The HD 650 is an open-back, over-ear headphone with a 42 mm dynamic driver rated 10–41,000 Hz (−10 dB) at 300 ohms. It comes with a detachable 3 m 6.35 mm cable and a 3.5 mm adapter; balanced cables are optional extras.
Specifications checked 11 Sept 2026.
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THE DIFFERENCES, MADE VISIBLE
Visual facts
Differences first. Select a topic for its graphic, sources and conditions.
How to read this comparison
Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.
FEATURES SIDE BY SIDE6 topics
Yes and No describe the listed feature. Missing evidence stays unverified.
SELECTED TOPIC
01 / 06
Open-back design
Open-back earcups are not sealed. Start here if your listening space is quiet; this construction is not a sound-quality rating.
Start with your listening environment. Open and closed earcups suit different surroundings. A closed back is not the same as active noise cancellation. Check the exact cable and headphone output. We do not turn impedance, driver size or unpaired lab results into a sound-quality score.
The reviewed exact manufacturer sources establish open-back dynamic construction but do not explicitly state whether active noise cancellation is present or absent. Acoustic mesh, an absorber or an omitted ANC control does not establish ANC=false. · Manufacturer specification
The reviewed exact manufacturer sources do not explicitly establish microphone presence or absence for the supplied configuration. Stereo audio conductors and omitted controls are not proof that no microphone exists. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer battery life and conditions
LG BUDSPLUSup to 10 (Earbuds (ANC off & Adaptive EQ off)); up to 7.5 (Adaptive EQ off) (Earbuds (ANC on)); up to 30 (Total (Earbuds+Charging Case))
Sennheiser HD 650Not verified
Sources
LG BUDSPLUS
Manufacturer specification · Earbud-only and earbuds-plus-case claims, ANC state and up-to qualifiers remain separate. No combined runtime is represented as a single-charge earbud runtime. Manufacturer section: BATTERY LIFE (HRS). Source field: Earbuds (ANC off & Adaptive EQ off). Manufacturer section: BATTERY LIFE (HRS). Source field: Earbuds (ANC on). Manufacturer section: BATTERY LIFE (HRS). Source field: Total (Earbuds+Charging Case).
The reviewed exact manufacturer sources do not explicitly give battery life or state that no battery is required for operation. A wired analogue connection is known; the generic disposal wording “battery/rechargeable battery (if applicable)” establishes neither presence nor absence. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Driver construction
LG BUDSPLUSNot verified
Sennheiser HD 65042 mm dynamic transducer with 38 mm diaphragm and aluminium voice coil; acoustic mesh and hand-paired transducers within stated ±1 dB tolerance
Sources
LG BUDSPLUS
No source recorded for this side.
Sennheiser HD 650
Manufacturer specification · The driver, diaphragm and voice-coil sizes describe different parts.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Bluetooth version
LG BUDSPLUS5.4
Sennheiser HD 650Not verified
Sources
LG BUDSPLUS
Manufacturer specification · Literal manufacturer declarations; Yes, No, counts, versions and component/operating qualifiers are preserved. A missing row establishes no capability or absence. Manufacturer section: CONNECTIVITY. Source field: Bluetooth Version.
Manufacturer claims do not establish independently measured performance, current retailer stock or price. Unlisted specifications remain explicitly unknown.
Its 42 mm dynamic driver has hand-paired transducers matched within ±1 dB, and the supplied 6.35 mm cable with 3.5 mm adapter fits both common socket sizes. The cable and velour ear pads are replaceable.
At 300 ohms, check that your amplifier or audio source can drive the headphones properly. The documented connection uses the supplied analogue audio cable and 3.5 mm adapter.
Sennheiser describes the intended use as listening at home with high-quality audio systems. The 4.4 mm balanced and XLR-4 cables are optional accessories.
SBC (yes); AAC (yes); BLE (yes); Google Fast Pair Service (yes); 5.4 (Bluetooth Version); Auracast (yes); Microsoft Swift Pair (yes)
Wired analogue; detachable 6.35 mm unbalanced cable and included 3.5 mm adapter
Manufacturer battery life and conditionsSources
LG BUDSPLUS
Manufacturer specification · Earbud-only and earbuds-plus-case claims, ANC state and up-to qualifiers remain separate. No combined runtime is represented as a single-charge earbud runtime. Manufacturer section: BATTERY LIFE (HRS). Source field: Earbuds (ANC off & Adaptive EQ off). Manufacturer section: BATTERY LIFE (HRS). Source field: Earbuds (ANC on). Manufacturer section: BATTERY LIFE (HRS). Source field: Total (Earbuds+Charging Case).
The reviewed exact manufacturer sources do not explicitly give battery life or state that no battery is required for operation. A wired analogue connection is known; the generic disposal wording “battery/rechargeable battery (if applicable)” establishes neither presence nor absence. · Manufacturer specification
Manufacturer specification · Literal manufacturer declarations; Yes, No, counts, versions and component/operating qualifiers are preserved. A missing row establishes no capability or absence. Manufacturer section: CONNECTIVITY. Source field: Bluetooth Version.
The reviewed exact manufacturer sources do not explicitly establish microphone presence or absence for the supplied configuration. Stereo audio conductors and omitted controls are not proof that no microphone exists. · Manufacturer specification
The reviewed exact manufacturer sources establish open-back dynamic construction but do not explicitly state whether active noise cancellation is present or absent. Acoustic mesh, an absorber or an omitted ANC control does not establish ANC=false. · Manufacturer specification
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.