230V Preamp USA

You need a step-UP (120 to 230V) but it will work.

Most amplifiers/preamps/equipment is designed for 50/60 hz.  I have a 240V European amplifier that runs great on US 240V 60hz power.  IIRC, 60 hz is acttually a little easier on the transformers that 50hz.  

You would have 2 options:  1.  Just install a 240V outlet, like you would for a dryer, welder, or any other high current appliance.  that is what I did.  2.  buy a step up (not down) transformer.  Tripp lite is a good brand.  buying the cheap ones off ebay just provides your high end equipment with poor power.  expect to spend $500 or more.  Oversize it some, although this isn't as important for a pre as it is for an amp.

I assume you've already investigated whther the amp is switchable or rewirable to 120V.  some are.

Jerry

You'll end up with 230V at 60Hz, giving a little more energy than you would otherwise but this is a typical application.

+1 carlsbad2

60 hz is better than 50, but 240V is better than 120. The best solution is to have electrician wire you 240 in your house and you will use best of the best.

The best solution is to have electrician wire you 240 in your house and you will use best of the best.

I doubt a credible licensed electrician will install a 240V branch circuit and 250V outlet to feed a 230V preamp.

2020 NEC 210.6 (A)

(A) Occupancy Limitation

In dwelling units and guest rooms or guest suites of hotels, motels, and similar occupancies, the voltage shall not exceed 120 volts, nominal, between conductors that supply the terminals of the following:

1. Luminaires
2. Cord-and-plug-connected loads 1440 volt-amperes, nominal, or less or less than ¹/₄ hp 60 hz

.

60 hz is better than 50

Cheaper to build 60Hz transformers than 50 Hz. 50Hz transformers will work fine on 60HZ mains power. No so for 60Hz transformers on 50Hz mains power.

240V is better than 120.

Watts are watts.

Formula for Power, PIE. I x E = P

P = power, watts, Va.

I = Amps

E= Voltage

Wire size can be smaller for 240V.

@jea48 in Europe, just as in the US, people say 220, 230, and 240 interchangeably.  240 is the most common voltage.  I hope electricians aren't getting a knot in their shorts over this nomenclature.

@jea48 let me know what else qualified electricians cannot do what can be routinely done.

Thanks for the responses. I can’t run a 220 line. I have a timber frame house and the outer walls are SIP panels which are solid. I was going to call the manufacturer today to ask about switching voltage but I didn’t have time. Likely just going to buy a step up transformer.