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Product Comparison

Eargo 8 vs HSKLock Hearing Aid

Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Uses Official HearAdvisor Lab Data
Eargo 8  Hero
EargoSoundGrade B

Eargo 8

The Eargo 8 is a premium-priced OTC hearing aid featuring an invisible-in-ear design with rechargeable batteries, priced at $2,399. In our lab testing, it earned a B grade with a SoundScore of 3.4/5, placing it in the top 71% of the OTC Hearing Aid category. Sound performance presents a mixed picture. The Eargo 8 delivers solid speech-in-quiet performance at 3.1/5, scoring 0.27 points above the category average—making it a reasonable choice for conversational settings without background noise. Own-voice comfort is another strength, measuring 0.69 points above average at 3.2/5, which may appeal to users who are sensitive to hearing their own voice through hearing aids. Feedback handling is strong in absolute terms at 4.2/5, though slightly below the category average. However, the device shows notable weaknesses in challenging listening environments. Speech-in-noise performance is low at 1.2/5, falling 0.27 points below the category average—users who frequently encounter noisy restaurants, busy offices, or social gatherings may find this limiting. Music streaming scored 0.0/5, significantly below the category average, making this device unsuitable for users who prioritize audio entertainment through their hearing aids. The Eargo 8 is best suited for users who prioritize discreet, invisible-in-ear styling and primarily need assistance in quieter conversational settings. However, at this premium price point, buyers should be aware that similarly-priced alternatives and even some lower-cost options may offer comparable or better overall sound performance.

HSKLock Hearing Aid Hero
HSKLockSoundGrade B

HSKLock Hearing Aid

The HSKLock Hearing Aid is a budget-priced amplification product available for $69, earning a B grade with a SoundScore of 3.0/5 in our lab testing. This behind-the-ear device uses disposable batteries and represents an entry-level option in the amplification category. In our standardized testing, the HSKLock demonstrates excellent feedback handling at 5.0/5, scoring 0.72 points above the category average. This means users are unlikely to experience whistling or squealing during normal wear. Own-voice comfort scores 2.8/5, which is slightly above the category average but mixed in absolute terms—wearers may notice some occlusion effects when speaking. Speech performance presents significant limitations. Speech in quiet scores 1.5/5, falling 0.63 points below the category average, while speech in noise scores 1.0/5, sitting 0.37 points below average. These low absolute scores indicate limited benefit for understanding conversation in our test framework. Music streaming is not supported, scoring 0.0/5. The HSKLock ranks #5 of 8 amplification products tested, placing it in the top 50% of its category. At this price point, it may suit buyers seeking basic amplification with reliable feedback control, though those prioritizing speech clarity should consider the trade-offs carefully.

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Performance metrics

Scale 1-5 (Tuned)

Lab metric by fit

Scale 1-5 (Tuned)

Speech in quietNew
Eargo 83.1
HSKLock Hearing Aid1.5
Speech in noiseNew
Eargo 81.2
HSKLock Hearing Aid1.0
Own voice
Eargo 83.2
HSKLock Hearing Aid2.8
Feedback handling
Eargo 84.2
HSKLock Hearing Aid5.0
Music streaming
Eargo 80.0
HSKLock Hearing Aid0.0
Overall fit score
Eargo 83.5
HSKLock Hearing Aid3.0

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Audio scenes

Using MUSHRA scenes (Tuned)

Fitting configuration for tuned fit

Eargo 8HSKLock Hearing Aid
Ear CouplingPower Dome with Slits
Ear CouplingClosed Dome
ReceiverIntegrated in device
Receiver
Fitting FormulaProprietary manufacturer default
Fitting Formula
Listening ProgramRestaurant
Listening Program
Volume Setting100% (Max volume)
Volume Setting
Software VersionSoftware v5.7.0
Software Version
Tuning AdjustmentsOn-ear assessment performed, Noise Reduction set to High, Treble at 2 above minimum, Bass at maximum, Other settings at manufacturer defaults
Tuning Adjustments