Sseparate switch. Lucid switch is standard. Speaker/phones switch is on the opposite side if you have it - (Edit: Oops RHS) LHS viewed from the front.
Decware has four amp builders Steve D told us recently. It appears they build slightly differently!! A mark of hand-built, individual craft perhaps.
You might benefit from appropriate resistors, not sure. Chris J is an EE and might chime in... Chris?
For comparison, I briefly plugged my Beyer T1s into the Taboo when I first got mine (January this year). This combination sounded pretty ok - different but about level with my SS amps (Meier Concerto, Meier Classic, Violectric V100 - which I guess would be considered good midrange amps) and hybrid (Schiit Lyr, Matsu' 6922 tubes).
Whereas my LCD2s reached a completely new, higher level (detail, resolution, vividness) with the Taboo.
Less than two weeks ago I got the CSP2+... it has done for the T1s what the Taboo did for the LCD2.
I guess you could get an LCDx
I jest - I understand HD800 and LCD are different as chalk and cheese.
My Taboo is about 6 weeks behind the CSP2+ in the queue. I spoke with Steve about the switch and he felt I should not put it in. I got the impression that while there are four builders, the switch is a choice for the buyer, not a builders decision. I opted for no switch and I'll do the resistor/speaker thing with the amp. Can't wait for the pair of them to get here.