Shinai bypass solution

[Janacek]

Je reviens sur le commutateur
https://forum.audiogon.com/discussions/d...e-luxman-a
Attention si on mélange système tube avec transistors

Citation :The problem of using a switcher to select between a tube amp or solid state amp connect to one speaker is most tube amp is not safe to operated without a load and can caused blown output tubes and transformer !!
Accident happens if someone forget to turn off the tube amp before switching! 

A safer way is connect a 150ohm 10watt resistor on the tube amp each output terminals. 

Or use this design to switch amps on the fly : 

https://ucarecdn.audiogon.com/d3ee951e-1868-4baf-986b-d1b2f92cb2fe/-/autorotate/yes/

The 3P3T rotary switch must use a shorting / make before break contact style switch like a Grayhill 44A45-03-01-03S, which can switch 100watt@4ohm or 200watt@8ohm.
R1 is a dummy load which can be 25 to 50 ohm and rated 25watt or higher will be sufficient