iBasso SR1 High Definition Headphone with 50mm silicone suspension driver, Tesla technology, semi-open design and wide soundstage. It offers excellent separation and natural tonality for immersive listening. The lightweight build ensures comfort during long sessions while detachable cables provide flexibility.

About iBasso SR1
The iBasso SR1 brings advanced driver technology to the table with its custom 50mm dynamic driver. This driver features a bio-cellulose cone mounted on silicone suspension paired with Tesla magnetic flux technology. The setup creates enhanced magnetic power that improves speed and dynamics. Listeners enjoy powerful sound that still captures subtle micro-details with impressive clarity.
The acoustic design of the SR1 relies on a semi-open back structure in a full-sized over-ear format. This choice opens up the presentation to deliver a large soundstage. Excellent separation and layering emerge naturally while tonality stays balanced and engaging. Music gains depth and realism that keeps you immersed for long sessions.
Technical specifications support versatile performance across many setups. The frequency response reaches from 3Hz to 40kHz for deep bass extension and sparkling highs. Sensitivity hits 108dB at 1kHz and impedance sits at a low 22 ohms. Portable players drive the headphones effortlessly without losing any resolution or impact.
Build quality and comfort make daily use enjoyable with the SR1. CNC aluminum alloy cup rings and metal grill guards provide solid protection around the drivers. A spring steel headband combined with Tuscan leather accents keeps the total weight at 420g for light feel during extended listening. Detachable MMCX cables with a locking mechanism allow secure connections and easy upgrades when needed.
Specifications
| Specification | Value |
|---|---|
| Driver Type | 50mm dynamic |
| Operating Principle | Semi-open |
| Frequency Response | 3Hz-40kHz |
| Sensitivity | 108dB at 1kHz |
| Impedance | 22 ohms |
| THD | <1% at 1kHz/1mW |
| Cable Connection | Detachable MMCX |
| Weight | 420g |
| Headband Material | Spring steel |
| Cup Construction | CNC aluminum alloy |
| Grill Material | Metal |
| Ear Pad Type | Replaceable leather |
| Price | $399 |
Reviews
Sound opens up beautifully with plenty of space between instruments. Bass feels controlled yet punchy and mids stay smooth during long listening. Comfort surprised me since the headphones stay light on my head even after hours.
Details pop out clearly without any harshness in the highs. I switch cables easily and the lock keeps everything secure. Music comes alive with natural tone that makes vocals and guitars feel real and engaging.
Wide stage helps me hear layers I missed before in familiar tracks. Weight feels balanced and the headband adjusts perfectly. Overall it brings enjoyable clarity that works well with my portable player.