Image courtesy Bloom Audio
fosi
Fosi Audio IM4
Buy within India
No Indian store stocks this right now.
Overseas - ships to India
Official brand and global stores. Converted prices are indicative; customs duties and shipping may apply on delivery.
Price history
Each row is recorded from a real store listing, not a claimed MRP. Ceiling and floor from the observations on file.
Stores' Price History
Lowest price : ₹9,509 on 16 Oct 2026
Highest price : ₹9,695 on 12 Oct 2026
Average price : ₹9,616
Information about Stores
Bloom Audio: 30-day returns from delivery (14 days for battery products); buyer pays return shipping; no restocking fee for store credit or exchange. Ships from the US - customs may apply. source
Send Alerts for price / stock
One tap. The browser asks for permission once, and this product's alerts arrive as notifications on this device - even when the site is closed. No account, no email.
Stock alerts watch out-of-stock stores only - right now every listing has stock, so there is nothing to wait for.
Leave everything unticked to watch them all.
Price alert fires when the best price falls below your target; stock alert when a watched store restocks. Notifications arrive on this device; they stop from the browser's notification settings or the same button.
Changed your mind later? Turning these off - for this one product, or every notification on this device - is spelled out step by step on the Help page.
Three ways to be told - pick one, choose the stores, done. The email lands the moment it happens, on your account's address.
Stock alerts watch out-of-stock stores only - right now every listing has stock, so there is nothing to wait for.
Leave everything unticked to watch them all.
Price alert = one email when the price falls under your target. Stock alert = one email when a sold-out store restocks. Price + stock = both at once. Pick the stores in the dropdown, or leave everything unticked to watch them all.
Want an email when this product drops in price or comes back in stock? Alerts are part of a free account: one email the moment it happens, sent to the account's address.
Price alerts, stock alerts, or both - pick per product once you have an account. Alerts are part of a free account.
Buy links continue to the store - the order, delivery and warranty are between you and that store.
Features
Listen to what this product sounds like Estimated: Warm
Estimated tuning - how it was calculated: From an in-ear monitor, a dd driver configuration - the curve is that family's typical response, not a lab measurement of this exact unit.
Estimated bands vs the mids anchor (300–1000 Hz mean): bass +3.8 dB · treble +0.7 dB - the size of the deviation from flat this preview plays.
Same signal, two ways: Without this is baseline flatness (no EQ at all - the reference line at 0 dB), With this plays this product's estimated tuning curve through the EQ - flip live and hear what the tuning family adds to, and takes from, a flat source.
Wearing your own earphones or headphones? Pick them here and the player pre-corrects for their sound, so the demo plays the target tuning itself - not both mixed together.
Take the tuning with you - the same estimated curve ships as an EQ preset: Equalizer APO (.txt) GraphicEQ Qudelix-5K / Wavelet (CSV) Preset page
Tuning tools
EQ presets - Equalizer APO, Qudelix-5K, Wavelet
Generated from this product's labeled estimate curve - its tuning family, not a lab measurement - toward an approximate Harman in-ear (IE 2019) target. When a measurement lands, the preset regenerates from it automatically. An estimate - a starting point for people who already EQ, not a verdict. The same ten filters load into each tool: Equalizer APO runs them system-wide on Windows, the Qudelix-5K / 71 app takes the CSV as a paste-in import, Wavelet (Android) imports the same CSV into its parametric EQ.
Compatibility checker
Facts on file: connector 2-pin.
How to read the specs off a listing (photos usually settle it)
- Connector: 2-pin is two flat pins leaving the shell; MMCX is a round, coaxial click-in stud.
- Plug size: the jack on the cable's source end - 3.5mm plain, 4.4mm/2.5mm balanced, or a fixed USB-C/Lightning wire.
- Impedance and sensitivity: usually in the listing's spec table. Sensitivity may be quoted per mW or per V - the unit picker above flips the math.
Cables that fit this IEM
0.78mm 2-pin earphones seat these in-stock cables - most stores first, prices live across stores.
MOONDROP CHU II Cable - 3.5mm Without Mic
from ₹910 2 stores
MOONDROP MC1 With Microphone Cable for IEMs
from ₹1,289 2 stores
JCALLY PJ2+ | Copper Silver IEM Upgrade Cable
from ₹571 1 store
AUDIOCULAR - C03 8 Core Upgrade Cable for IEM - 3.5mm / 1.2m ...
from ₹690 1 store
Portable DACs & amps that drive this IEM
Dongles and portable DAC/amps pair with anything wired - no connector guessing. The shelf's most-rated in-stock units, prices live across stores.
AUDIOCULAR D07 CX31993 USB Portable DAC & Amp - Slim
from ₹889 1 store
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
from ₹1,050 2 stores
AUDIOCULAR D10 CX31993 Type C to 3.5mm Portable DAC Dongle - ...
from ₹819 1 store
Fosi Audio MD3 MagDac Portable DAC & Headphone Amplifier - St...
from ₹14,264 1 store
Compare this IEM with
Frequently asked questions
What is the price of Fosi Audio IM4 in India?
Fosi Audio IM4 starts at ₹9,509 from 1 tracked store, and the lowest price on record this past year is ₹9,509. Every store's current offer sits side by side on this page.
How does Fosi Audio IM4 sound?
Its frequency response reads Warm. From an in-ear monitor, a dd driver configuration - the curve is that family's typical response, not a lab measurement of this exact unit. The listen section on this page plays a simulation of that tuning on the same track, drawn from its tuning-family estimate - hear it before you buy.
Is there a free EQ preset for Fosi Audio IM4?
Yes - this page generates a free AutoEq-style parametric preset for Fosi Audio IM4 from its estimated frequency response, downloadable as an EqualizerAPO .txt that works with Peace/EqualizerAPO on Windows and compatible players.
Does Fosi Audio IM4 have a detachable cable?
The listings on file spec a detachable 0.78mm 2-pin connector, so replacement and upgrade cables that fit Fosi Audio IM4 are listed on this page with current prices.