When comparing live vocal microphones, the Shure SM58 and Shure Beta 58A are two of the most common options singers debate. They look similar and are both dynamic microphones built for the stage, but they perform very differently once the volume comes up.
I’ve used both mics in real live settings — from loud bar gigs to rehearsals and controlled stages — and this comparison focuses on how they actually behave during live vocals, not just what the spec sheet says.
If you’re deciding between the SM58 and Beta 58A for live vocals, this breakdown will help you choose the right mic for your stage, voice, and performance style.
Musicians often search for “SM58 vs Beta 58A,” “Shure Beta 58A vs SM58,” or the “difference between the Shure SM58 and Beta 58A” when trying to choose the right vocal microphone for live performance. While both are industry-standard dynamic mics, they behave very differently on stage depending on volume, monitoring, and vocal style.
Quick Verdict:
If you want maximum reliability and feedback resistance for loud, unpredictable live stages, the Shure SM58 is the safer choice. If you want more presence, higher output, and tighter on-stage focus, and you have solid mic technique and good monitor placement, the Shure Beta 58A can help your vocals cut through dense mixes.
Quick Overview: SM58 vs Beta 58A for Live Vocals
Shure SM58
- Dynamic microphone
- Warm, forgiving sound
- Excellent feedback resistance
- Extremely durable
- Found in nearly every live venue
Shure Beta 58A
- Dynamic microphone
- Brighter, more detailed sound
- Higher output level
- Tighter pickup pattern
- Less forgiving of poor mic technique
If you’re also weighing dynamic versus condenser options for live vocals, see my Shure SM58 vs Beta 87A comparison for live vocals, which breaks down how these mics differ on real stages.
Comparison Table: SM58 vs Beta 58A
| Feature | Shure SM58 | Shure Beta 58A |
|---|---|---|
| Mic type | Dynamic | Dynamic |
| Sound character | Warm, smooth | Bright, present |
| Pickup pattern | Cardioid | Supercardioid |
| Feedback resistance | Excellent | Very good (placement matters) |
| Output level | Standard | Hotter signal |
| Forgiveness | Very forgiving | Less forgiving |
| Best for | Loud, unpredictable stages | Controlled stages, confident singers |
Sound Quality Differences
The SM58 delivers a familiar, balanced vocal tone that works across many genres. It doesn’t exaggerate highs or lows, which makes it forgiving if your mic technique isn’t perfect.
The Beta 58A has more high-end presence and output, helping vocals cut through a dense mix. That extra clarity can sound great, but it also reveals inconsistencies in technique more easily than an SM58.
Feedback and Stage Volume
Feedback resistance is one of the SM58’s biggest strengths. Its cardioid pattern and smoother response make it easier to manage on loud stages with floor wedges.
The Beta 58A uses a supercardioid pattern, which can reduce feedback when monitors are placed correctly. However, poor monitor placement or side fills can cause feedback issues faster than with an SM58.
If you’re comparing these mics as part of a broader search for the best vocal microphones for live performance, feedback control and gain-before-feedback should be a major part of your decision—especially on loud stages.
Durability and Reliability
Both microphones are built for live use, but the SM58 has legendary durability. It’s the mic you can rely on night after night, even in rough environments.
The Beta 58A is still rugged, but many singers reserve it for more controlled stages where sound precision matters more than maximum toughness.
Which Mic Should You Choose?
Choose the Shure SM58 if:
- You play loud or unpredictable stages
- You move around while singing
- You want maximum reliability and forgiveness
- You sing rock, punk, or high-energy styles
Choose the Shure Beta 58A if:
- You want more vocal clarity and presence
- You have solid mic technique
- You use in-ear monitors or well-placed wedges
- You sing pop, worship, or modern rock
Final Verdict
Neither mic is universally “better” — the right choice depends on your stage and technique.
The SM58 remains the safest and most forgiving option for live vocals in almost any environment. The Beta 58A rewards good technique with more detail and cut, but demands better stage control.
For a broader look at other strong options, see my guide to the best live vocal microphones for different performance situations.