AKG C391 B High Performance Condenser Microphone
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- SKU
- 2442Z00010
Description
AKG C391 B High Performance Condenser Microphone
The AKG C391 B is a compact cardioid condenser built for live performance and studio recording. Its lightweight, ergonomic design—just 115 grams and 146 mm in length—mounts securely on any stage rig or sits comfortably in a compact recording setup. The microphone captures transparent, detailed audio with excellent feedback rejection, rewarding careful mic technique with honest, studio-quality results you can rely on night after night.
Audio Performance
A flat 20–20,000 Hz frequency response ensures accurate reproduction across the full spectrum, while the 77 dB-A signal-to-noise ratio and 17 dB-A equivalent noise level keep background noise minimal in demanding live and recording environments. Maximum SPL handling of 132 dB (1% T.H.D.) or 142 dB with the 10 dB pad engaged gives you headroom for loud sources without distortion, whether you're miking an amp or capturing close-range vocals.
Design & Connectivity
The cardioid polar pattern provides controlled pickup and natural rejection of off-axis sound, critical for isolating your source and minimizing stage bleed. A switchable 10 dB preattenuation pad and 12 dB/octave high-pass filter below 75 Hz offer quick corrective tools for problem frequencies, while the modular capsule system allows future customization as your needs evolve. Balanced XLR 3-pin connection with 9–52 V phantom power compatibility integrates seamlessly into standard professional signal chains and touring rigs.
Key Features
- Cardioid condenser microphone with precise directional pickup
- Frequency range: 20–20,000 Hz
- Sensitivity: 10 mV/Pa
- Maximum SPL: 132 dB (1% T.H.D.) / 142 dB with pad engaged
- Signal-to-noise ratio: 77 dB-A
- Equivalent noise level: 17 dB-A
- Switchable 10 dB preattenuation pad
- Switchable 12 dB/octave high-pass filter (below 75 Hz)
- Phantom power: 9–52 V, 2 mA current draw
- Balanced XLR male 3-pin connection; 200 ohm impedance
- Compact dimensions: 19 mm diameter × 146 mm length; 115 g weight
- Modular design with interchangeable capsule system
The C391 B combines precision engineering with practical flexibility, delivering the transparent, artifact-free sound that live performance and studio recording demand—built tough enough to handle whatever your setlist throws at it.
More Information
| Condition | New |
|---|
Reviews
At a Glance
The AKG C391 B is a compact cardioid condenser built for studio-quality recording in both fixed and portable setups, with crystalline clarity, honest flat response, and excellent feedback rejection. Choose it for vocal and acoustic instrument work where transparent sound and minimal noise matter—the switchable pad and high-pass filter give you quick control without coloration. Its lightweight design and modular capsule system make it reliable for session work, live miking, and gigging applications where dependability counts.
Who This Is For
Great for
- ✓ Studio Sessions
- ✓ Home Recording
- ✓ Live Performance
- ✓ Vocals
- ✓ Acoustic Instruments
Not the best pick for
- – Beginner practice
- – Casual home use
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What is B-Stock, and does it affect performance?
B-Stock means the microphone is fully functional and performs identically to new units, but may have minor cosmetic imperfections from store demo or warehouse handling. Audio quality and specifications are unaffected.
Is the C391 B suited for vocals and acoustic instruments?
Yes. Its cardioid pattern, flat 20–20,000 Hz response, and excellent feedback rejection make it ideal for capturing vocals, guitars, and acoustic sources with transparent, honest reproduction in studio and live settings.
What does the switchable pad and high-pass filter do?
The 10 dB pad reduces signal level on loud sources (raising maximum SPL to 142 dB), and the 12 dB/octave high-pass filter below 75 Hz removes low rumble and handling noise without reaching for EQ plugins.
Will this microphone work with my existing studio or live setup?
Yes. It uses a standard balanced XLR male 3-pin connection and requires 9–52 V phantom power (2 mA draw), making it compatible with any professional preamp, mixer, or interface with phantom power.
Can I upgrade or modify the microphone later?
Yes. The C391 B features a modular capsule system that allows future customization and interchangeable capsules, so you can adapt the mic to different recording needs down the road.
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