Eargo 8 vs Signia Silk Charge&Go IX

The Eargo 8 is a premium-priced OTC hearing aid at $2,399, featuring an invisible-in-ear design with rechargeable batteries. In our lab testing, it earned a C grade with a SoundScore of 2.8/5, placing it in the top 60% of the OTC hearing aid category. Sound performance shows a mixed profile across our tested scenarios. Own-voice comfort is a notable strength, scoring 3.2/5—a solid result that sits 0.71 points above the category average. Feedback handling also performs well in absolute terms at 4.2/5, though this falls slightly below the category average. However, speech-in-noise performance is low at 0.3/5, sitting 0.83 points below average, which may limit effectiveness in challenging listening environments. Speech-in-quiet performance is mixed at 2.6/5, essentially matching the category average. Music streaming scored 0.0/5 in our testing, falling 1.93 points below the category average—a significant limitation for users who value audio quality when streaming from their phone. At this premium price point, the Eargo 8 faces stiff competition. Within the same price range, the Eargo 6 and Eargo 7 both achieved higher scores. Additionally, several lower-priced alternatives like the Blaids BlaidsX Pro (3.20/5) and HearingAssist Control (3.04/5) outperformed it in our testing. The Eargo 8 may appeal to users who prioritize the invisible form factor and own-voice comfort over speech-in-noise performance, but those seeking maximum value or strong performance in noisy environments should explore alternatives.

The Signia Silk Charge&Go IX is a premium prescription hearing aid in the invisible-in-ear style, currently available at $3,298. In HearAdvisor's lab testing, it earned a B grade with a SoundScore of 3.7/5, ranking #25 of 36 prescription hearing aids tested. This device demonstrates notable strengths in speech intelligibility. Speech in quiet scored an excellent 4.5/5, measuring 1.07 points above the category average. Speech in noise also exceeded the category average by 1.05 points, though at 2.6/5 the absolute performance remains mixed. Feedback handling is strong at 4.3/5, providing stable performance during typical daily activities. The Silk Charge&Go IX shows significant limitations in two areas. Own-voice comfort scored 1.5/5, falling 1.25 points below the category average—a consideration for users sensitive to how their own voice sounds. Music streaming scored 0.0/5, measuring 2.64 points below the category average, making this device unsuitable for users who prioritize audio streaming quality. Professional tuning improved overall performance from a normalized Initial Score of 3.5/5 to a Tuned Score of 4.2/5. At this price point, several competitors in the same range—including the Oticon Intent (4.75/5) and Phonak Sphere Infinio (4.65/5)—achieved higher overall scores. The Silk Charge&Go IX may appeal to users prioritizing maximum discretion and speech clarity who don't require streaming functionality.