Voltage conversion of Accuphase E-650

Thank you!

I went ahead and did this myself and tested successfully with a dim bulb tester.

The amp sounds fantastic! It is somehow both crisp and clear, yet rich and slightly warm, with great texture and soundstage depth.

For others who might use this thread for reference, here are some more photos of the board removed, ready to work on, and post-conversion:

https://photos.app.goo.gl/7rQ1gaZM6zDN1E47A

Initially I thought it was one big board so I was going to take it to a pro. After being turned down by my usual tech (turns out they are an authorized Accuphase repair center and thus were told by Japan they couldn’t do it), I took another look under the hood and found that the connectors are actually on a smaller board secured by just 3 screws. I unplugged the 2 harnesses, 3 wires (blue, yellow, brown), and boom--easy access.

@eugene81
Congrats! Thanks for posting the photos.

Is there any guide how should 230v/240v label should be? I am eyeing for a 220v pre-owned unit but need to convert that into either a 230v or preferably a 240v version
Appreciate some advise

Hi everyone, 

I have the E-600 amp and I am thinking of converting the voltage for it. 

Does this conversion change the sound quality? 

If I don't have dim bulb tester, is there any other way to test?

Thank you.