Linner Mercury vs RCA In-Ear

The Linner Mercury is a budget-priced OTC hearing aid that earns a B grade with a SoundScore of 3.1/5 in our lab testing. Priced at $387, it ranks #60 of 65 devices in the OTC Hearing Aid category, placing it in the top 91% of the category. In our testing, the Mercury shows a mixed performance profile. Its standout strength is excellent feedback handling at 4.7/5, which is 0.16 points above the category average—meaning users are unlikely to experience whistling or squealing during normal use. However, speech clarity metrics fall below category norms: speech in quiet scores 2.2/5 (0.62 points below average), and speech in noise scores a low 1.0/5 (0.48 points below average). Own-voice comfort also scores low at 1.6/5, sitting 0.91 points below the category average. Music streaming is a notable weakness, scoring 0.0/5—a full 1.92 points below the category average. Users who prioritize streaming audio from their phone should consider alternatives. The device uses a rechargeable battery and features a visible in-ear design with power dome coupling. At this price point, several competitors offer stronger overall performance. The Linner Mercury may appeal to budget-conscious consumers who prioritize feedback-free operation over speech clarity and streaming quality, but those seeking better speech understanding in challenging environments should explore higher-scoring options in this price range.

The RCA In-Ear is a budget OTC hearing aid priced at $249, earning a C grade with a SoundScore of 2.8/5 in our lab testing. This places it near the bottom of the OTC category at #64 of 65 devices tested. Speech performance is a significant weakness for this device. Speech in quiet scores just 1.0/5, falling 1.79 points below the category average, while speech in noise also scores 1.0/5, sitting 0.48 points below average. These low absolute scores indicate limited benefit for understanding conversation in most listening situations. Music streaming scored 0.0/5, measuring 1.92 points below the category average—this device is not suitable for audio entertainment. The RCA In-Ear does show strength in feedback handling, scoring an excellent 5.0/5, which is 0.46 points above the category average. Own-voice comfort is mixed at 2.6/5, essentially matching the category average with only a 0.09-point advantage. The rechargeable battery design offers convenience for daily use. At this price point, consumers have substantially higher-performing alternatives. Devices like the Elehear Beyond (4.36/5), Apple AirPods Pro 2 (4.06/5), and several others in the same budget range deliver meaningfully better speech clarity and overall sound quality. The RCA In-Ear may appeal to those prioritizing feedback-free operation above all else, but most users seeking improved hearing will find better value elsewhere in the OTC market.