Crimson Audio Blue SM57/SM58 Modification

The Crimson Audio Blue SM57 & SM58 Modification is a custom-tuned handle that transforms the legendary Shure SM57 or SM58 into a smoother, more present, and vocal-focused recording tool. This "Vocal Personality" delivers enhanced clarity, focus, and vocal performance while retaining the trusted reliability of the microphone platform you already know and love. Simple to install and exclusively available from Front End Audio!

Known as the "Vocal Personality" within the Crimson Audio Mod Squad lineup, the Blue modification handle is designed for engineers, vocalists, podcasters, broadcasters, and content creators seeking a more polished and voice-focused sound from their microphone. Whether you're recording studio vocals, podcast content, voiceovers, broadcast applications, or live performances, Blue delivers enhanced vocal clarity and presence while helping voices naturally sit where they belong in a mix. The Blue Personality utilizes an active transformerless design that reshapes the sonic character of your microphone, producing a smoother overall presentation with improved vocal focus and articulation. Many users describe the Blue modification as bringing additional refinement and presence to vocal recordings while maintaining the versatility that has made the SM57 and SM58 industry standards for decades.

Simple Installation
Installation is simple and requires only a few solder connections, making it an excellent option for DIY enthusiasts. Prefer a turnkey solution? Front End Audio also offers professionally assembled microphone options, allowing you to enjoy the benefits of the Orange Personality right out of the box.

Explore The Other Personalities
The Blue Personality is just one member of the Crimson Audio Mod Squad lineup. Each personality offers its own unique sonic character, allowing you to tailor your trusted Shure SM57 or SM58 to different recording situations. Visit the Crimson Audio Mod Squad page to learn more about all four personalities and discover which one is right for your recording style.

• Orange "Vintage Personality" – Warm, full, smooth, and vintage-inspired.
• Yellow "Rock Personality" – Punchy, forward, energetic, and built to cut through the mix.
• White "Studio Personality" – Detailed, open, refined, and ideal for critical instrument recording.
• Blue "Vocal Personality" – Smooth, present, focused, and optimized for vocal applications.

Crimson Audio Blue SM57/SM58 Modification Applications

• Studio Vocals
• Live Vocals
• Podcasting
• Voiceover Recording
• Broadcast Applications

Crimson Audio Blue SM57/SM58 Modification Options

Front End Audio has made it easy to build the modification handle of your choice. However, if you have any questions please reach out to us and we will be happy to assist you in deciding what options best fit your needs.

• Select Your Cartridge: Add either an SM57 or SM58 cartridge (with or without grill) to your handle. Many customers already have an extra SM57 or SM58 in their studio that they're happy to dedicate to this modification. If this is your situation, then there is no need to add a cartridge. However, if you don't want to cannibalize one of your existing microphones then this is your solution.
• Add a Microphone Clip: The Shure A25D Microphone Clip is a durable, vibration-resistant mount designed to securely hold your favorite Shure dynamic microphones in place. Featuring a break-resistant construction and an adjustable angle design, the A25D makes it easy to position your mic exactly where you need it - whether on stage or in the studio. Compatible with industry-standard mic stands, it’s a simple, reliable upgrade that ensures stability and optimal performance from your microphone.
• Add a Granelli Audio Labs Handle: The Granelli Handle option is a 90-degree elbow that works seamlessly with the Crimson Audio modifications. It gives your mic a 90-degree angle to help improve your mic-placement options on drums, guitar amps and bass cabinets. This popular addition expands your microphone placement options and adds even more versatility to your setup.
• Modification: This unique modification is not only affordable, but easy to do yourself. It only takes a couple minutes with some very basic soldering skills. However, if you want to skip the extra work or don't have the tools, then we are happy to provide the modification for you. When Front End Audio does the modification we will QC all parts, assemble the microphone, QC the finished microphone, secure it in its own zippered mic bag (only when Front End Audio does the modification), and get it on the way to you typically within 1-2 business days - so you are ready to go right out of the box!

Crimson Audio Blue SM57/SM58 Modification Features

• Vocal Personality – Smooth, present, focused, and optimized for vocal applications
• Compatible with Shure SM57 and SM58 microphones
• Active transformerless design
• Enhanced vocal clarity and articulation
• Smooth and focused vocal presentation
• Excellent for vocals, podcasting, voiceover work, broadcasting, and live performance
• Simple installation with only a few solder connections required
• Color Coded XLR connector for easy identification
• Fully reversible modification
• Designed and Manufactured in the USA
• Exclusive from Front End Audio

Crimson Audio Blue SM57/SM58 Modification Includes

• Crimson Audio Blue SM57 & SM58 Modification Handle
• Selected Options
• Installation Instructions
• Manufacturer Warranty