’s first AI clone of a top mastering engineer. This “Wez Clarke AI” mode allows users to have their music mastered in the style of Clarke’s own work, essentially capturing his expert decision-making in an algorithm (musicbusinessworldwide.com). For the user, that means you can get a sound akin to a Grammy-level engineer’s touch, instantly.

Using Masterchannel is straightforward. You upload your finished mix (a stereo audio file), and the AI will analyze and apply processing to optimize loudness, EQ balance, stereo width, and dynamic range. The system is optimized for modern streaming platforms – it will ensure your master meets loudness norms and sounds great whether it’s played on Spotify, Apple Music, or just through headphones or speakers. The interface is cloud-based (no software install needed) with simple drag-and-drop functionality. Masterchannel provides unlimited free previews of your mastered track; you only need to pay or subscribe to download the full master.

One of Masterchannel’s distinguishing features is the audio quality it delivers. You can get masters in high-resolution audio formats (up to 24-bit, 192 kHz). The processing chain behind the scenes was developed with input from industry veterans. In fact, Masterchannel is used by Grammy-winning producers, which speaks to its credibility and results. The platform’s claim is that its AI mastering yields results “as good as a human mastering engineer.” While that may be subjective, many users report being very satisfied with the clarity, punch, and loudness of their masters. The Wez Clarke AI mode, in particular, adds a subtle analog-style finesse that can make a track sound radio-ready.

Pricing and plans: Masterchannel operates on a freemium model. You can preview any number of tracks for free. To actually download a master, you’d choose a plan – the most popular is around $15/month, which allows unlimited mastered downloads. This is a bit pricier than some competitors, but consider that they’re offering top-tier quality. There’s also a pay-per-track option if you prefer not to have a subscription (for example, a single master might cost around $10 if bought individually). For those who opt into the higher-tier plan that includes the Wez Clarke AI, Masterchannel even shares royalties from that feature with the engineer (an interesting model that shows they value real engineer input in their AI).

In practice, Masterchannel is ideal for artists and producers who already have a good mix but want a quick, pro-level master. It doesn’t provide mixing of stems – you need to feed it a final mix. The platform shines in its ease of use (just a couple of clicks) and the consistency of results. If your mix is solid, Masterchannel will likely make it sound louder, cleaner, and more polished, suitable for release on any platform. The fact that it’s backed by renowned audio engineers gives confidence that the processing is “musically informed” and not just arbitrary AI guesswork.

Bottom line: Masterchannel is a powerful yet easy-to-use AI mastering service that can save you time while delivering top-notch sound. It’s a great choice if you want fast, professional mastering without hassle, and its unique collaboration with a Grammy-winning engineer’s profile sets it apart from the pack.

3. LANDR – The Original AI Mastering Powerhouse

LANDR’s mastering platform has evolved over the years, even offering a DAW plugin now – “LANDR Mastering Plugin puts the music industry’s most respected AI mastering engine right in your DAW for fast, pro-level masters.”

No discussion of AI mastering is complete without LANDR, the company that arguably started the trend of automated online mastering. Launched in the mid-2010s, LANDR has since mastered over 20 million tracks for around 4 million users globally​ (landr.com), making it the most widely used AI mastering service. LANDR’s extensive user base means its AI has been trained on countless songs across genres, constantly refining its algorithms. For musicians, LANDR represents a tried-and-true solution for instant mastering.

How LANDR works: You upload your final mix to the LANDR cloud platform (via their website or desktop app). The AI analyzes your track’s sonic profile – things like frequency balance, dynamic range, and tonal characteristics – then applies a chain of processing to enhance the sound. You get to choose from a few mastering “intensity” presets (for example, low, medium, or high intensity, which affect how aggressively it compresses and limits the track). There are also style options like “warm” or “open” that subtly change the EQ curve. In recent updates, LANDR added a reference mastering feature, letting you supply a reference track so the AI can attempt to match its EQ and loudness. Once processing is done (usually under a minute), you can preview the result. LANDR allows free previews, so you can hear the mastered version before deciding to pay or use a credit for the download. Masters can be downloaded as WAV or MP3 (including high-res formats if you have a pro plan).

One strength of LANDR is its consistency and ease. The interface is simple and the AI’s decisions are generally musical and appropriate. It tends to make tracks sound “release-ready” – that means the master will be louder, with a solid low-end, crisp highs, and a balanced midrange. LANDR’s processing often includes multi-band compression, EQ tweaks, stereo widening, and adaptive limiting. Over the years, the team behind LANDR has incorporated feedback from professional mastering engineers, so the algorithm avoids common pitfalls (for example, it tries not to squash the dynamics too much unless you choose a very high intensity). The result is that most users find LANDR masters to be a noticeable improvement over their raw mix, requiring no technical effort on their part.

Pricing: LANDR operates on a subscription model, though one-off mastering credits are also available. A popular plan is about $9/month (billed annually) which gives unlimited standard-quality masters; higher tiers offer HD WAV masters and other perks like distribution services. The convenience of a subscription is that you can master as many tracks as you want – great for producers who are making a lot of music. For someone who only needs a single track mastered occasionally, LANDR also sells individual masters (prices around $10-$15 per track for WAV format). There’s a free tier that lets you preview tracks and even download a limited number of low-res MP3 masters, which is useful for testing.

LANDR in 2025: In addition to the web service, LANDR now offers a Mastering Plugin that you can use directly in your DAW (Digital Audio Workstation). This shows how far they’ve come – integrating the AI engine into home studio workflows so you don’t even have to go to the website. The plugin allows you to master tracks within software like Ableton or Pro Tools, hearing changes in real time. This can speed up the process of finishing a song. Moreover, LANDR has expanded into a suite of tools (they offer sample libraries, collaboration hubs, and music distribution), making it a one-stop shop for independent artists.

For mixing, LANDR doesn’t do full stem mixing like Roex, but they do provide a “smart mixing” tool for adjusting two-track mixes (for instance, a vocal and instrumental) and a variety of audio effects that can be applied intelligently. Still, LANDR is best known for mastering.

When to use LANDR: If you want a trusted, hassle-free mastering solution with a long track record, LANDR is an excellent choice. It’s especially useful for those who release music frequently and want a consistent sound every time. Many artists use LANDR to quickly master demos or draft releases, and some use it for official releases too. While purists might say a human engineer could do better in certain complex cases, LANDR’s quality has steadily improved and often surprises skeptics. Given its pioneering status and continuous innovation, LANDR remains one of the top AI mastering tools on the market.

4. eMastered – AI Mastering by Award-Winning Engineers

eMastered’s homepage highlights its mission: “Master Your Track, Instantly” – an online engine made by Grammy-winning engineers and powered by AI, offering quick and easy mastering for all.

eMastered is another popular AI-based mastering service that has gained a strong reputation, in large part due to the pedigree of its creators. The platform was created by renowned Grammy-winning engineers and powered by robust AI technology, aiming to give musicians a way to achieve professional-grade sound without expensive studios​ (10web.io). In essence, eMastered tries to encapsulate the expertise of top mastering engineers into an accessible online tool.

Using eMastered is as simple as dragging and dropping your unmastered track onto their web app. The AI will analyze the audio and in seconds produce a mastered version that you can preview. One thing users appreciate is the unlimited preview feature – you can try out as many tracks as you like and listen to the mastered results for free. Payment is only required when you decide to download the mastered file. This is great for A/B comparing how different songs sound after mastering, or tweaking your mix and testing again, without incurring costs each time.

Features and customization: eMastered’s philosophy is “fast, easy, and sounds incredible,” and for the most part it lives up to that. The default mastering is fully automatic: the AI adjusts frequency balance, tightens the bass, adds clarity to highs, controls dynamics, and raises the overall loudness to a competitive level. The output typically sounds louder, cleaner, and more “glued together” than the original mix. For users who want a bit more control, eMastered offers some advanced options on paid plans. These allow you to tweak the intensity of the mastering process – for example, you can adjust bass, mids, treble, the amount of compression, stereo widening, etc., via simple sliders. It’s not as involved as doing it manually with plugins, but it gives power users the ability to fine-tune the master to taste (perhaps you want a slightly brighter master, or a slightly less compressed sound – these adjustments are possible). Additionally, eMastered supports reference track mastering: you can upload a reference song and the AI will attempt to match its tonal profile when mastering your track, which is useful for aiming for a particular sound profile or genre standard.

Another benefit eMastered provides is a library and share feature – when you master tracks, they’re saved to your account in a library, and you can share streaming links of your mastered songs directly with others. This is a handy way to get feedback on your masters from collaborators or friends before you download or release them. They even offer basic track statistics in the library (like how many plays your shared track link got).

Quality and use cases: eMastered’s sound is often praised for being musically balanced. Because it was built by actual mastering professionals (one of the co-founders is Grammy-winning engineer Smith Carlson, known for his work with pop and urban artists), the algorithm seems tuned to avoid overdoing any single aspect. The low-end comes out punchy but not boomy; the highs are crisp but not harsh. In blind tests, eMastered’s output frequently holds its own against other top services. It works across genres – whether it’s a hip-hop track that needs heavy bass or an acoustic ballad that needs warmth and subtle loudness lift, the AI adjusts accordingly. That said, if a mix has serious issues (like extremely quiet vocals or an imbalance), no mastering AI can fully fix that; eMastered is best used on a well-balanced mix to begin with.

Pricing: eMastered’s model is subscription-based. Plans start around $13/month (billed annually) for unlimited mastering downloads, which is similar to LANDR’s pricing. They occasionally offer monthly plans or even lifetime deals for those who prefer not to subscribe long-term. If you don’t subscribe, you can still use it and pay per track download (prices vary, roughly $15 per track for a WAV). Considering a professional human master can cost anywhere from $50 to $200, eMastered is a cost-effective alternative. The fact that you can experiment for free and only pay when satisfied is a big plus.

In summary, eMastered is a fantastic AI mastering option for musicians who want a blend of simplicity and some level of control. It brings bona fide studio expertise into an AI tool, which results in polished masters suitable for release. If you value the pedigree of the team behind the tool and want an AI service that has been crafted by people who truly understand mastering, eMastered is definitely worth trying out.

5. Waves Online Mastering – AI Mastering by an Industry Leader

The Waves Online Mastering interface allows users to tweak styles (like “Precise”, “Organic”, etc.) and even add a reference track, making the mastering process interactive despite being AI-driven.

Rounding out our list is Waves Online Mastering, an AI-based service from Waves Audio – a company well-known for its professional audio plugins used in studios worldwide. Waves brought their decades of audio engineering expertise into the AI mastering arena, creating a service that merges algorithmic processing with settings informed by top mastering engineers. Notably, Waves developed this platform with help from a Grammy-winning engineer (Piper Payne), whose ears and techniques helped fine-tune the AI’s behavior​ (aimusicpreneur.com). For users, that means you’re benefitting from both cutting-edge tech and real-world audio know-how.

Using Waves Online Mastering: You start by uploading your finished mix to the Waves mastering portal. The interface will prompt you to select a mastering style. Waves offers several preset styles or “flavors” for the master, such as Precise (for transparent, clean mastering), Organic (a more analog, warm feel), Elevated, Depth, Presence, etc. These essentially adjust the EQ and compression character. You can also choose to add an optional “Add Tone” setting (which introduces subtle harmonic enhancement if desired). Another powerful feature is the ability to upload a reference track. If you have a song whose sound you love, you can provide it and the Waves AI will attempt to match your track’s loudness and overall tone to that reference. After choosing the settings, you hit “Create Master” and the AI processes the track.

The result is presented for preview with a handy A/B comparison function – you can toggle between the original and mastered version to hear the differences. Waves allows you to preview the entire mastered track for free. If you like it, you can then pay to download it. The output formats include WAV and MP3, and you can specify if you want it optimized for certain loudness targets (like streaming loudness normalization standards).

What sets Waves apart: Being an offshoot of a pro audio company, Waves Online Mastering often impresses users with its sound quality and clarity. The AI was trained on thousands of hours of mastered music and incorporates a virtual chain of high-end mastering processors (Waves has a suite of renowned plugins for EQ, compression, limiting, etc., which likely form the backbone of the AI’s processing). The result is that the masters tend to sound natural yet polished. Low frequencies are tight, the mix gets that “glue”, and the loudness is competitive without being overly squashed (unless you intentionally push it). The involvement of an experienced engineer in development means the AI is less likely to make odd choices; instead it mimics the subtle moves a human might make. In reviews, producers have noted the impressive reference matching capability – if you use a reference track, Waves does a solid job of getting in the ballpark of that reference’s EQ curve​.

One limitation mentioned in some critiques is that Waves offers fewer manual tweaks during the process compared to something like eMastered’s advanced mode. Essentially, you pick a style preset but you don’t directly adjust, say, the EQ by yourself – you trust the AI and the preset. This isn’t necessarily a drawback for those who want a quick solution, but very detail-oriented users might wish for more control. Still, the presets cover a good range of outcomes, and you can always re-master the track with a different style or reference if the first try isn’t perfect.

Pricing: Waves Online Mastering is pay-per-track (no subscription required). It’s roughly $5.99 per master (sometimes they have bundle deals or plugin bundle incentives). Since it’s on-demand, this is great for someone who only needs occasional masters. You can preview for free, so you only pay if you’re happy – a fair approach. This cost is quite affordable given Waves’ pro audio pedigree, and it’s lower than what a typical human mastering session would cost.

Who should use Waves Online Mastering: This service is ideal if you want top-notch mastering quality from a trusted industry brand and prefer to pay per track. It’s also useful if you like to have a say in the general style of your master (through presets or reference tracks) but still want the convenience of AI doing the heavy lifting. For example, an electronic music producer might use the Precise setting for a clean club master, while a singer-songwriter might try the Organic setting to retain warmth. The consistent quality and the reputation of Waves give users confidence that the end result will be broadcast-ready. Even mix engineers have used Waves’ AI as a second opinion or starting point for masters, which speaks volumes about its capability.

Other Notable AI Mastering Tools: In addition to the above top five, there are a few other AI-driven services worth mentioning. BandLab Mastering is a completely free online mastering tool integrated into the BandLab platform – it’s simple and effective for basic needs, though it offers only a few fixed style presets and no mixing of stems. Some music distribution services, like Amuse, have also integrated AI mastering (Amuse’s mastering is actually powered by Masterchannel’s engine on the backend). For producers who prefer to work within their DAW, iZotope Ozone (while not an online service) deserves a shout – it’s a plugin suite that includes a Mastering Assistant using AI to suggest settings, effectively bringing AI into a traditional mastering workflow. As AI technology continues to advance, we can expect even more options to emerge, but the tools we’ve covered in detail are currently leading the field.

Conclusion

The rise of AI in music production has undoubtedly lowered the barrier for musicians to achieve professional-quality sound. AI mixing and mastering tools can save countless hours and dollars, allowing creators to focus more on the music itself. After a thorough comparison, Roex clearly stands out as the best all-in-one AI mixing & mastering solution – it offers capabilities that go beyond the competition by handling entire mix sessions and delivering polished masters, all at minimal cost. Roex’s combination of versatility, quality, and user-friendly design makes it a game-changer for independent artists.

That said, the other top tools each have their strengths: Masterchannel excels in providing fast, high-end mastering with a touch of Grammy-winning expertise; LANDR brings years of refinement and reliability in AI mastering, backed by huge usage data; eMastered blends expert knowledge with accessible AI for great-sounding masters; and Waves Online Mastering leverages pro audio pedigree to produce excellent results on a per-track basis. Depending on your specific needs – whether you require full mixing, the absolute highest mastering quality, unlimited track processing, or just a quick one-off master – there’s an AI tool above that can cater to it.

In 2025, trusting an AI with your music’s sound has become not only common but often wise. You can achieve a radio-ready mix and master at the click of a button. For musicians, this means you can iterate quickly, release more music, and maintain control over your creative vision without technical roadblocks. The tools we’ve explored here are empowering artists worldwide, and Roex in particular is pushing the envelope of what’s possible by essentially putting a virtual mixing/mastering engineer in your hands.

Final takeaway: If you’re a musician or producer, it’s worth experimenting with these AI platforms to augment your workflow. Many offer free trials or previews, so you have nothing to lose. You might find that the master you get from an AI service is perfectly on par with that done by a human – or at least close enough that it serves your project well. For the best overall experience and results, give Roex a try first (you can always preview for free). And for comparison, test your track through Masterchannel, LANDR, eMastered, or Waves. By doing so, you’ll hear firsthand which AI mastering flavor suits your music. In the end, the goal is to have your songs sound their absolute best and ready to impress listeners on any platform – and AI is now a reliable partner in achieving that goal.

Resources

1. Christopher Wieduwilt, “I Tested The 4 Best AI mixing and mastering tools in 2025 – Here’s What Happened.” The AI Musicpreneur, 2025. aimusicpreneur.com

   
   

2. Afroplug, “Roex: Free AI Mixing and Mastering Tool – Viable LANDR Alternative.” Afroplug.com, Mar. 6, 2025. afroplug.com

   
   

3. Daniel Tencer, “Grammy-winning engineer Wez Clarke’s music-making skills have been ‘cloned’ by an AI platform. He loves it.” Music Business Worldwide, Jan. 23, 2024. musicbusinessworldwide.com

   
   

4. LANDR, “Online Mastering API – LANDR’s market leader status at a glance.” LANDR.com (Press info). landr.com

   
   

5. 10Web, “eMastered Review: Features, Pros, Cons, & Alternatives.” 10Web.io (AI Tools Review), Nov. 2024. 10web.io