Philips SHB4305 BASS+ Bluetooth Earphones – Black

BASS+ · 12.2mm · 9Hz Driver

How Philips Achieves the Bass

The BASS+ designation on the SHB4305 refers to Philips’s specific acoustic engineering approach to bass in this earphone — distinct from simply boosting low frequencies with equalisation, which creates muddiness and reduces definition in the bass range. The 12.2mm neodymium driver uses a PET (polyethylene terephthalate) diaphragm rather than the softer PEEK or mylar diaphragms common in budget earphones. PET has a combination of rigidity and light weight that allows the diaphragm to move quickly at high frequencies while maintaining the excursion (cone travel) needed for bass extension, reducing the compromise between bass and treble that affects single-driver earphones with very soft or very stiff diaphragms. The bass vents in the housing are acoustic ports positioned to create a tuned resonance that reinforces bass frequencies at the driver’s output. The vent tuning sets a specific bass frequency at which the earphone’s acoustic cavity resonates, boosting output at that frequency without requiring additional electrical power to the driver. Combined with the closed-type acoustic system — which seals ambient sound out and keeps low-frequency energy inside — the SHB4305’s bass output is substantially greater than an unvented earphone using a driver of the same size. The 107dB sensitivity means the driver is highly efficient at converting electrical signal to acoustic pressure, which at 32Ω impedance means any Bluetooth device’s amplifier output drives the earphone to high listening volumes.

BT 4.1 · 6hr · 110hr Standby

Wireless for Daily Use

Bluetooth 4.1 provides reliable wireless audio streaming within the standard 10-metre range for personal listening use. The SHB4305 supports A2DP (Advanced Audio Distribution Profile) for stereo music streaming, AVRCP (Audio Video Remote Control Profile) for media playback control from the earphone remote, HFP (Hands-Free Profile) and HSP (Headset Profile) for phone calls. These four profiles are the standard requirements for a full-featured Bluetooth earphone — A2DP and AVRCP for music, HFP and HSP for call audio. The 6-hour music playback battery covers most daily listening schedules for commuting, exercise and work. The 110-hour standby time is the most impressive battery specification — a standby time of over four days means the SHB4305 can be left powered on between sessions without the battery draining before the next use. Users who frequently forget to turn off Bluetooth accessories when not in use will find the 110-hour standby practically eliminates dead battery surprises. The Li-Polymer battery charges via USB — the included USB cable connects to any USB-A port (computer, wall adapter, power bank). Charge time is approximately 2 hours for a full charge.

Wing Tips · Oval Tube · 15g

Fit, Comfort and Call Management

The SHB4305’s oval and angled tube design aligns the driver axis with the natural angle of the ear canal, reducing the leverage the earphone exerts against the canal wall and improving the seal without canal pressure. The wing tips — small flexible rubber extensions that brace against the outer ear’s concha — provide secondary retention for the earphone, holding it in position during movement and preventing it from working loose during active use. At 15g total, the SHB4305 is exceptionally light for a wireless earphone; the battery and Bluetooth circuit are distributed along the connecting cable between the earpieces rather than concentrated in the earpiece housing, which keeps the earpiece weight low. The inline remote provides the most complete call management in this earphone category: volume up/down, play/pause, call answer, call end, microphone mute (mutes the outgoing mic without ending the call), call reject, last number redial, and the ability to switch between an active call and incoming music. The flat tangle-free cable construction means the connecting cable between the earpieces can be coiled and stored without forming knots or kink memory. The cable also has a built-in clip for attaching to clothing during exercise.

Right choice if you…

✔ Listen primarily to bass-heavy music — EDM, hip-hop, R&B, grime — and want tuned bass rather than boosted bass
✔ Want wireless earphones that are genuinely light — 15g is at the low end of the wireless earphone weight range
✔ Make frequent calls and want full inline call management including mic mute and call reject
✔ Need long standby — 110 hours means leaving them switched on between sessions without battery anxiety

Consider something else if…

✖ You want a balanced or analytical sound signature — BASS+ is tuned for bass emphasis; the sound character is designed for bass-heavy genres, not neutral monitoring
✖ You want active noise cancellation — the SHB4305 provides passive isolation only from the closed in-ear seal; no ANC processing
✖ You want true wireless with no cable between earpieces — see OnePlus Buds 4 or Samsung Galaxy Buds for TWS options

Technical Specifications

In the Box

Frequently Asked Questions

How do the bass vents work — is it just a marketing term?

No — bass vents are a functional acoustic engineering feature, not marketing. The vent openings in the earphone housing create a tuned acoustic port that reinforces bass frequencies at a specific frequency range, the same principle as a bass reflex speaker cabinet port. The vent tuning is set by the size and position of the opening — it resonates the air column in the housing to add output at low frequencies. Combined with the closed-type seal of the in-ear design, this gives the SHB4305 a genuine bass extension below what the driver size alone would produce.

Can I mute my mic during a call without ending it?

Yes — the SHB4305’s inline remote includes a dedicated microphone mute function. During an active call, pressing the mute button silences the outgoing microphone while keeping the call connected and allowing you to hear the other party. Press again to unmute. This is more useful than call end for situations where you need a moment of background noise suppression during a conference call without disconnecting.

Is the SHB4305 suitable for gym and sport use?

The wing tips and oval tube fit hold the earphones securely during gym use and moderate exercise. The SHB4305 does not carry an IP water resistance rating — it is not specified for sweat resistance. Light gym use with the earphones staying in place is within normal use; heavy sweating or outdoor running in rain is not covered by the product specification. For a rated sweat-resistant wireless earphone, see the Sony WI-SP500 (IPX4 rated).

What is the difference between BASS+ tuning and a standard EQ bass boost?

A standard EQ bass boost applies electrical gain to low frequencies — it increases the power delivered to the driver at those frequencies, which can cause driver distortion at high volumes and increases battery consumption. Philips BASS+ uses acoustic engineering — the bass vents and closed housing are physically tuned to reinforce bass frequencies through the resonance of the housing cavity, without requiring additional electrical power to the driver. The result is bass extension without the distortion that an equivalent EQ boost at high volumes would produce in a standard earphone.

Condition

Brand New — Retail Packaging

Warranty

Manufacturer warranty (Philips)

Delivery

4–5 Working Days · Fully Tracked

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