FiiO KA11
USB-DAC
FiiO K11
Display, gain switch, USB-DAC
Fosi Audio K7
Display, Tone control, Bluetooth
Mackie Hm-4
FiiO Jiezi A
Tone control, USB-DAC
FiiO BTR17
Display, Microphones, Tone control, USB-DAC, Bluetooth
FiiO KA13
gain switch, USB-DAC
FiiO K11 R2R
FiiO EA13
Display
FiiO KA15
iFi Audio GO link 2
FiiO K13 R2R
Display, gain switch, Tone control, USB-DAC, Bluetooth
Behringer HA400 Microamp
Fosi Audio ZH3
Display, gain switch
