Koss
Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black
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 : ₹9,458 on 22 Oct 2026
Highest price : ₹9,695 on 12 Oct 2026
Average price : ₹9,606
Information about Stores
Turntable Lab: Turntable Lab (New York, since 1999). Returns per their Return Policy page; vinyl records are final sale where stated; support at customerservice@turntablelab.com. Ships from the US - customs may apply. source
Send Alerts for price / stock
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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 Measured: Neutral
The main line is the actual measured response of this exact product (source: AutoEq · Rtings · on file since 2026-09-21) - its sound signature reads Neutral. The faint gray line is its tuning-family estimate, shown only for comparison. Open the full graph page →
Measured bands vs the mids anchor (300–1000 Hz mean): bass +2.1 dB · treble +0.2 dB · signature reads Neutral
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 measured curve shape through the EQ - flip live and hear exactly what the tuning 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.
Tuning tools
EQ presets - Equalizer APO, Qudelix-5K, Wavelet
Generated from this product's measured frequency response toward an approximate Harman over-ear (OE 2018) target. 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: 60 ohm.
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.
Portable DACs & amps that drive this headphone
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 ₹14,188 1 store
Sounds like
How the match is computed: each measured curve is interpolated linearly in log-frequency onto a shared log-spaced grid of 40 points, 20 Hz-10 kHz, then level-aligned by its mean over the grid's 200 Hz-1 kHz slice (12 points, ~186 Hz-~1.07 kHz), so rig level offsets don't count. The root-mean-square (RMS) of the 40 dB differences at those same frequencies is the distance: similarity % = 100 - 6 × RMS dB, rounded, clamped to 0-100 - every 1 dB of RMS difference costs exactly 6 points. Labels: under 1 dB "Near identical", under 2.5 "Very close", under 4 "Close". Matches past 4 dB RMS are never shown - past that, treble differences are clearly audible and calling two tunings alike isn't defensible, so this section never appears without a match under 4 dB. Only real measurements enter the index (20+ raw points per curve); matches pair the same form factor only (in-ear with in-ear, headphone with headphone - rigs are never mixed), and curves under 0.5 dB apart count as the same-tuning re-listing, never matched - so a match is always a different model. A measurement-space fact, not a promise two ears agree.
A match covers tuning only: two products can measure near-identical yet differ in everything a frequency-response curve cannot see - build and shell material (metal vs plastic), durability, driver matching and QC unit-to-unit, comfort, fit and isolation, included cable and accessories, warranty and after-sales service, resale value. That's usually what the pricier one charges for - weigh those against the price gap before paying more for the "same" sound.
Sennheiser HD 4.40 BT - Wireless Headphone
±1.93 dB RMS · Very close (88% match)
60 vs 18 ohm · 12% tuning apart
curve graph ↗ · overlay & hear both
Compare this headphone with
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Frequently asked questions
What is the price of Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black in India?
Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black starts at ₹9,458 from 1 tracked store, and the lowest price on record this past year is ₹9,458. Every store's current offer sits side by side on this page.
How does Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black sound?
Its frequency response reads Harman-style. From a headphone, a wireless design, a 60Ω impedance - 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 the actual measured curve of this exact product - hear it before you buy.
Is there a free EQ preset for Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black?
Yes - this page generates a free AutoEq-style parametric preset for Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black from its measured frequency response, downloadable as an EqualizerAPO .txt that works with Peace/EqualizerAPO on Windows and compatible players.
What sounds like Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black?
The sound-alike matcher compares measured frequency-response curves and lists the 6 closest matches to Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black on this page, each with its own current prices across stores.
