FiiO K13 R2R
Display, gain switch, Tone control, USB-DAC, Bluetooth
FiiO K11 R2R
Display, gain switch, USB-DAC
FiiO KA17
gain switch, USB-DAC
FiiO BTR17
Display, Microphones, Tone control, USB-DAC, Bluetooth
FiiO K7
IK Multimedia TONEX Plug
Bluetooth
Fosi Audio SK01 Kopfhörerverstärker und Preamp
gain switch
iFi Audio Go link Max
USB-DAC
IK Multimedia Arc On-Ear
Tone control
iFi Audio GO link 2
iFi Audio GO link
Fosi Audio K7
Display, Tone control, Bluetooth
FiiO K11
iFi Audio Zen Dac 3
Bass Boost, USB-DAC
