New Audio Note UK ONGAKU Shinguru 211 Single Ended Triode mono amplifiers are effectively a SET 211 (rather than PSE) version of the GAKU-On, or in other words a mono ONGAKU with a transformer coupled fully balanced / XLR input, side mounted like the ONGAKU / GAKU-On etc.
That’s a separate earth connector in the drawing on the rear panel, next to the fuse holders, not an RCA socket.
