Sennheiser IE 100 PRO vs Sennheiser IE 300

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IE 100 PRO compared with IE 300

	SennheiserIE 100 PRO	SennheiserIE 300
Overview
Released
Released	March 2021	January 2021
Sound
Type
Type	In-ear	In-ear
Noise cancelling
Noise cancelling	No	No
Driver size
Driver size	10 mm	7 mm
Impedance
Impedance	20 ohms	16 ohms
Bluetooth codecs
Bluetooth codecs	None (wired)	None (wired)
Drivers
Drivers	10 mm dynamic broadband transducer, single driver; 20 Hz – 18 kHz; 115 dB SPL (1 kHz, 1 Vrms); THD < 0.1% (1 kHz, 94 dB)	7 mm TrueResponse extra wide band (XWB) dynamic driver made in Germany, with a new membrane foil and a resonator chamber, diffuse-field equalised; 6 – 20,000 Hz; 124 dB SPL (1 kHz, 1 Vrms); THD < 0.08% (1 kHz, 94 dB)
Battery
Listening time (maker's claim)
Listening time (maker's claim)	No battery (wired)	No battery (wired)
Design
Weight (each earbud)
Weight (each earbud)	–	4 g
Headphone cable
Headphone cable	Yes	Yes
Fit and ear tips
Fit and ear tips	In-ear, closed; noise attenuation up to 26 dB; low-profile housing with reinforced ear hook; silicone and memory-foam ear adapters. Sennheiser doesn't give an earpiece weight; it gives only 160 g for the IE 100 PRO Wireless kit and 13 g for the Bluetooth neckband cable (14 g in the launch press release)	In-ear, closed; –26 dB attenuation; adjustable flexible ear hooks, TPU-encased; silicone and memory-foam tips (S, M, L)
Works with
Works with	Detachable black cable, about 1.3 m, with 3.5 mm plug, stage-proof internal cable duct and break-proof connector; compatible with IE PRO cables, the IE PRO Mono Cable and the IE PRO BT Connector (Bluetooth 5.0; SBC, AAC, aptX, aptX Low Latency), sold separately or in the IE 100 PRO Wireless set	Detachable 1.25 m OFC cable, para-aramid reinforced, with gold-plated Fidelity+ MMCX connectors in recessed 4.8 mm sockets and a 3.5 mm plug; balanced 2.5 mm and 4.4 mm cables sold separately
Colours
Colours	Black, Clear, Red	–
In the box
In the box	IE 100 PRO in-ear headphones, black cable, soft pouch, cleaning tool, foam and silicone ear adapters, quick guide, safety guide, compliance sheet	IE 300 earphones, cable with MMCX connectors and 3.5 mm plug, silicone and memory-foam tips (S, M, L), carry case, cleaning tool, user manuals