• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

China tube amp kits? EL84 Push-Pull

The board you show (Audionote copy) requires a triode pentode tube for gain/phase splitting. Probably more gain than needed.
A good alternative (I've built two, with old and one with new "iron") is the Tubelab SPP. See Tubelab forum on this site. The SPP uses EL84s, 12AT7s, and a GZ34 rectifier. Solid state rectifier optional. Even with plain vanilla Hammond trannies it sounded pretty darn good.

S.