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 engineered for pristine vocal tracking, acoustic instrument recording, and drum mic'ing. Its lightweight, ergonomic design—just 115 grams and 146 mm in length—fits seamlessly into fixed studio setups or mobile session work. The microphone captures transparent, detailed audio with excellent off-axis rejection, rewarding disciplined mic technique with honest, studio-grade recordings that translate across playback systems.
Recording & Mix Integration
A flat 20–20,000 Hz frequency response ensures accurate tonal capture with no colored character obscuring source detail, while the 77 dB-A signal-to-noise ratio and 17 dB-A equivalent noise level keep the noise floor low during tracking and overdubs. Maximum SPL handling of 132 dB (1% T.H.D.) or 142 dB with the 10 dB pad engaged provides sufficient headroom for close-mic'ing loud sources without saturation or unwanted distortion artifacts.
Studio Control & Workflow
The cardioid polar pattern delivers controlled source isolation and natural rejection of room reflections and off-axis leakage, essential for capturing clean, focused takes in untreated or mixed-purpose spaces. A switchable 10 dB preattenuation pad and 12 dB/octave high-pass filter below 75 Hz eliminate stage-time parameter hunting, while the modular capsule system enables future sonic customization. Balanced XLR 3-pin connection with 9–52 V phantom power compatibility integrates directly into standard professional recording chains and interfaces.
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 session-ready flexibility, delivering the transparent, artifact-free sound that professional recording and studio production demand.
More Information
| Condition | New |
|---|
Reviews
At a Glance
The AKG C391 B is a flat-response cardioid condenser that captures vocals and acoustic instruments with crystalline clarity and minimal coloration, ideal for home studio and professional session tracking. Its 77 dB-A signal-to-noise ratio and 17 dB-A equivalent noise floor keep backgrounds clean in demanding recordings, while the switchable pad and high-pass filter provide quick corrective tools without reaching for plugins. The balanced XLR connection and modular design integrate seamlessly into standard studio chains and reward careful mic placement with honest, transparent results.
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.
Do I pay sales tax on this order?
We collect sales tax only on orders shipped to California. Orders shipped to any other US state are charged $0 sales tax at checkout when you buy direct from our website. On this item that is roughly $35 less out the door than the same listed price at a national retailer or on a marketplace. Marketplaces such as eBay, Reverb and Amazon collect sales tax in nearly every state as marketplace facilitators no matter who the seller is, so the same item at the same price costs less bought direct. Free US shipping and 30-day returns are included. Some states ask buyers to self-report use tax on out-of-state purchases.
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