New Audio Research Reference 150 SE

Tsushima, I do not know which parts were replaced. The only "obvious" change that I can perceive is the coupling caps. They are still white, but slightly different looking. That's about all I can say. I have no real idea about what else was done ... above or below the circuit board.

All I can say is that the amp sounds better than it did before. Kal told me off the cuff that the Ref 150 SE is roughly equivalent in SQ to the GS-150.

Bifwynne...

Pleased to hear that your decision to upgrade is delivering for you, were you advised as to the full parts list involved in the upgrade? and could you clarify please that Kal was referring to the main 2 Micro Farad/350V coupling caps? As folks should be made aware that an element of the SE upgrade kit may well replace their units Teflon CC's with the newer Gold PP film capacitor of Capacitor Gate fame.

Kal did say that the SE upgrade included new coupling caps, but he didn't state much else about their type or specs.

Btw, you described the new caps as Gold PP film types Other than a new white plastic can, I can't tell if the news caps are the type you describe. I just checked under the hood. The caps have a number designation of H3275. They are rated at 425V and I think 2 mF.

Tsushime, I just got a nasty shock when I put the cover back on. My finger brushed against the PS caps. Please control your curiosity. :(

Well that's me entirely confused Bif!!!

As far as I was aware the GS150 sports the newer gold coloured non Teflon coupling capacitors as do/did late production Ref150's like my own.

Have ARC now flipped once again and returned to the White Teflon's for SE models ???

Can you recall the colour of coupling caps as sported by your own Ref150
Prior to the upgrade?

Dull/flat white cans. The new caps are in shinier white plastic cans. As I previously posted, I do not know anything about the innards of the CCs. Why not call or e mail Kal and ask him? I learned my lesson about fiddling around with my amp.

In the meantime, the electric shock I previously posted about left me with an interesting side effect. Like Uncle Fester, I can energize light bulbs. I surmise that I absorbed 1040 joules of stored energy.