JLab Fit Sport 3 Wired vs TRN CS2: which should you buy?

On aggregated review scores the JLab Fit Sport 3 Wired comes out ahead with a HearWiki score of 71. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: JLab Fit Sport 3 Wired - Good overall at around $10.

Wired IEMs

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

JLab Fit Sport 3 Wired leads on 5 of 6 measures.

JLab Fit Sport 3 Wired
TRN CS2

HearWiki score

Sound

6.5

4.2

Battery

6.0

Calls

5.5

Value

8.0

Price (USD)

$10

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

These are the same generation of hardware - nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price.

Fit Sport 3 WiredYear unknown
CS22020

Specifications

Fit Sport 3 WiredCS2

Type: Wired IEMs; Wired IEMs
Price (USD): $10; $5
HearWiki score: 71; 36
Released: -; 2020
Availability: Still sold new; Discontinued
Driver: 10 mm dynamic; 2× 10 mm dynamic
Driver type: dynamic; dynamic
Driver size: 10 mm; 10 mm
Drivers per side: 1; 2
Frequency response: 20 Hz - 20 kHz; 20 Hz - 20 kHz
Impedance: 32 Ω; 22 Ω
Sensitivity: 110 dB/mW; 118 dB/mW
Bluetooth: 5.0; -
Codecs: SBC; -
Multipoint pairing: No; -
Battery life: 10 h; -
Wireless charging: No; -
Active noise cancelling: No; No
Controls: -; buttons
Weight: 15.5 g; 21 g
Water resistance: IP55; -
Detachable cable: -; Yes
USB-C: No; -
Connector: -; 2-pin 0.78 mm
Microphones: 1; -

Specification comparison of JLab Fit Sport 3 Wired vs TRN CS2
Spec	JLab Fit Sport 3 Wired	TRN CS2
Type	Wired IEMs	Wired IEMs
Price (USD)	$10	$5
HearWiki score	71 / 100 Good	36 / 100 Weak
Released	-	2020
Audio
Driver	10 mm dynamic	2× 10 mm dynamic
Driver type	dynamic	dynamic
Driver size	10 mm	10 mm
Drivers per side	1	2
Frequency response	20 Hz - 20 kHz	20 Hz - 20 kHz
Impedance	32 Ω	22 Ω
Sensitivity	110 dB/mW	118 dB/mW
Wireless
Bluetooth	5.0	-
Codecs	SBC	-
Multipoint pairing	No	-
Battery
Battery life	10 h	-
Wireless charging	No	-
Features
Active noise cancelling	No	No
Controls	-	buttons
Design
Weight	15.5 g	21 g
Water resistance	IP55	-
Detachable cable	-	Yes
USB-C	No	-
Connector	-	2-pin 0.78 mm
Calls
Microphones	1	-

What reviewers said

JLab Fit Sport 3 Wired

The JLab Fit Sport 3 Wired earphones offer a budget-friendly option for workouts, with a focus on punchy bass and clear mids and highs. They are built for active use with an IP55 rating and a secure fit, though they lack advanced features like noise cancellation or high-quality codecs. Overall, they provide solid performance for the price, making them a practical choice for gym-goers.

Pro:Powerful bass response
Pro:Clear mids and highs
Pro:IP55 water and dust resistance

Con:No active noise cancellation
Con:Only supports SBC codec
Con:Wired design limits mobility

TRN CS2

The TRN CS2 is an ultra-affordable wired IEM that delivers a lively, easy-going sound with solid tonal balance for its price. Its dual 10 mm dynamic drivers and lightweight build make it a practical entry-level choice for budget-conscious listeners.

Pro:Very low price
Pro:Balanced, lively sound
Pro:Sturdy build for the cost

Con:No noise cancellation
Con:Basic button controls
Con:Limited frequency extension at the top end

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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New comparison JLab Fit Sport 3 Wired TRN CS2