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In Reply to: RE: All the ARC I ever bought were used... posted by mbnx01 on September 26, 2014 at 10:58:49
CJ claims that they use the best quality parts they can put in for the budget, and it is certainly true, if you know what to look for. They have a philosophy of less is more, and thus cut out a lot of frills which most listeners do not use.
Their lowly PV-10 uses, for example big Vishay resistors at $10 a pop for their B+ dropping resisters. You don't see that in even the big ARC preamps. The rest are Dow Corning which are very stable and long lasting. The premier series all use naked Vishays which they source from Europe.
Their Premier series preamps all used the OHFC RCA jacks, for example, Something I don't see even on the ARC reference preamps (at least not the original ones). With up to 9 pairs of those jacks, just check up the price from Sound Connections! Before the Chinese drove the price of copper up, they were $50 a pair.
And then just look at the parts count of the lowly PV-10 and compare it to an ARC LS7. No comparison, the CJ has way more parts, especially film capacitors. The board of the LS-6 measures a measly 6 inch square despite being in a 19 inch faceplate chassis.
As for Rogue: I remember their initial foray into CES. In Looking over the interior of an amp, I commented that the B+ trace running adjacent to the ground was going to arc over time. Happened to be the designer I was talking to, although I didn't know it at the time. He was taken aback but next year, when I walked into the booth, he came right up and told me the arcing issue had occurred and they had to slightly modify the boards....
FWIW and YMMV, of course.
Follow Ups:
Using the best parts doesn't mean a lot if they can't deliver on the sonics that customers seek. I never cared much for the "CJ sound". Some folks love 'em.
It wasn't uncommon for ARC amps like the VT100 series to literally smoke and burn PCB traces because ARC chose not to use fuses. They've all been there and to Rogue's credit they improved their layout per your comments.
I believe hifinutt is given credit by Rogue for suggesting the use of KT120 power tubes in the Cronus Magnum.
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