Key takeaways 💡:
- The new KK 104 U and KK 105 U capsules are universal: they bring the Neumann sound to wireless systems from other brands (Sony, Shure*, Mipro ACT, Lectrosonics).
- The 104 U (cardioid) delivers an open sound and handles stage movement extremely well.
- The 105 U (supercardioid) offers extreme isolation and maximum rejection for dense sound environments.
- Derived from the KMS series, they combine studio-grade quality, excellent feedback resistance, and professional touring durability.
*Compatible Shure transmitters: Axient Digital, ULX-D, QLX-D, SLX-D Series
In the live sound world, one truth always remains: the capsule defines the sound. No matter which wireless system you use, it determines clarity, presence, intelligibility, and how your voice cuts through the mix.
For more than two decades, Neumann capsules — especially the KK 104/105 series used by artists such as Adele and Katie Melua — have been a benchmark on the world’s biggest stages. Until now, there was one limitation: accessing that level of excellence required a Sennheiser transmitter.
With the new universal KK 104 U and KK 105 U capsules, Neumann finally makes its iconic sound available to wireless systems from other brands. Sony, Lectrosonics, Shure, Mipro… artists and rental companies can now keep their existing infrastructure while upgrading to true Neumann studio sound. Here’s a complete guide to understanding these new capsules, their strengths, their differences, and most importantly how to choose the one that will elevate your voice.
A major milestone in wireless audio: the Neumann sound goes universal
Until now, Neumann only offered versions compatible with Sennheiser (KK 104/105 S and 204/205 series), which are still in production today. With the new “U” line (for Universal), the brand finally opens the door to a massive market: artists and rental companies using other wireless systems but seeking the authentic Neumann sound.
Why this release really matters
Because Neumann condenser capsules bring three major advantages:
Superior clarity
They use a true condenser capsule, whereas most stage microphones rely on dynamic capsules (more rugged, but less detailed).
As a result:
- smooth frequency response,
- open, airy high frequencies,
- fast transient response,
- a more “alive” and intelligible vocal sound.
Most importantly: less EQ is required, further improving feedback resistance.
True professional-grade live durability
Contrary to the myth of “fragile” condenser microphones, the KK 104 U and KK 105 U handle extremely high SPLs without distortion, resist humidity, and feature an integrated pop filter.
Exceptional gain before feedback
Their highly stable polar patterns (cardioid or supercardioid), independent of frequency, offer outstanding control in complex environments.
If you’re using a mid-range wireless system, upgrading to a high-end capsule like the KK 104 U or KK 105 U can dramatically transform your sound — without replacing your entire setup.
The KK 104 U BK strikes the perfect balance between natural tone, openness and positional tolerance. It is one of the most effective upgrades to instantly improve your live sound. Its cardioid polar pattern is designed for expressive singers who move on stage, turn their head, interact with the crowd or step off the stage.
What defines the KK 104 U BK
- An open, breathable sound.
- Excellent off-axis response with minimal coloration.
- Perfect for dynamic performances.
- Integrated low-cut filter → clean low end even at very close proximity.
- Studio-grade quality derived from the KMS series.
The capsule remains stable even if the artist slightly moves away or changes angle — a huge advantage in live situations.
Who is it for?
- Pop / mainstream
- Folk, soul
- Melodic rap
- Highly expressive singers
- TV shows and club stages
When should you choose it?
- If you want a natural vocal sound and move a lot on stage.
- If you are used to cardioid capsules and want to step up in quality.
Neumann condenser capsules feature a much faster transient response than dynamic capsules. Attacks are sharper, consonants more defined, and vocals cut through the mix more easily — without increasing FOH volume.
For large stages, the KK 105 U BK is clearly the professionals’ choice. If you perform in high-SPL environments — powerful drums, loud guitar amps, orchestras or large stages — the KK 105 U BK is your best ally. It delivers an extremely close, studio-like vocal sound, even in the middle of a dense mix.
Thanks to its supercardioid polar pattern, it provides very strong side rejection and isolates the voice like very few wireless capsules can.
Key strengths
- Extremely direct and precise sound.
- Clear separation between voice and instruments.
- Maximum rejection → outstanding feedback resistance.
- Exceptional intelligibility on complex stages.
- Rugged capsule, ideal for intensive touring.
Who is it for?
- Rock / hard rock / metal
- Powerful gospel vocals
- Technical singers
- Large-scale performances
- TV stages with close instrument proximity
When should you choose it?
- If you want a clear, isolated vocal presence.
- If you frequently struggle with feedback.
- If you perform in dense or orchestral sound environments.
Supercardioid capsules are more directional — keep a stable mic-to-mouth axis to fully exploit the capsule’s potential. A few degrees of rotation can significantly affect tonal balance.
KK 104 U BK vs KK 105 U BK comparison
| Criteria | KK 104 U BK (Cardioid) | KK 105 U BK (Supercardioid) |
|---|---|---|
| Sonic signature | Open, natural, wide sound | Very direct, focused and precise sound |
| Movement tolerance | Very high, ideal for expressive singers | More axis-sensitive, requires greater stability |
| Instrument isolation | Moderate isolation | High isolation, strong rejection of lateral sounds |
| Feedback resistance | Good | Excellent, ideal for complex stages |
| Ideal use | Clubs, mid-size stages, TV shows | Festivals, large stages, high-SPL environments |
| Artist profile | Dynamic performers, pop/mainstream, mobile vocals | Powerful vocals, rock/metal, gospel, technical singers |
| Mic proximity | Clean low end even at close range | Controlled low end, enhanced vocal focus |
| Versatility | Highly versatile | More specialised, designed for demanding conditions |
The 104 is more versatile, while the 105 is more specialised. Choose based on your environment, not just your voice.
A rugged design built for touring
Both capsules feature:
- Hardened steel grille for maximum durability.
- Highly effective internal pop filter (plosives & moisture).
- Shock-mounted suspension → reduced handling noise.
- Easy cleaning (essential for rental inventories).
They are supplied with:
– A padded nylon pouch
– A safety guide and a quick-start guide
These details make a real difference on the road, when your microphone is handled, packed, transported and used night after night.
Wireless compatibility
The KK 104 U BK and KK 105 U BK are compatible with:
- Sony
- Lectrosonics (all models)
- Mipro ACT
- Shure (excluding BLX and GLX-D)
A major advantage for rental companies and professionals who cannot replace their entire transmitter fleet, but still want to upgrade their sound quality.
FAQ – Neumann KK 104 U BK and KK 105 U BK capsules
1. Do these capsules replace the Sennheiser versions?
No. The KK 104/105 S and 204/205 series remain in production. The U versions simply expand the range to support other brands.
2. Are these capsules fragile?
No. They are designed for live use: hardened steel grille, integrated pop filter, high feedback resistance and excellent SPL handling.
3. Can they be used on stage without EQ?
They generally require less EQ than dynamic capsules thanks to their smooth, consistent frequency response.
4. How do you choose between the two?
104 = mobility, natural tone, versatility.
105 = precision, isolation, high-SPL environments.
5. Are they suitable for streaming and TV?
Yes. They deliver superior intelligibility and excellent consistency, even off-axis — ideal for TV productions.
6. Which Shure wireless systems are not compatible?
The BLX and GLX-D series.
Final verdict
With the KK 104 U BK and KK 105 U BK, Neumann finally makes its legendary expertise accessible to all wireless users. One offers total freedom, the other surgical isolation — but both share:
- a studio-grade condenser capsule,
- tour-ready durability,
- exceptional intelligibility,
- and the globally renowned Neumann sound signature.
If you want to elevate your vocal sound without changing your entire wireless system, these two capsules will likely deliver the biggest impact on your live performance.
