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Old 2nd March 2011, 07:49 AM   #1
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Default Convert a Pass Labs x350 from 110v to 220v

Hi there!

I'm from Argentina and I want to buy a Pass Labs X350 power amp from the US market (audiogon)
So, is there anyone that know how and whether it's possible to convert the ampli to the EU voltage/Hertz i.e. from the 110v/60Hz to 220v/50Hz?

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Old 2nd March 2011, 02:06 PM   #2
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X350 had a dual tapped primary transformer. For 120V
operation the primary taps are run in parallel and for 240V
they are run in series. A competent technician should be
able to make the alteration.

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Old 4th March 2011, 12:25 AM   #3
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Thank you Nelson!! Do you know if I could download the service manual in PDF?
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Old 4th March 2011, 07:38 AM   #4
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Originally Posted by emdaudio View Post
Thank you Nelson!! Do you know if I could download the service manual in PDF?
Ha, you wish. But a competent tech will have no problem spotting the correct taps. I wouldn't be surprised if it is even marked on the silkscreen. Soldered or screwed?
Here's how it probably looks inside: Pass Labs X350 Inside - micsp15's Gallery - Canuck Audio Mart
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Old 1st June 2014, 04:00 PM   #5
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Hi guys, Does everybody know if Nelson's comments relate to the pre-amps as well? I mean is it possible to change 120V -> 240V the same way in X2.5 pre?
Thanks in advance and best regards,
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Old 1st June 2014, 04:48 PM   #6
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according to info I have , you can configure it's toroid primary to whatever between 100 and 240Vac
my Papa is smarter than your Nelson !
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