PENON QUATTRO 4 DD IEM vs FiR Audio Frontier

Every tracked fact about the two, side by side - prices, history lows, ratings and measured tuning. No verdict: which one to buy is the visitor's decision, always.

PENON QUATTRO 4 DD IEM Penon Out of stock at every tracked store Lowest on record ₹31,491 on Friday, 25th Sept, 2026 Full prices & history

FiR Audio Frontier Series Neon 4 | Universal Hybrid IEMs

FiR Audio Frontier Series Neon 4 Out of stock at every tracked store Lowest on record ₹2,21,785 on Thursday, 15th Oct, 2026 ★★★★★ 5.0 5.0 · 1 reviews Full prices & history

What is being compared

Both sides are in-ear monitors. The rows below are the facts each store publishes for this shelf - driver arrangement, impedance, sensitivity, plug and connectivity. A dash means the listing does not state that spec.

Spec PENON QUATTRO 4 DD IEM FiR Audio Frontier

Driver configuration Dynamic (DD) —

Driver setup 4 DD —

Connectivity Wired —

Connector 2-pin —

Plug 4.4mm balanced —

Measured tuning, side by side

Both curves are real community measurements (gold: PENON QUATTRO 4 DD IEM · ink: FiR Audio Frontier). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

PENON QUATTRO 4 DD IEM FiR Audio Frontier

Tuning distance ±1.77 dB RMS 89% match - Very close. Computed on a shared 40-point log grid, 20 Hz–10 kHz. A measurement-space fact, not a promise two ears agree.

Bass · 20–250 Hz PENON QUATTRO 4 DD IEM +0.1 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means PENON QUATTRO 4 DD IEM plays louder there on the measured files; minus means FiR Audio Frontier does.

Mids · 250–2,000 Hz PENON QUATTRO 4 DD IEM −0.1 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means PENON QUATTRO 4 DD IEM plays louder there on the measured files; minus means FiR Audio Frontier does.

Treble · 2,000–10,000 Hz PENON QUATTRO 4 DD IEM +2.7 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means PENON QUATTRO 4 DD IEM plays louder there on the measured files; minus means FiR Audio Frontier does.

What a curve cannot seeBuild, driver QC unit-to-unit, comfort, isolation, accessories, warranty and resale value sit outside the graph - usually what the pricier one is charging for.

Price over the last 30 days

Daily lowest price across every tracked store, from the site's own price history. The line is one product's own range - the two cards are not drawn to a shared scale.

PENON QUATTRO 4 DD IEM No tracked offer in stock In stock at 0 tracked stores

FiR Audio Frontier Series Neon 4 No tracked offer in stock In stock at 0 tracked stores

Price gap right now n/a Both sides need a tracked offer to compare.

Stores with it in stock 0 vs 0 Active stores carrying each one right now - more stores usually means easier replacement and a steadier price.

The decision, factually

Cheaper right now n/a Lowest current price across all tracked stores.

Deepest discount ever seen PENON QUATTRO 4 DD IEM From each product's own recorded price history.

This page reports facts and expresses no opinion on which to purchase.

Keep going

EQ preset: PENON QUATTRO 4 DD IEM EQ preset: FiR Audio Frontier All IEMs More comparisons