Neoteck Charging Noise & Power Issues: Review Why Avoid

Data basis: This report is based on dozens of written reviews and several video demonstrations collected between 2020–2026. Most feedback came from written reviews, supported by video demos and product Q&A. The patterns below are drawn from recurring buyer reports and hands-on clips.

Top failures

Does the amp buzz or hiss while charging?

Immediate regret: Buyers report audible interference exactly when the amp is plugged in to charge while in use.

Severity note: This problem is both manufacturer-noted and commonly reported, so it is not an isolated claim.

Context: The issue appears during playback while charging and gets worse with cheaper USB chargers or noisy power sources.

Why worse-than-expected: Most mid-range portable amps allow playback while charging with minimal noise, so this restriction creates a real usage trade-off for people who want continuous listening.

Will the battery last as promised?

• Early sign: Several buyers report shorter runtime than the advertised 12 hours, especially after several charging cycles.
• Pattern statement: This is a commonly reported secondary issue rather than universal, but frequent enough to note.
• Usage anchor: Runtime complaints show up after repeated use and during long listening sessions.
• Category contrast: It is less forgiving than most mid-range alternatives that meet stated battery claims more consistently.

Can it adequately drive high-impedance headphones?

• Primary complaint: Users report insufficient headroom with demanding or high-impedance headphones near the upper spec limit.
• Pattern: This appears repeatedly as a primary pain for buyers with 100–300Ω headphones.
• When it shows: The weakness is apparent at high volumes or with dynamic tracks needing strong transient power.
• Cause signal: The problem often links to the amp hitting its gain ceiling even with the two-stage gain switch.
• Impact: Expect reduced dynamics and lower perceived volume compared with more powerful rivals.
• Fixability: Often requires a stronger desktop amp, so this is a less convenient workaround for portable use.

Are the controls and connections durable?

• Appearance: Many buyers describe the switches and jack as flimsy out of the box or after light handling.
• Pattern: Reports of loose jacks and scratchy switches appear repeatedly but are not universal.
• When it worsens: Problems become obvious after daily handling and frequent cable swaps.
• Cause: Compact portable designs often sacrifice mechanical robustness, and this unit seems more fragile than typical mid-range peers.
• Impact: Loose connections cause intermittent audio dropouts and annoyance during commuting or pocket carry.
• Attempts to fix: Buyers report temporary fixes like tighter plugs or tape, showing the issue is repairable but inconvenient.
• Hidden requirement: Expect gentler handling and better cables to avoid repeated connector wear.

Illustrative excerpts

Excerpt: "Buzzes loudly when plugged into the phone charger while playing music." — primary

Excerpt: "Battery dropped after a month; now lasts half a day on medium volume." — secondary

Excerpt: "Works fine with earbuds but not with my over-ear 250Ω cans." — primary

Who should avoid this

• Commuters who charge while listening — the charging noise is a major use killer and is more disruptive than expected.
• Owners of high-impedance headphones — those needing strong headroom will find the amp less capable than category peers.
• People wanting rugged pocket gear — recurring reports of loose jacks and scratchy switches mean more upkeep than typical portables.

Who this is actually good for

• Casual earbud users — if you use low-impedance earbuds, the amp's limits are less noticeable and charging rules are manageable.
• Occasional portable listeners — short trips and light handling reduce the chance of durability problems.
• Budget-first buyers — if you accept trade-offs on charging convenience and ruggedness, it delivers compact amplification at a low price.

Expectation vs reality

• Expectation: Reasonable for this category to charge and listen simultaneously without interference.
• Reality: This unit often audibly interferes when charging, which makes continuous use impractical for many buyers.
• Expectation: A portable amp should power 16–300Ω reliably for on-the-go use.
• Reality: Many buyers report limited headroom near the high end, forcing upgrades for demanding headphones.

Safer alternatives

• Choose amps that list usable-while-charging — pick models with explicit testing or user reports confirming quiet charging behavior to avoid the main regret trigger.
• Prefer higher output power — look for units that advertise stronger RMS output to neutralize the headroom problem with high-impedance headphones.
• Check mechanical reviews — prioritize models noted for solid jacks and sturdy switches to avoid connector wobble and durability headaches.
• Buy from sellers with solid battery support — prefer options that offer longer warranties or easy battery service to reduce long-term runtime risk.

The bottom line

Main regret: The charging-related audible noise is the primary complaint and often prevents simultaneous charging and listening.

Why it matters: This is worse than typical mid-range portable amps because it removes a common convenience and adds real-world friction.

Verdict: Avoid this unit if you charge while listening, use high-impedance headphones, or need rugged pocket reliability.