All new Air Tight SET monoblock ATM-2211 and Pre-amp ATC-5
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I don’t think they use different power transformers for different voltages. They most probably use the same double primary transformer which can be wired parallel or serial depending on the AC rating of the market. When you open the bottom panel you should see something like this.FWIW, I'll share the response to a fax to Airtight, which was the only way to get any info on this question of converting their amp to a different voltage. I'll note that the 2211 amp literally shows 120V/230V/240V and 50Hz/60Hz on the back panel, setting the expectation that changing voltage is possible/easy.
“Please contact distributor covering your country for the inquiry.
As for source power voltage, our products are made to each specific region to comply with local rules and regulations, and source power voltage can not be changed after shipment.
We do not offer any service to change product rated power voltage after shipment for new and 2nd hand products.“
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