Only if you want Bluetooth streaming, hands-free calling, or Auracast — Silk IX has none of these since it isn't Bluetooth-enabled at all. If wireless features don't matter to you, Silk IX delivers a similarly discreet, comfortable fit for less.
Oticon Zeal vs. Signia Silk Charge&Go IX
Check out our comparison of the Oticon Zeal vs Signia Silk Charge&Go IX. Listen to audio samples and see how the two hearing aids differ in terms of sound performance, features, accessories, and more.
Published Updated
Quick Verdict
AI summarizedSummarized with AI assistance from our human-researched product information, in-lab testing, objective sound measurements, and expert ratings.
The real choice is whether Bluetooth streaming and hands-free calling are worth roughly $1,300 more: Zeal has them and a modest edge in noise, while Silk IX skips wireless audio entirely to hit a lower price.
Zeal
Choose the Oticon Zeal if you want Bluetooth streaming and hands-free calling in a nearly invisible CIC, along with a stronger speech-in-noise result (2.9/5 vs 2.6/5 tuned) and finer fitting control (24 adjustment bands vs 20).
Silk Charge&Go IX
Choose the Signia Silk Charge&Go IX if you don't need wireless streaming and want a similarly discreet, comfortable CIC for roughly $1,300 less per pair than the Zeal.
What actually separates them
AI summarizedWireless streaming and calling
SpecZeal streams audio and supports hands-free calling over Bluetooth LE Audio (plus Auracast broadcast), while Silk IX has no Bluetooth at all — you get app control via coded signals but no music or call streaming.
Price
PriceSilk IX runs about $1,300 less per pair than Zeal, a meaningful gap if streaming isn't a priority for you.
Speech-in-noise performance
Lab measuredBoth improve substantially with professional tuning, but Zeal's tuned speech-in-noise score of 2.9/5 edges out Silk IX's 2.6/5 — a real-world difference in noisy rooms, though neither is a strong performer outright.
Fitting flexibility
SpecZeal gives your audiologist more adjustment bands (24 vs 20) to fine-tune across the frequency range during fitting.
Product Overview
Zeal
Silk Charge&Go IX
Form Factor
Expert Rating
Score
4.4
Score
3.8
User Rating
5.01 reviews
2.45 reviews
Hearing Loss Level
MildModerateSevere
MildModerate
Product Features
Hands-freeRechargeableiPhoneAndroidIP68
Rechargeable
Expert Ratings
Compare comprehensive test results and expert opinions.
Zeal
Silk Charge&Go IX
HearingTracker Score
Zeal
4.4ABOVE AVERAGE
Oticon Zeal is an instant-fit, nearly invisible, rechargeable prescription hearing aid with AI-driven processing and modern Bluetooth LE Audio connectivity for Android and Apple iOS.
Read full reviewSilk Charge&Go IX
3.8AVERAGE
The Signia Silk Charge&Go IX is a groundbreaking, rechargeable completely-in-canal (CIC) hearing aid designed for people with mild to moderate hearing loss. It offers up to 28 hours of battery life, instant fit with soft silicone ear tips, and wireless control via the Signia app, but lacks Bluetooth streaming and can be challenging to handle due to its small size.
Read full reviewHearAdvisor SoundScore
Zeal
4.7EXCELLENT
Oticon Zeal achieved a SoundScore of 4.7/5 and a SoundGrade of A in HearAdvisor lab testing. It ranked #6 of 39 Prescription Hearing Aid devices tested. The Prescription Hearing Aid category average SoundScore was 4.19/5.
Silk Charge&Go IX
3.7AVERAGE
Signia Silk Charge&Go IX achieved a SoundScore of 3.7/5 and a SoundGrade of B in HearAdvisor lab testing. It ranked #32 of 39 Prescription Hearing Aid devices tested. The Prescription Hearing Aid category average SoundScore was 4.19/5.
Build Quality
Zeal
5.0EXCELLENT
Zeal offer excellent moisture and dust protection with an ingress rating of IP68. Both the hearing aids and case are well build and ready for daily use.
Silk Charge&Go IX
4.7EXCELLENT
Signia Silk C&G IX have an impressive build quality, featuring a top-of-the-line IP68 ingress rating, which is crucial for nearly invisible hearing aids. They also come with a durable portable charging case.
Battery
Zeal
4.2ABOVE AVERAGE
With a battery life of up to 20 hours, Zeal should last you all day.
Silk Charge&Go IX
4.4ABOVE AVERAGE
Silk IX provide up to 20 hours of use per charge which is exceptional given their extremely small size. Recharging takes up to 4 hours, which is longer than some other models, but this isn't a significant drawback given their all-day battery life.
Bluetooth
Zeal
5.0EXCELLENT
I found Zeal to offer easy and stable wireless connection. Their audio quality while streaming music, and during hands-free calling, was good and comparable to other prescription hearing aids.
Silk Charge&Go IX
Not yet rated by our experts
App Features
Zeal
4.5EXCELLENT
I found the Companion app easy to navigate and use. Other prescription hearing aid companies offer more in-depth health features, but there is still plenty of opportunity to customize settings from your mobile device. The HearingFitness component is also a nice feature for those who like to actively track their progress.
Silk Charge&Go IX
3.4BELOW AVERAGE
While Silk IX hearing aids are not Bluetooth compatible, they still work with Signia's app using high-frequency coded signals. This is a valuable addition, although the communication is less stable than Bluetooth and the app offers fewer features compared to other Signia models.
Comfort
Zeal
4.8EXCELLENT
Oticon Zeal were extremely comfortable and lightweight in my ears. In general, hearing care providers can make numerous physical changes to prescription hearing aids like Zeal to improve comfort.
Silk Charge&Go IX
4.5EXCELLENT
I found Silk IX very comfortable for an instant-fit nearly invisible hearing aid. Your hearing care provider should ensure they are fitted for optimal comfort and hearing benefit.
Design
Zeal
5.0EXCELLENT
Zeal are sleek, easy to use, in-the-ear prescription hearing aids. They are nearly invisible in the ear which is extremely impressive given their battery life and wireless capabilities.
Silk Charge&Go IX
5.0EXCELLENT
Silk IX is another unique offering from Signia, featuring an instant fit design with silicone ear tips that is nearly invisible. Its extremely small and discreet design may, however, pose challenges for those with limited dexterity and or vision.
Value
Zeal
3.4BELOW AVERAGE
Oticon Zeal has a value score of 3.4/5 based on lab performance and public display price.
Silk Charge&Go IX
2.9BELOW AVERAGE
Signia Silk Charge&Go IX has a value score of 2.8/5 based on lab performance and public display price.
Handling
Zeal
5.0EXCELLENT
Zeal are easy to use and adjust with the Oticon Companion app. I had no issues making adjustments while testing them.
Silk Charge&Go IX
4.0AVERAGE
I did not run into any issues while using Silk IX hearing aids. They are very easy to use once setup by your hearing care provider. Silk also have large color indicators making it easy to distinguish the left from the right hearing aids.
Pro Support
Zeal
5.0EXCELLENT
Prescription hearing aids like Zeal are fit by hearing care providers so you should receive quality care. The Oticon Companion app also opens the possibility for remote programming and virtual follow-up appointments.
Silk Charge&Go IX
4.0ABOVE AVERAGE
You should receive quality hearing care and support from your provider. The Signia App should further enhance your experience with AI help and remote assistance should your provider offer telehealth services.
Lab Recordings
Listen to direct output recordings from our acoustic test lab.
Zeal
Silk Charge&Go IX
Busy Cafe
Hear this scene unaided, for comparison
Zeal
Silk Charge&Go IX
Quiet Office
Hear this scene unaided, for comparison
Zeal
Silk Charge&Go IX
Streaming Music
Hear this scene unaided, for comparison
Zeal
Silk Charge&Go IX
Lab recordings not yet available
HearingTracker partners with HearAdvisor to provide recordings and performance data from an acoustic laboratory that follows standard scientific procedures. All hearing aids are fitted and performance-tested for mild sloping to moderate hearing loss. All audio samples cutoff above 10kHz.
Accessories
Compatible accessories for each hearing aid
Zeal
Silk Charge&Go IX
Remote Control
None
miniPocket
Enables push-button remote control of hearing aid functions.
Signia App+2
The Signia App provides a remote control, directional hearing control, telecare access, and access to connectivity and streaming settings.
Hardware
Zeal
Silk Charge&Go IX
Bluetooth® Audio
- Made for iPhone (MFi)
- Android (ASHA)
- Bluetooth® Low Energy (LE)
- Bluetooth® Auracast™
No
Hands-Free Calling
- Made for iPhone (MFi)
- Android (ASHA)
No
IP Rating
IP68
No
Rechargeable Batteries
Lithium-ion
Lithium-ion
Tap Controls
- Volume Control
- Change program
- Accept/end calls
- Tinnitus program
No
Software Features
Zeal
Silk Charge&Go IX
Adjustment Bands
24
20
Adjustment Synchronization
No
e2e wireless 4.0
AI Noise Removal
Neural Noise Suppression: 12 dB / 6 dB
No
Better Ear Focus
Better-Ear Priority
No
Directionality
No
Binaural OneMic directionality
Ear Simulation
Virtual Outer Ear: 3 configurations
No
Echo Reduction
No
Auto EchoShield
Extended bandwidth
Yes
12kHz
Extended Dynamic Range
Clear Dynamics
Yes
Feedback Suppression
Feedback ShieldMoreSound Optimizer™
Feedback cancellation
Frequency Lowering
Speech Rescue™
No
Handling noise reduction
Wind & Handling StabilizerAlso covers Wind Noise Reduction
No
Listening Programs
4
6
New User Adaptation
Adaptation Management
No
Noise Reduction
No
SoundSmoothing™: 3
Processing Channels
64
48
Soft Speech Boost
Soft Speech Booster
No
Spatial Awareness
Spatial Sound™: 4 estimators
No
Spatial Noise Cancellation
Spatial Balancer: 100%
No
Streaming Bass Boost
Power bass
No
Sudden Loud Noise Reduction
SuddenSound Stabilizer: 6 Configurations
No
Tinnitus Relief
Tinnitus SoundSupport™
Yes
Unique Amplification Strategy
Environment classifier5 configurationsMoreSound Amplifier 3.0MoreSound Intelligence 3.0Level 1Sound Enhancer3 configurations
Advanced Focus Streams3Dynamic Soundscape Processing 3.05/5Speech & Noise Management5/5SpeechStabilizer
Wind Noise Reduction
Wind & Handling StabilizerAlso covers Handling noise reduction
eWindScreen binaural
Bottom Line
AI summarizedThe Verdict
Both are tiny instant-fit CICs from established brands, both need professional tuning to perform (each gains meaningfully from initial fit to tuned fit), and neither should be bought expecting hi-fi music streaming or best-in-class noise performance — Zeal's tuned speech-in-noise score of 2.9/5 and Silk IX's 2.6/5 are both only modest in absolute terms even though they beat the site average.
The decision really comes down to wireless features: if you want to stream calls and audio and can absorb the roughly $1,300 premium, Zeal is the more capable device; if you don't need Bluetooth and want to save money on a similarly discreet, comfortable fit, Silk IX gets you there for less.
Which is right for you?
Neither device is a slam-dunk value pick — Zeal scores 3.2/5 and Silk IX 2.4/5 on value in our testing, both below the 3.6/5 site-wide average — so go in expecting to pay for discretion and comfort rather than a bargain.
What to ask at your fitting
AI summarizedAsk about real-ear measurement for either device
Both Zeal and Silk IX show sizeable gains from initial fit to tuned fit (Zeal's speech-in-noise jumps to 2.9/5, Silk IX's to 2.6/5), so insist your provider performs real-ear measurement rather than relying on first-fit defaults.
Confirm your streaming needs before paying the Zeal premium
The roughly $1,300 gap over Silk IX only makes sense if you'll actually use Zeal's Bluetooth streaming, hands-free calling, or Auracast broadcast reception.
Discuss own-voice comfort tradeoffs at fitting
Both Zeal (2.0/5) and Silk IX (1.5/5 tuned) show own-voice comfort compromises when tuned for speech clarity — ask your provider how they'll balance this for your ears.