Best Bass Iem Under $100 (2026): 5 Picks Compared

Updated Oct 24, 2026 · By Jonah Mercer · Ranked from listed specifications · How we rank

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For the best bass iem under 100, the BASN Bmaster leads with 2DD and 1BA triple drivers, 10mm diaphragms and two MMCX cables for stage monitoring. If you want tuning switches with 16 sound profiles, the CCA Castor Pro is the Runner-Up, and the ZS10 Pro, Tipsy M1 and ZS12 Pro 2 cover 5-driver, single-driver and 6-driver designs.

The picks at a glance

#	Pick	Product
1	Best Overall	BASN Bmaster in Ear Monitor Headphone	Check on Amazon
2	Runner-Up	CCA KZ Castor Pro Tunable in Ear	Check on Amazon
3	Also Great	Kinboofi KZ ZS10 Pro in Ear Monitor	Check on Amazon
4	Also Great	Tipsy M1 IEM	Check on Amazon
5	Also Great	YINYOO KZ ZS12 PRO 2 in Ear Monitor	Check on Amazon

Which one should you buy?

Musicians who want triple drivers for stage monitoring: BASN Bmaster in Ear Monitor Headphone See pick 1More picks: Best in Ear Monitors for Stage
Players who want 16 sound profiles from tuning switches: CCA KZ Castor Pro Tunable in Ear See pick 2
Singers and guitarists who want a stage IEM: Kinboofi KZ ZS10 Pro in Ear Monitor See pick 3More picks: Best in Ear Monitors for Guitarists
Beginner audiophiles who want bass and vocals forward: Tipsy M1 IEM See pick 4More picks: Best in Ear Monitors for Audiophiles
Gamers who want a mic for calls and teammates: YINYOO KZ ZS12 PRO 2 in Ear Monitor See pick 5More picks: Best Iem with Mic

Want the full range? Best Iem ranks the top in-ear monitors for every buyer, or browse all 57 guides.

The 5 picks, ranked

1Best Overall

BASN Bmaster in Ear Monitor Headphone

Detachable cable
Driver size: 10 mm
Impedance: 18 ohm
Driver setup: 2Dd+1Ba
12 months warranty stated

9.8Spec score View on Amazon

It earns Best Overall with 2DD and 1BA triple drivers, 10mm diaphragms and two MMCX cables, plus isolation up to 37 dB.

Who it suits

Musicians who want triple drivers for stage monitoring
Drummers who want deep bass in an IEM

Skip it if

You want more than 2 cables in the box
You want an impedance above 18 ohm

The Bmaster runs 2 dynamic drivers and 1 balanced armature driver with 10mm diaphragms and 18 ohm impedance. Two detachable MMCX cables come in the box, one with a mic cable for calls and volume control, and memory foam ear tips seal the fit.

2Runner-Up

CCA KZ Castor Pro Tunable in Ear

Detachable cable
Driver size: 10 mm
In-line mic
Impedance: 16 ohm
Driver setup: Dynamic Driver

9.7Spec score View on Amazon

It earns Runner-Up with dual 10mm dynamic drivers, 4 tuning switches and 16 sound profiles for bass enthusiasts.

Who it suits

Players who want 16 sound profiles from tuning switches
Gamers who want a mic on a detachable cable

Skip it if

You want more than 16 sound profiles
You want a 6-driver hybrid design

The Castor Pro runs a 10mm mid-high frequency dynamic driver and a 10mm low-frequency dynamic driver with an electronic crossover. Four tuning switches give 16 sound profiles for low and high frequencies, and the 2PIN-C cable detaches for other cables. It uses a 3.5mm jack, works with a mic, and runs at 16 ohm impedance.

3Also Great

Kinboofi KZ ZS10 Pro in Ear Monitor

Detachable cable
Driver size not stated in the listing
Impedance: 30 ohm
Driver setup: 4Ba

9.6Spec score View on Amazon

It earns Also Great with 4 balanced armature drivers and 1 10mm dynamic driver, plus isolation to 26dB.

Who it suits

Singers and guitarists who want a stage IEM
Players who want a stainless steel and resin shell

Skip it if

You want more than 5 drivers in one earbud
You want an impedance below 30 ohm

The ZS10 Pro runs 4 balanced armature drivers and 1 10mm double magnetic dynamic driver with a separate frequency crossover board. Its detachable 2-pin cable uses 0.75mm OFC wire with a gold plated 3.5mm jack, and the shell mixes 304 stainless steel with resin. It isolates noise to 26dB and runs at 30 ohm impedance.

4Also Great

Tipsy M1 IEM

Detachable cable
Driver size not stated in the listing
Impedance: 24 ohm
Driver setup: Dynamic Driver
6-month warranty stated

9.2Spec score View on Amazon

It earns Also Great with a bamboo fiber diaphragm, 36 dB of noise isolation and a 6-month warranty.

Who it suits

Beginner audiophiles who want bass and vocals forward
Players who want a resin shell IEM for practice

Skip it if

You want more than one driver per earbud
You want a 12-month warranty

The M1 runs a single dynamic driver with a bamboo fiber diaphragm and a detachable 0.78mm 2-pin cable. Its resin shell seals for isolation up to 36 dB, and it runs at 24 ohm impedance for music production gear, laptops and phones. It carries a 6-month warranty on the earbuds.

5Also Great

YINYOO KZ ZS12 PRO 2 in Ear Monitor

Detachable cable not stated in the listing
Driver size not stated in the listing
Impedance: 35 ohm
Driver setup: 5Ba+1Dd
12 months warranty stated

9.0Spec score View on Amazon

It earns Also Great with 5 balanced armature drivers and 1 10mm dynamic driver, plus a mic for calls and gaming.

Who it suits

Gamers who want a mic for calls and teammates
Players who want 6 hybrid drivers per earbud

Skip it if

You want more than 6 hybrid drivers
You want an impedance below 35 ohm

The ZS12 Pro 2 runs 5 balanced armature drivers and 1 10mm dynamic driver with an electronic crossover board. Its metal faceplate and resin shell hold an over-ear design, and the HD mic covers calls and gaming. It runs at 35 ohm impedance and carries a 12-month warranty.

Side by side

Product	Detachable cable	Driver size	In-line mic	Impedance	Driver setup	Weight	Warranty
BASN Bmaster in Ear Monitor Headphone	Yes	10 mm	Not stated	18 ohm	2Dd+1Ba	0.6 lb	12 months
CCA KZ Castor Pro Tunable in Ear	Yes	10 mm	Yes	16 ohm	Dynamic Driver	Not stated	Not stated
Kinboofi KZ ZS10 Pro in Ear Monitor	Yes	Not stated	Not stated	30 ohm	4Ba	Not stated	Not stated
Tipsy M1 IEM	Yes	Not stated	Not stated	24 ohm	Dynamic Driver	Not stated	6-month
YINYOO KZ ZS12 PRO 2 in Ear Monitor	Not stated	Not stated	Not stated	35 ohm	5Ba+1Dd	Not stated	12 months

How we ranked these in-ear monitors

Every pick has at least 100 customer ratings on Amazon and a listing with real specifications. The order mixes two things: how each model compares on the specs below (higher share of the best value in this group scores more), and how widely it is bought. The spec score runs from 9.0 to 9.8 and only compares these picks with each other. A spec the listing does not state is left out and the other specs are re-weighted; a listing with fewer than 2 stated specs is scored at half. We do not test gear in person. Full method.

Detachable cable weight 2
Driver size weight 1

Buying advice: bass iem under 100

Count drivers before you count bass

Driver count shapes the design, not the bass alone. The BASN runs 2 dynamic drivers and 1 balanced armature driver, the Castor Pro runs dual dynamic drivers, and the ZS10 Pro runs 4 balanced armature drivers and 1 dynamic driver. The Tipsy M1 runs a single dynamic driver, and the ZS12 Pro 2 runs 5 balanced armature drivers and 1 dynamic driver. Match the driver setup to the sound you want: hybrid designs split the work across drivers, while a single driver keeps the design simple.

Check isolation and impedance together

Impedance differs too: the BASN runs 18 ohm, the Castor Pro runs 16 ohm, the ZS10 Pro runs 30 ohm, the Tipsy M1 runs 24 ohm, and the ZS12 Pro 2 runs 35 ohm. Match the isolation figure to how noisy your surroundings are and the impedance to your source gear.

Match cables and mics to your use

Cables decide what you can swap and what you can plug into. The BASN uses two MMCX cables, the Castor Pro uses a 2PIN-C cable, the ZS10 Pro uses a 2-pin cable, and the Tipsy M1 uses a 0.78mm 2-pin cable. Mics differ too: the BASN and Castor Pro include a mic, the ZS12 Pro 2 has an HD mic, and the ZS10 Pro and Tipsy M1 versions here are the no-mic versions.

Frequently asked questions

How many drivers do these IEMs have?

The BASN has 2 dynamic drivers and 1 balanced armature driver, the Castor Pro has dual dynamic drivers, the ZS10 Pro has 4 balanced armature drivers and 1 dynamic driver, the Tipsy M1 has a single dynamic driver, and the ZS12 Pro 2 has 5 balanced armature drivers and 1 dynamic driver.

What isolation figures do these IEMs state?

The BASN isolates up to 37 dB, the Tipsy M1 isolates up to 36 dB, and the ZS10 Pro isolates noise to 26dB.

Do these IEMs work for gaming?

The Castor Pro and ZS12 Pro 2 are gaming earbuds with mics, and the Tipsy M1 suits entry-level FPS gaming. The BASN and ZS10 Pro suit stage monitoring and singer use instead.