Originally Posted by Kendoji
I just ordered a cheap RCA 5Y3GT and a couple of Tungsram EL84s. Should be fun.
Regarding the hum, I put my ear to the transformer last night (with no music playing) and it's definitely humming loudly. @ Those of you who aren't getting any hum, does yours do the same?
Also, mine came with the Valve Art 274B rectifier - which isn't the one mentioned on the product pages. Did everyone else get this rectifier too?
My CSP2+ and Taboo III are dead silent. I had them foil lined when I ordered them to reduce the likelihood of EMI/hum interference from any of my computer equipment which sits right next to my Decware equipment. I did this based on the fact that the Decware phono stage ZP3 is foil lined for EMI shielding. I figured it couldn't hurt to do it for the CSP and Taboo since their wooden cases are not normally foil lined. It has to be requested at the time of order. I'm not sure this will reduce or solve your hum problem, particularly, if, as you believe, it might be due to transformer variability.
My Taboo III came with the VA 274B. Steve tells me that he believes the VA274B is just a slightly better grade 5U4G in a 274B bottle. He seems to be shipping these tubes more often in Taboo IIIs, probably because they sound better than Chinese Ruby 5U4Gs. My stock VA 274B started to arc (flash over) after something like 100 hours of use. This is to be expected for most 274B type tubes because the Taboo III use 47uf caps and 274Bs want to see 10uf or less otherwise they will arc and eventually die. When I spoke to Steve about it, he told me that it was probably a weak tube from the beginning and to just trash it. He says, so far, the VA274B is holding up if you get a good one. Anyway, since I like the sound of the VA 274B, I ordered two more cryoed VA274Bs from Cryoset and they have been working fine (so far, about 75 hours) in my CSP+ and Taboo III. I'm wondering if the cryo treatment helps toughen up the tubes.
Edited by Rizlaw - 8/14/13 at 7:58am