KA101

About the KA101

The Kingko Audio KA-101 is a compact all-valve stereo integrated amplifier with a built-in transformer-coupled headphone amplifier. It uses four EL84 output tubes in a Class-AB push-pull output stage, with 12AX7 and 12AU7 small-signal tubes and a 5AR4 rectifier. It provides three line-level source inputs plus a PRE-IN input that bypasses the integrated preamp section for use as a standalone power amplifier. Features reported for the original KA-101 include automatic output-tube biasing, a selectable mains-voltage switch, large illuminated VU meters with a lamp on/off switch, custom-wound output/power transformers, and three selectable headphone-output impedance settings. Its 12 W per channel rating makes it most appropriate for efficient loudspeakers; a review recommends speakers around 90 dB sensitivity with a nominal 6–8 ohm load. The closely related KA101 Pro is also documented with the same core power, tube complement, inputs, dimensions, and weight; verify the exact revision from the unit’s rear panel or seller documentation.