The Enhanced Successor to Phonon's Legendary SMB-02 Headphones Phonon’s meticulous tuning technology achieves a natural, ultra-low frequency range and exceptional acoustic balance regardless of music genre. The free-edge structure of the diaphragm realizes high-dimensional response performance and diaphragm movement with minimal energy loss, resulting in a frequency response that covers the entire high-resolution bandwidth and a wide dynamic range. High-dimensional Sonic Performance with Free Edge 40mm Driver Unit The diaphragm's revolutionary free-edge structure minimizes energy loss, offering a frequency response that spans the entire high-resolution spectrum. SMB-02G SMB-02 4400 SMB-01L SMB-01 03 STICK Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Customer Reviews 5.0 out of 5 stars 2 4.4 out of 5 stars 39 4.7 out of 5 stars 9 4.7 out of 5 stars 4 4.0 out of 5 stars 1 3.8 out of 5 stars 7 Price $320.00$320.00 $280.00$280.00 $280.00$280.00 $629.00$629.00 — no data $180.00$180.00 Construction Type Exchangeable closed and semi-open (option) Closed Closed Exchangeable closed and semi-open Exchangeable closed and semi-open (option) Stick type mono Driver Φ40mm driver Φ40mm driver Φ40mm driver Φ50mm driver Φ40mm driver Φ40mm driver Frequency Response 10 – 40,000Hz 20 – 20,000Hz 20 – 22,000Hz 10 – 40,000Hz 10 – 40,000Hz 10 – 24,000Hz Sound Characteristics Restrained bass, Solid, Spatial clarity, Vibrant Prominent bass, Sonic precision, Vibrant, Relatively spatial Prominent bass, Sonic precision, Less spatial Prominent bass and treble, Articulate spatial Imaging, Ultra transparent Balanced, Relatively spatial, Vibrant, Transparent Rich mid-low frequency. Less spatial, Dynamic Detachable Cable ✓ Fixed type Fixed type ✓ ✓ Fixed curling cord Purpose Music production, Game, Hi-Fi audio Professional Sound engineering, Hi-Fi audio Portable player, Music production Professional sound engineering, Hi-Fi audio Professional sound engineering, Hi-Fi audio DJ SPECIFICATIONS Type Enclosed dynamic / Semi-open (optional) Driver Free Edge Φ40mm driver unit Sensitivity 101dB/mW Frequency Response 10 - 40,000Hz Maximum Power 1,000mW Impedance 32Ω Weight 313g (excluding wires) Plug Φ6.3 / Φ3.5mm gold-plated stereo 2 ways plug Cable Detachable 3m (4 wires-type L/R independent ground wire connection) Accessories 1 detachable Cable 3m, 1 transport case