does any r2r ladder dac have standby power mode?

I was not worried about power! some dac like bryston have a standby mode ! it was just a question, why do you have second world problems yeesh PS  audio gd runs class A on power supply HOT if you do not know

I do not have any of these dacs and was just wondering what they did as far as heat swing from a cold start to running hot . also how long it takes to get to a full blossom sound , longevity of parts ? heat kills electronics but class A sound the best. I do not want to leave it on 24/7 so I was just looking for maybe an option in these r2r dacs as there is no details I see in the audio gd and the denafrips sites as I thought maybe the owners would chime in.  thanks for the replies 

denafrips just email me back if anybody is interested the denafrips dac have a standby mode which will give a warm start and keep the r2r in thermal equilibrium temps!!!

I just check with underwood hifi, the audio gd dacs remain on all the time with no standby.

hey soix , if you do not have anything nice to say then say nothing and mind your own stereo!!