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So I bought a spectacular new integrated amp: the Simaudio Evolution 600i about a month ago. It's a great amp, but a week ago I had trouble turning it on at the face of the unit and on the remote control. About a minute later it started. I told my dealer about the problem and am adopting a wait and see attitude. Could this be a consequence of the protection circuit? What else could be involved? Should I worry? Thankfully I do have a ten year warranty.
Did you try powering it off and on again from the rear switch? I believe the amp performs a self-test when you power it on from the rear switch, and if the self test fails the LED will flash.
On my Simaudio amps, the LED will also flash if the protection circuit kicks in. I've had this happen to me a couple times when I touched the amp after walking across the carpet in slippers during the winter and got a static electricity shock.
I don't think it will wake from standby if there is a fault or certain operating parameters are not within limits, so if it happens again I wouldn't ignore it.
The problem hasn't recurred, but if it does I'll try to reset the amp. Had no idea the protection circuit is so sensitive! I guess that's not a bad thing where the object is to prevent any damage to the amp.
I'm not certain but it sounds like a case of an over complicated turn-ON process, possibly involving a microprocessor and software. Some things are better served by a simple hardware RC time constant IMHO.
If it happens often enough to be annoying, I would worry. Get it fixed.
I should say that the unit would come on after the power button was pushed again a minute later. The unit did not come on all by itself.
The main power switch is on the rear. Since I change out cables and fuses, I occasionally power down the Simaudio 600i, and power it back up. At the front, the Standby button works instantaneously.
Upon initial power-up, my unit switches to the Balanced input, with a volume level of "30.0."
Whil I wouldn't exactly worry, I would keep tabs on this issue. Take notes. If it persists, definitely have the dealer check out your unit.
-Lummy The Loch Monster
How does that Oppo sound with the rest of your system?
Also, have you considered moving up to the 700i? I was thinking about a trade-up in a couple of years.
As long as the Oppo BDP-95 is used with powercords and interconnects which do NOT roll off the treble, it is fine, far superior to the overrated BDP-83 I used to have.
My colleagues and I have limited experience with the Simaudio 700i. When we (a) were in larger rooms, (b) were using larger speakers from the likes of B&W, Dynaudio, Magnepan, Penaudio, Sonus Faber, Thiel, Totem, and scores other, (c) maintained the same volume levels, and (d) made no other changes other than the amps, the 700i, versus the 600i, will preserve more body, exercise more control, and more firmly anchor the images within the soundstage. But it's a small qualitative difference.
Whether or not I were in the market, I would skip the 700i, and, for roughly the same price, get a package consisting of (a) the sonically-invisible 740p, (b) a transparent interconnect, and (c) one of Simaudio's cheaper power amps.
Hmmm, now that I check my own work, I see that I never did finish reviewing the 600i. But in the meantime, check out this about the Hi-Fi Tuning Supreme In the 600i. Hint: if you can find it, the Hi-Fi Tuning Silverstar is even better, allowing the 600i to get closer to goal of being like NO amp at all.
"Hmmm, now that I check my own work, I see that I never did finish reviewing the 600i."
Yeah, I've got about 30 projects that aren't finished.
Fortunately, they're all personal. None of them are for professional use. I tend to finish my professional work.
Thanks for the info! I had no idea that fuses made such a difference!
To recap, the Simaudio 600i has just one fuse. Moreover, it is externally located, right next to the rear panel On/Off rocker switch. Thus, you don't have to open the chassis, in order to access the fuse. All you need is a small flathead screwdriver.
My 600i is a few years old. It utilizes a large, 32mm, fast-blow, 5.0A fuse. Current-production 600is may use a 6.0A fuse, so check the manual and the OEM fuse itself.
Off on a tangent, I'm currently reviewing Simaudio's 820S outboard power supply, which uses two fuses. I just finished reviewing its " F1 " fuse. Those are the small 20mm types, but you can get an idea, about what some of the brands/models do.
Because the Simaudio gear has enough resolution, things like fuses do have an influence. But only you should decide if those sonic changes are for better, worse, or quid pro quo.
I'm thinking that maybe the problem is with the software that the amp runs. If you periodically power the unit down by pressing the power switch in the back, it might reset the amp before this problem occurs.
I can vouch for the three samples of 600i my colleagues and I have lived with. Shut the unit off, via the back panel rocker switch. When you power the unit back up, it lies in standby mode. Then you have to use the front panel's Standby button to bring the unit into operation. WIth all three units, the full-on defaults to the balanced input, at volume level 30.0.
Each press of the rear panel ON/OFF and front panel Standby buttons elicits a quick response from the unit. Should take seconds, not a full minute .
Unless it has a time delay, like in many tube preamps, it should turn on if a second or two.
IF there is no time delay feature then you do have a problem.
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