iBasso IT01S vs FiiO FH3

Short answer: the iBasso IT01S. It ranks #362 of 450 in-ear headphones by sound quality, rated 3.4/5, at $89.95; the FiiO FH3 ranks #367, rated 3.3/5, and costs $119.99, so there is little reason to consider the other one.

What the iBasso IT01S does well: A Harman score of 66 in Crinacle’s measurement shows the tuning lands reasonably close to what most listeners prefer. The catch: Deviation from the target averages 2.84 dB, so the response is not especially smooth.

Why pick the FiiO FH3: Bass and sub-bass sit within about 1 dB above the Harman target, giving kick drums and bass guitar a full, warm foundation without bloat. Watch for: The 3 to 6 kHz presence region sits about 5.7 dB below target, with a dip of 7.4 dB near 6.5 kHz, so vocals and cymbals lose bite and detail.

Buy the iBasso IT01S. It is rated higher for sound quality than the FiiO FH3 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.

Still deciding? The full Headphones rankings cover every ranked option.

Specifications Side By Side

Related Headphone Comparisons

How iBasso IT01S compares with other leading options:

• KZ PR1 vs iBasso IT01S
• Sennheiser IE 40 Pro vs iBasso IT01S
• iBasso IT01S vs Sennheiser Momentum True Wireless 3
• iBasso IT01S vs BGVP DN3
• iBasso IT01S vs Shure SE215

Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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The Two Headphones In Full

iBasso IT01S: $89.95 Amazon eBay

Pros: A Harman score of 66 in Crinacle’s measurement shows the tuning lands reasonably close to what most listeners prefer. The 16 ohm impedance and 109 dB/mW sensitivity mean a phone can drive it to loud levels. At 8 g per earbud with a 10mm dynamic driver, it is a light, simple wired set.

Cons: Deviation from the target averages 2.84 dB, so the response is not especially smooth. Without an inline microphone it cannot be used for calls, and the KZ PR1 has a higher rating.

Full iBasso IT01S review and specifications →

Back	Closed
Built-in Microphone	No
Connection	Wired
Deviation From Target	2.84 dB standard deviation
Driver Type	Dynamic
Drivers	1 x 10mm dynamic
Form Factor	In-ear
Frequency Response	10Hz - 43kHz (Manufacturer specified)
Harman Preference Score	66 (measured by crinacle, via AutoEQ)
Impedance	16 ohms
Sensitivity	109 dB/mW
Tonal Tilt	-0.22 (negative is warmer, positive brighter)
Weight	0 lbs (8 g) per earbud

EQ preset to match the Harman target

Set a preamp of -3.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+3.1 dB	0.70
Peak	169 Hz	-4.1 dB	0.49
Peak	918 Hz	+3.6 dB	1.10
Peak	9,169 Hz	+3.5 dB	2.61
Peak	3,523 Hz	+2.8 dB	4.61
High shelf	10,000 Hz	+0.4 dB	0.70
Peak	5,075 Hz	-6.1 dB	5.81
Peak	6,349 Hz	+3.1 dB	5.89
Peak	4,021 Hz	+2.0 dB	5.78
Peak	2,467 Hz	-0.5 dB	5.37

• Reviews, Comparisons and Sound Samples
  • AutoEQ results for the iBasso IT01S (crinacle measurement)
• Head-to-Head Comparisons
  • iBasso IT01S vs Sennheiser Momentum True Wireless 3
  • iBasso IT01S vs Sennheiser IE 40 Pro
  • iBasso IT01S vs KZ PR1
  • iBasso IT01S vs BGVP DN3
  • iBasso IT01S vs Shure SE215

FiiO FH3: $119.99 Amazon AliExpress eBay

Pros: Bass and sub-bass sit within about 1 dB above the Harman target, giving kick drums and bass guitar a full, warm foundation without bloat. The hybrid design pairs a 10mm dynamic driver with two balanced armatures, and 114 dB/mW sensitivity at 24 ohms means a phone runs it easily. A preference score of 65 suits listeners who like a warm, bassy tilt.

Cons: The 3 to 6 kHz presence region sits about 5.7 dB below target, with a dip of 7.4 dB near 6.5 kHz, so vocals and cymbals lose bite and detail. Treble from 6 to 10 kHz is also about 2.2 dB low, which makes the sound dark and a little veiled. The KZ PR1 has a higher rating.

Full FiiO FH3 review and specifications →

Back	Closed
Connection	Wired
Deviation From Target	2.59 dB standard deviation
Driver Type	Hybrid (1 dynamic + 2 balanced armature)
Drivers	1 x 10mm dynamic + 2 x balanced armature
Form Factor	In-ear
Frequency Response	10Hz - 40kHz (Manufacturer specified)
Harman Preference Score	65 (measured by HypetheSonics, via AutoEQ)
Impedance	24 ohms
Sensitivity	114 dB/mW
Sub-bass Extension	Within 6 dB of target down to 20 Hz (+1.1 dB at 30 Hz)
Tonal Tilt	-0.86 (negative is warmer, positive brighter)
Weight	0 lbs (7.3 g) per earbud

EQ preset to match the Harman target

Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-4.0 dB	0.70
Peak	4,061 Hz	+4.3 dB	1.02
Peak	178 Hz	-2.5 dB	1.19
Peak	1,183 Hz	-3.9 dB	2.64
Peak	60 Hz	+2.7 dB	0.83
High shelf	10,000 Hz	-0.6 dB	0.70
Peak	545 Hz	+1.1 dB	2.57
Peak	2,365 Hz	-2.4 dB	4.99
Peak	6,488 Hz	+2.3 dB	6.00
Peak	2,972 Hz	+1.8 dB	5.25

• Reviews, Comparisons and Sound Samples
  • AutoEQ results for the FiiO FH3 (HypetheSonics measurement)
• Head-to-Head Comparisons
  • FiiO FH3 vs Sennheiser Momentum True Wireless 3
  • FiiO FH3 vs Sennheiser IE 40 Pro
  • FiiO FH3 vs Shure SE215
  • FiiO FH3 vs Jabra Elite Active 65t