Accuphase E-408 voltage conversion

I would try reaching out to Accuphase directly.

My preamp and phonostage are fed by a power supply which provides 12V, and the manufacturer sent a jumper from Europe and the instruction sheet for converting it from 110v to 230v.

(Another US manufacturer’s tube amp was wired to 230v from 110v by a local electronic repair place… they pretty much know how to do it if it is a direct transformer tap, and not via a jumper or two… which does the same thing.)

And PrimaLuna sent the instructions for which transformer taps to move the mains for 110v to 230v conversion.

I suspect that Accuphase would do similar, but that is mostly based upon my positive impression of them as a very reputable high end company. I could be wrong, but my impression is that Accuphase and Luxman are sort of high end there.
(Or I would be pretty surprised if they did not help.)

So it seems like it is worth a try to email them.

Best of luck with it. I suspect it is a nice piece of gear.

(Or it truely sucks and I’ll give $19.50 for it. 😗 )

Thank you for your response, unfortunately the manufacturer does not provide such information. I tried to find a service manual, but it is not freely available.

A photo of the inside might help…
Or a local electronics repair place.

They just put on a transformer and measure the wires from the other transformer taps to find the right ones.

On my Audible Illusions line stage, the transformer is either 110v or 230v, so there was no moving to different winding taps, and they wanted $750 to provide the 230v version. And it still sits on a 230v—>110v transformer.

You should be able to pick up a transformer for going from 230v —> 100v

Thanks for the answer, I can not upload a photo, the forum interface is incomprehensible to me. I have an external step-down transformer, but I would like to convert the amplifier to 230 volts. On various forums, users confirm that all Accuphase amplifiers have multi-voltage transformers that can be switched to 100, 120, 220-240 volts.

In ^that case^ then once it is on the transformer, the electronics place (or the tech) probes the remaining taps to see which one has 220/240v.

Then that is hooked up to the mains, and the 100v tap is disconnected.

One unconnected transformer tap line should read 120v and another 230v or you could have separate lines for 220v and 240v, but I think it I would just be a single 230v.
There should be 3 plus another as a common on one side of the transformer..

The other side of the transformer should have either two coming out going to a diode bridge, and maybe a third line as a common tied to the chassis or the ground.
It is possible that they all come out and go in on the same side.

Is there is a transformer part manufacture and part number on it?