KZ PR3 vs KZ PRX: Planar IEMs Compared

Reviewed 6 Oct 2026 · Data from KZ’s official spec sheetsFor: Listening to music Recording and mixing at home

KZ has two planar-driver earphones in its catalog: the KZ PR3 and the KZ PRX. They use the same technology, but the PRX is a later generation. This comparison explains what a planar is, what changes between the two and which suits you.

In short

PR3: 13.2 mm planar, more sensitive and cheaper.
PRX: fourth-generation planar driver, with changes to reduce sibilance and widen the soundstage, according to KZ.
Both are 15 Ω but have low sensitivity: they benefit from a source with some power.

What a planar driver is

In a planar driver, the diaphragm is a very thin sheet with the conductor spread across its whole surface, placed between magnets. Because it all moves at once, it distorts less than a dynamic diaphragm and resolves detail better. In exchange, it is usually less sensitive.

Comparison table

	KZ PR3	KZ PRX
Driver	13.2 mm planar	4th-generation planar
Diaphragm	Silver-plated	Silver-plated, about 5 microns
Magnets	Symmetrical 7 + 7 circuit	At least 14 N52 magnets
Frequency response	20–40000 Hz	20–40000 Hz
Sensitivity	98 ± 3 dB	94 ± 3 dB
Impedance	15 ± 3 Ω	15 Ω
Shell	Metal alloy	Metal alloy
Cable	Silver-plated OFC, 120 ± 5 cm	Silver-plated, 120 ± 5 cm
Connector	2-pin (Pin C)	2-pin (Pin C)

Data from the official KZ product pages (kz-audio.com).

What the PRX improves

According to KZ, the PRX brings three changes over the PR3: revised damping to reduce sibilance, an acoustic curve designed to widen the soundstage and a reinforced magnetic circuit to give the sound more body. There are no official measurements comparing the two, so these are the improvements stated by the manufacturer.

Do they need an amplifier?

At 15 Ω they work with a phone, but their sensitivity is low for an IEM (98 dB for the PR3 and 94 dB for the PRX). In practice you will have to turn the volume up more than with a dynamic, and a USB-C dongle or a small amp helps get the most out of them. The PRX is the more demanding of the two.

Prices

Hi-Fi & pro audio IEMs, Everyday earphones, Planar driver, KZ
KZ PR3 – In-Ear Monitors with 13.2 mm Planar Driver
78,95 €
Select options This product has multiple variants. The options may be chosen on the product page
Hi-Fi & pro audio IEMs, Gaming & movie earphones, Planar driver, KZ
KZ PRX – Planar Driver In-Ear Monitors
87,95 €
Select options This product has multiple variants. The options may be chosen on the product page

Which to choose

KZ PR3

You want to try a planar for less.
You will mostly use it with a phone.
You prefer the more sensitive of the two.

See KZ PR3

KZ PRX

You want the latest generation.
Sibilant treble bothers you.
You have a source with some power.

See KZ PRX

Frequently asked questions

Does a planar have less bass?

Not necessarily. Planar bass is usually fast and controlled, with less of a thump than a dynamic.

Do they work with Bluetooth adapters?

Yes, they use Pin C. Bear in mind that because of their low sensitivity they will play quieter than other models on the same adapter.

Does KZ have more planars?

In our store, these two. You will find them in the planar IEMs.

Keep reading

Every KZ Componentes order comes with a 3-year warranty, 30-day returns and support from our team in Spain. Torn between models? Write to us and we will help you choose.