Cearvol Diamond X1 vs Nuheara IQBuds Max
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Cearvol Diamond X1
The Cearvol Diamond X1 is a budget-priced OTC hearing aid that earned a B grade with a SoundScore of 3.7/5 in our lab testing, placing it in the top 45% of OTC devices. At $199, it represents an accessible entry point for those exploring hearing amplification. The Diamond X1's standout performance is in music streaming, scoring 4.1/5—a strong result that sits 2.18 points above the OTC category average. This makes it notably capable for users who prioritize audio entertainment through their hearing devices. Feedback handling is also excellent at 4.5/5, meaning users should experience minimal whistling during normal use. However, speech performance presents limitations. Speech in quiet scores a mixed 2.8/5, and speech in noise registers at 1.7/5. While both metrics technically sit above category averages (+0.03 and +0.22 points respectively), they remain low in absolute terms—important context for anyone prioritizing conversation clarity. Own-voice comfort is another weakness, scoring 1.7/5, which is 0.81 points below the category average and may affect how natural users sound to themselves. The Diamond X1 is best suited for budget-conscious consumers who value music streaming quality and aren't heavily reliant on challenging listening environments. Those who prioritize speech understanding in noise or natural own-voice perception may want to consider alternatives in this price range, such as the higher-scoring Elehear Beyond or Apple AirPods Pro 2.

Nuheara IQBuds Max
The Nuheara IQBuds Max is a budget-priced OTC hearing aid that earns a B grade with a SoundScore of 3.3/5 in our lab testing. Priced at $499, this visible-in-ear device from 2021 ranks #46 of 65 OTC hearing aids tested, placing it in the top 69% of its category. The standout feature of the IQBuds Max is its exceptional music streaming performance, scoring 4.3/5—a strong result that sits 2.38 points above the category average. For users who prioritize audio entertainment alongside hearing assistance, this device delivers notably better streaming fidelity than most OTC alternatives. However, speech performance presents a mixed picture. Speech in quiet scores 2.0/5, falling 0.78 points below the category average. Speech in noise is essentially at par with competitors at 1.5/5, which is above average for the category but low in absolute terms. Own voice comfort also trails the category average by 0.31 points with a score of 2.2/5. Feedback handling scores a solid 3.4/5 in absolute terms, though this falls 1.14 points below the category average. The IQBuds Max is best suited for users who value music and audio streaming quality over speech clarity, particularly those seeking an affordable entry point into amplification. Competing devices in this price range—including the Elehear Beyond (4.34/5) and Apple AirPods Pro 2 (4.04/5)—offer stronger overall sound performance for similar investment.
We independently review each item we recommend and appreciate your trust and support. When you buy through our links, we may earn a commission. Learn More.
Performance metrics
Scale 1-5 (Tuned)
Lab metric by fit
Scale 1-5 (Tuned)
Speech level
Adjust input dB (Tuned)
Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Fitting configuration for tuned fit