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  3. Openpiece S TE-S1 vs TAT3509

AVIOT Openpiece S TE-S1 vs Philips TAT3509

What Openpiece S TE-S1 does better (2) and where TAT3509 wins (0) — every spec side by side.

AVIOT Openpiece S TE-S1
AVIOT · 2022Openpiece S TE-S1
5.7Score
2 advantages≈ $35
vs
Philips TAT3509
Philips · 2024TAT3509
5.9Score
0 advantages≈ $35
Higher score
5.5Battery4.7
5.9Build & features5.2

Why is Openpiece S TE-S1 better than TAT3509?

  1. Total with charging case27 h vs 24 h+12%
  2. Charging time1.5 h vs 2 h+33%

Why is TAT3509 better than Openpiece S TE-S1?

TAT3509 has no measurable advantages in this pair.

Specifications

Side by side

Philips TAT3509Philips TAT3509≈ $355.9
Sound
FitOpen-earIn-ear
Ear cup designOpen-backClosed-back
Driver typeDynamicDynamic
Driver size10 mm10 mm
Lowest frequency—20 Hz
Highest frequency—20,000 Hz
Impedance—16 Ω
Sensitivity—104 dB
Hi-Res Audio—Yes
Adjustable equaliserYesYes
Noise control
Active noise cancelling—Yes
Transparency / ambient mode—Yes
Battery & charging
Battery life8 h8 h
Battery life with ANC—6 h
Total with charging case27 h24 h
Charging time1.5 h2 h
Connectivity
WirelessYesYes
Bluetooth version5.25.3
Bluetooth codecsAAC, SBCLC3, SBC
Hi-res codec (LDAC / aptX HD / LHDC)NoNo
aptXNoNo
LDACNoNo
Multipoint (two devices)YesYes
LE Audio—Yes
USB-CYesYes
Design & build
Weight—45 g
Earbud weight (each)4.2 g—
Protection ratingIPX4IPX4
Water resistance (IPx)IPx4IPx4
Features
Touch controls—Yes
Hands-free callsYesYes
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