The DC-1 will be on the hot side of warm but not hot enough to hurt the hand even in standby.
Transport: Sony UBP-X700 UHD-Blu ray player spdif PC using Musiland Digital Times WASAPI via BNC connection - DAC: DC-1->XLR XPA-1 , RCA->Basx A-100 CD: Denon DCD 600 PCM 61 DAC. RCA Amp: XPA-1 gen 2 using XLR connections. Speakers: Axiom Audio m80 V3, Sennheisser HD700 headphones. two pairs 12 guage each bi-wire speaker cables per monoblock Headphone amp: Basx A-100 (INCREDIBLE VALUE!!)
The heat comes from voltage regulators, which are mounted to a beefy heatsink. It means they're regulating something. The BUF634 headphone amp drivers are on the same heatsink, meaning they will warm up quickly from the regulator heat and their sound will not be signal history dependent because they don't make their own heat. (Of course any sonic difference between warmed-up and not should be extremely subtle, unlike a big power amp.)
I leave mine on continuously. You don't want to cover the vents on top and leave it that way, but there is no problem with leaving it on.
Post by lehighvalleyjeff on Oct 2, 2016 21:10:18 GMT -5
The heat is normal on this unit. For whatever reason I decided to upgrade the little feet underneath to Tenderfeet from Herbie's Audio Lab which elevate it about half inch off the shelf. This significantly improved the ventilation (although probably unnecessary). It's a great unit and I'm loving the sound of mine. For what it's worth I think the Tenderfeet did offer a sonic improvement although I can't scientifically prove it. Either way for $60 it runs cool as a cucumber and I think it sounds better.
Emotiva XSP-1 g2, XPR-1 (x2), Stealth DC-1 DAC, Sony 222es SACD, Audioquest Midnight speaker cable, Audiotruth Emerald RCA cable, xlrs, Monster Power htp-5000 power conditioner and Monster Power AVS-2000 voltage regulator, Bello AT 484 Audio Rack, NHT 2.9 Speakers