TECHNICAL SPECIFICATIONSPLANAR ONE
PLANAR ONE
Engineering Data Sheet
Exhaustive acoustic, electronic, and structural specifications verified by high-precision Audio Precision APx555B analyzers.
Pre-Order PLANAR ONE →⚡Audio Architecture & DAC
Digital-to-Analog Converters
Dual ESS Sabre ES9039PRO HyperStream IV (1 per stereo channel)
Headphone Amplifier
Discrete Class-A Fully Balanced Differential Architecture
Dynamic Range (DNR)
132 dB (A-weighted, balanced 4.4mm)
Total Harmonic Distortion (THD+N)
< 0.00008% (-122 dB) @ 1 kHz, 32Ω load
Stereo Crosstalk & Separation
> 135 dB @ 1 kHz
Frequency Response
5 Hz – 90 kHz (±0.05 dB)
Clocking System
Dual Ultra-Low Phase Noise Femtosecond Crystal Oscillators (45.1584 MHz / 49.152 MHz)
Impedance Driving Capability
16Ω to 600Ω (auto-sensing gain stage)
⚡Audio Outputs & Headroom
Balanced 4.4mm Pentaconn
650 mW + 650 mW @ 32Ω | 90 mW + 90 mW @ 300Ω | 4.2V RMS
Single-Ended 3.5mm Headphone
280 mW + 280 mW @ 32Ω | 38 mW + 38 mW @ 300Ω | 2.1V RMS
Output Impedance
0.2Ω (3.5mm SE) / 0.4Ω (4.4mm Balanced)
⚡Display & Touchscreen
Display Panel
4.1-inch Edge-to-Edge Ultra-Retina XDR OLED
Resolution & Density
1280 x 720 pixels (360 ppi), true 1:1 vinyl album display ratio
Refresh Rate
120Hz ProMotion with dynamic refresh down to 10Hz
Peak Brightness
2,200 nits outdoor daylight legible
Surface Glass
Continuous curved sapphire-infused ceramic glass with oleophobic coating
⚡Storage, Battery & Power
Internal Storage Tiers
512 GB / 1 TB / 2 TB High-Speed PCIe 4.0 NVMe Solid-State
Storage Capacity Estimate
Up to 50,000 Lossless FLAC/ALAC tracks or 5,000 Studio DSD albums
Battery Chemistry
4,500 mAh Solid-State Lithium Polymer
Continuous Playback Time
Up to 100 hours (3.5mm FLAC) / 45 hours (4.4mm balanced DSD512)
Fast Charging
USB-C Power Delivery 45W (0% to 80% in 35 minutes)
⚡Connectivity & Wireless
Wired Port
USB-C 40Gbps (Thunderbolt 4 compatible / USB 3.2 Gen 2)
Wi-Fi
Wi-Fi 7 (802.11be) Dual-Band for bit-perfect offline caching
Bluetooth
Bluetooth 5.4 with aptX Lossless, LDAC, LHDC, and AAC
⚡Chassis & Dimensions
Materials
Grade 5 Aerospace Titanium frame, Diamond-Like Carbon mirror stainless steel rear plate
Dimensions
104 mm x 62 mm x 10.8 mm
Weight
148 grams (5.22 oz)
⚡In The Box
Hardware
PLANAR ONE Digital Audio Player
Cables
Reinforced Braided USB-C to USB-C 40Gbps Cable (1.2m)
Protection
Microfiber Polishing Cloth & Velvet Travel Pouch
Documentation
Serialized Certificate of Acoustic Calibration signed by Lead Engineer