General Specifications

DAC: AK4493EQ x2

MCU: XBurst 1.0GHz, based on MIPS

Vacuum tube: Raytueon JAN6418 ×2

Storage: one TF card, up to 1TB

Bluetooth: 3v5.0 (LDAC, UAT, AAC, SBC)

Display screen: IPS 3.2 '(480 x 360)

USB: Type-C (digital audio, charging, OTG)

Touch sensing: Capacitive touch screen

Battery: 3.7 V 4100 mAh

WiFi: IEEE802.11,2.4GHz

Net weight: 195 g (士 10 g)

Dimension: 115.2x63.5x18.9 (millimeter)

Freq. response: 20Hz-20kHz (土 0.2dB, Fs = 192kHz)

Battery life: 9 hours - vacuum tube at 3.5mm single-ended / 11 hours - solid state at 3.5mm single-ended / 9 hours at 4.4mm / Balanced test condition : display off, all wireless devices off, medium gain, volume 30, 32 ohm headphone, playback 44.1 kHz WAV music files

Charging time: ~ 3.5H @ Standard charger (5V-2A)

USB audio output: Connector: USB-C, PCM: up to 32-bit / 768 kHz, DSD: up to DSD512 (native), DSD256 (DoP), PCM 88.2 kHz (D2P)

USB Audio DAC: Connector: USB-C, Asynchronous USB, Class 2.0 Audio, Compatible with Windows (drivers required), Mac OS, Android (partial), PCM: up to 32-bit / 384 kHz, DSD: up to DSD256 (native), DSD128 (DoP)

S/PDIF coaxial: Connector: USB-C (75 ohm), PCM: up to 192 kHz, DSD: up to DSD64 (DoP)

Bluetooth: Transmit codec: UAT (up to 192 kHz), LDAC (up to 96 kHz), AAC (up to 48 kHz), sBC (up to 48 kHz), Receive codec: UAT (up to 192 kHz), LDAC (up to 96 kHz), AAC (up to 48 kHz), SBC (up to 48 kHz)

Power rating: 250mW @ 32ohm / solid state /3.5PO, 53mW @ 150ohm / solid state /3.5PO, 27mW @ 300ohm / solid state /3.5PO, 130mW @ 32ohm / vacuum tube /3. 5PO 30mW, @ 150ohm / Vacuum Tube /3.5PO, 15mW @ 300ohm / Vacuum Tube /3.5P, 800mW @ 32ohm / 4.4PO, 220mW @ 150ohm / 4.4PO, 110mW @ 300ohm / 4.4PO

Output impedance: 0.6ohm @ 3.5PO; 1 ohm at 4.4PO

THD + N: 0.003% (@ 3.5PO, 1kHz, Fs = 44.1kHz; 20Hz-20kHz, A-weighted; solid state), 0.002% (@ 4.4 PO, 1kHz, Fs = 44.1kHz; 20Hz-20kHz, A-weighted; solid state), 0.0008% (@ 3.5LO / 4.4LO, 1kHz, Fs = 44.1kHz; 20Hz-20kHz, A-weighted)

Dynamic Range: 118dB (@ 3.5PO, Fs = 44.1kHz; 20Hz-20kHz, A-weighted; solid state), 119dB (@ 4.4PO Fs = 44.1kHz; 20Hz-20kHz, A-weighted), 118dB (@ 3.5LO / 4.4LOFs = 44kHz; 20Hz-20kHz, A-weighted)

SN Ratio: 118dB (@ 3.5PO, Fs = 44.1kHz; 20Hz-20kHz, A-weighted; solid state), 119dB (@ 4.4PO Fs = 44.1kHz; 20Hz-20kHz, A-weighted), 118dB (@ 3.5LO / 4.4LOFs = 44kHz; 20Hz-20kHz, A-weighted)

Channel separation: 75dB / 100dB (@ 3.5PO / 3.5LO 1kHz, Fs = 44.1kHz), 110dB (@ 4.4PO / LO 1kHz, Fs = 44.1kHz)

Output level: 2.0V / 1.5V / 1.0V (@ 10K ohms, 3.5LO), 4.0V / 3.oV / 2.oV (@ 600ohm, 4.4LO)