Yes, since the SC-55 only ever see the secondary voltage anyway. But you can also run the Japanese AC adapter with 120v. It's a transformer-based PSU, so it will probably output 10.8v in that case. The SC-55 however won't care, since all the voltage regulation happens inside the unit and that works with anything between 7v and 12v.

derSammler wrote:

Yes, since the SC-55 only ever see the secondary voltage anyway. But you can also run the Japanese AC adapter with 120v. It's a transformer-based PSU, so it will probably output 10.8v in that case. The SC-55 however won't care, since all the voltage regulation happens inside the unit and that works with anything between 7v and 12v.

oh ok cool. so no real risk of using the japanese AC adapter it came with? I was just gonna buy an additional american one but if there really isnt any risk then I won't bother.

It will generate a bit more heat, but nothing to worry about. A transformer-based PSU is not problematic in this regard.

alright thanks for your help man

Yeah I actually use my JPN PSU with my JPN TurboDUO and have for years without any issue. The adapter gets a bit warmer than it likely would have normally and I ended up replacing the VRs inside that console with DC-DC switching converters so heat isn't a problem either. But to answer your question, you can use an US PSU with the JPN SC-55 without issue. In fact I'm using a Sega Genesis model 1 PSU with my JPN Edirol SD-20. I do have the original JPN PSU for it, but knew a spare Genesis adapter would work fine and opted to go that route.

CrossBow777 wrote:

Yeah I actually use my JPN PSU with my JPN TurboDUO and have for years without any issue. The adapter gets a bit warmer than it likely would have normally and I ended up replacing the VRs inside that console with DC-DC switching converters so heat isn't a problem either. But to answer your question, you can use an US PSU with the JPN SC-55 without issue. In fact I'm using a Sega Genesis model 1 PSU with my JPN Edirol SD-20. I do have the original JPN PSU for it, but knew a spare Genesis adapter would work fine and opted to go that route.

yea I use model 1 genesis plug for my top loading famicom and that works pretty good. I knew in alot of cases it was pretty safe but I'm an idiot and wanted to make sure.