Model/name K9 Pro ESS K9 K7
Appearance Dimension 200*220*72mm 200*220*72mm ≈120 * 168 * 55mm
Weight ≈2700g ≈2660g ≈610g
Knob Aluminum alloy PVD gold Aluminum alloy oxide black Aluminum alloy oxide black
Material&color All aluminum alloy, black All aluminum alloy, black All aluminum alloy, black
Ports Power supply AC + built-in linear power supply AC + built-in linear power supply External switching DC power supply 12V 2A
Digital input USB; OPT; COAX; Bluetooth USB; OPT; COAX; Bluetooth USB; OPT; COAX
Analog input RCA; 4.4mm balanced input RCA; 4.4mm balanced input RCA；
USB ports USB B；Type C USB B； USB B；
Phone out BAL: XLR4; 4.4mmSE: 6.35mm/3.5mm BAL: XLR4; 4.4mmSE: 6.35mm/3.5mm BAL: 4.4mmSE: 6.35mm/3.5mm
Line out RCA/BAL XLR3 * 2 RCA/BAL XLR3 * 3 RCA
Features Special power-circuit design Digital-analog isolation + multiple independent LDOs Digital-analog isolation + multiple independent LDOs Multiple independent LDOs
Circuit levels Six levels Six levels Six levels
Clock design Double crystal oscillators Double crystal oscillators Double crystal oscillators
Filters Seven Three /
PEQ PEQ will be supported in the future, available on Bluetooth only Seven presets + three custom PEQs, available on Bluetooth only /
USB XMOS XUF208 XMOS XUF208 XMOS XUF208
MQA Renderer - -
Max supported sampling rate 384K 32BIT/DSD256 768K 32BIT/DSD512 384K 32BIT/DSD256
Bluetooth chip QCC5124 QCC5124 /
DAC chips ES9038Pro*2 ES9068AS*2 AK4493S*2
Output mode LO/PRE/PO LO/PRE/PO LO/PRE/PO
Gain H/M/L H/M/L H/L
AMP module Dual THX AAA 788+ Dual THX AAA 788+ Dual THX AAA 788+
Performance Max output power(undistorted) SE：≥2100mW(32Ω），≥281mW(300Ω)BAL：≥2100mW(32Ω）,≥1100mW(300Ω) SE：≥1500mW(32Ω），≥200mW(300Ω)BAL：≥2000mW(32Ω）,≥780mW(300Ω) SE：≥1220mW(32Ω）≥140mW（300Ω)BAL：≥2000mW≥560mW（300Ω)
Peak output voltage ＞52Vpp ＞42Vpp ≥37.7Vpp
SNR ≥ 129dB (dbA) ≥ 124dB (dbA) ≥ 123dB (dbA)
Other APP Control Android/iOS Android/iOS /