gbmcleod:
The AR i/50 is not a hybrid tube integrated. The audio signal path is all tube, push-pull design. 50W. The solid state elements are the panel controls and the Lexie tube displays. It has a headphone amp that may be solid state and optional solid state DAC and phono preamp modules. Hybrid implies that some components in the audio path are solid state (e.g. tubes in the preamp section but solid state in the amp or the reverse.) The i/50 has tubes in the driver and power sections.