Step-Down Transformer 240v to 100v (for Japanese gear)

Very high quality step-down UK 240v transformers so you can use 100v equipment from Japan. UK or European plug on one side and Japanese socket on the other.

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Special Order Only

We have these in stock! If you are a Soundgas customer please get in touch and we will send over a custom order.

Unfortunately we cannot sell them to people who are not out customers (too much admin – sorry!).

More info about voltage & converters.


Very high quality step-down UK 240v transformers so you can use 100v equipment from Japan. UK or European plug on one side and Japanese socket on the other.

Available with UK or Euro plug and in four different output options from 50va to 500va (note that 50va is not available with the Euro plug).


USA 120v to UK version also available..

NOTE: As you can see we only supply these to our customers. If that’s you then get in touch and we will send over a custom order for what you need or add it to your invoice. Unfortunately we cannot supply these to other people, nor do we have time to answer questions. Read more about voltage and converters in our FAQ.

It is possible to power more than one piece of gear from the higher power units – we can supply a USA/Japan 6-way to plug into your transformer (contact us direct for these). Once again we can help with advice on this


More info about these converters:

We started supplying these UK-made Airlink transformers due to demand from our customers for high quality, reliable transformers to use with expensive, sensitive vintage music gear. Having had more than one piece of customers’ equipment fail to function correctly due to a poorly made, cheap Chinese transformer we set out to source the very best units we could find. These are not cheap, but you undoubtedly get what you pay for (and if you’ve just paid a lot of money for a prize vintage piece then this is a small price to pay for optimum performance and peace of mind).

We supply unit with a range of power outputs: 50vA, 100vA, 250vA or 500vA. Before purchasing you will need to check the power output of your gear (if you have bought the item from us we can obviously assist with this! The information is usually on the serial panel, or in the manual if you have it, otherwise you will need to go online. However if you have questions or concerns please get in touch before buying. In particular, choosing transformers for vintage amps needs to be done with care and leaving enough “headroom” in the output – get in touch if you need help (we’ve specialised in selling valve amps for many years so we have plenty of experience with dealing with their requirements).

The small 50vA unit will be powerful enough for many racks, synths and effects.

The 100vA and upwards are more heavy-duty pieces of kit. They are toroidal transformers suitable for professional studio applications.

Note that all the information about power consumption above is for guidance only. Please do your own research and ask us any questions you may have before plugging your pride and joy in for the first time.


Brand new product.


For sales in UK/EU the price will include 20% VAT. VAT-free sales are possible to businesses and individuals in the EU (outside the UK) with a valid VAT Number - please get in touch if you wish to buy this way.

Voltage Information



"Still in shock! Can not believe how good the seller is. This product was inspected, and shipped from the UK to the USA quicker than orders from my home state. Highly recommend these guys."

Thomas Tedesco

"When you are spending big money of vintage gear it's nice to have the confidence of impeccable service, sales and support... some of the best in the industry! Impeccable people, incredible equipment… my poor poor fiancé"

James DLR - Sofa Sound/Metalheadz

“I have bought two Moog synths from Soundgas over the past year, and I cannot say enough wonderful things about their selection of vintage products, the level of service, diligent responses to email, and expedient shipping with copious protective packaging. Soundgas is an impressive operation. My synths also sound amazing! These folks have made my vintage keyboard dreams come true in short order!”

J Yates

"Excellent equipment, wonderful service. I fully recommend Soundgas to anyone in the vintage gear market and I will definitely be a return customer. The gear itself was exactly as advertised and in great condition."

Hallam Kite

"Soundgas provided the absolutely top service in terms of item quality as well as service and communication. Shipping was fast, packing was top notch. These people deserve the best reputation they already have. Many many thanks, guys."

Dupille Luc

“If not a new language, then at least a very challenging, old dialect that will take me some time to assimilate. I’ve been waiting a long time for the challenge. Thank you @soundgasltd, she’s a beaut...and nobody prepares and packs like you fine folks.”

Justin Meldal-Johnsen

“I purchased a completely overhauled vintage valve Binson Echorec 2 T7E modified with varispeed, wet-only output, and a new paint job from Soundgas in early 2018. Tony and his team did an amazing job during every step of the purchase”

Matt Morton

“Imagine the perfect eBay.... with everything you never knew you wanted… and you can rest assured that your vintage and rare wobbly sound device will turn up on time and in one piece and possibly in even better condition that when it left the workshop. Soundgas - literally amazing."

Josh Lloyd-Watson & Tom McFarland - Jungle

"Just received my Roland RS 505 Paraphonic! Thanks so much - arrived very promptly, well packaged, in great condition and sounds amazing! Best seller."

Koko Hiras

“The perfect place to hear, learn about and then buy your most wanted piece of vintage music gear! I've not only managed to buy a rare piece of equipment I really wanted, but I have the guarantee it's been serviced, and I got it from people who are clearly passionate and knowledgeable about what they do, as well as super friendly and responsive by email. Thoroughly recommended!”

Colleen / Cécile Schott

“I’ve bought a number of items from Soundgas recently, and have been really impressed with their service. It takes the stress out of buying vintage gear to know it’s been properly (and faithfully) serviced or restored. Their after-sales service has also been exemplary. Highly recommended.”

David Wrench

“If you are a vintage audio gear head then this is the place you have been looking for all your life. Pretty much any piece of classic or obscure kit that you are after is available here... But the clincher for me is that the gear they sell has been restored by their top techs (unless otherwise noted) which is really very important when dealing with, for example, synths from 30 years ago.”

Lincoln Barrett / High Contrast

"Soundgas offer a great service, sourcing esoteric gear that works great."

Tom Rowlands - Chemical Brothers

“The Space Echo made its way to me - it looks and sounds beyond dreams, thanks guys for your great service and communication.”

Julius Bonson

"DREAM. COME. TRUE. My music has taken me around the world a few times...and if you are like me and absolutely adore vintage gear...Soundgas is the stuff of LEGENDS. It's the shop that people like us search for our whole lives- fantastic and rare selections, and the technical know-how to repair and or mod these vintage items to get them into shape to flow with your modern setup."

Tom Gossin

"Soundgas has an unbelievable selection of the cool, old stuff that’s hard to find. Tony knows his stuff and goes out of his way to make sure the transaction is a smooth one. Thanks guys!"

Tucker Martine - Flora Recording

"Finally, a company that tracks down all those brilliant curiosities that bring so much character and personality to a studio."

Matthew Herbert

"Packed with love and care. A stampede couldn't have crushed this thing. Works great and sounds like a dream. I love you Soundgas."

Ben Van Vlissingen

"The packing job to get it over to the US was superb, and the sound and performance of my Space Echo exceeds all of my expectations. I hope to do business with Soundgas again in the future. Many thanks!”

Rhett Daily


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Get in touch via the contact page. We know & love our gear and we want to ensure you get something that matches your needs (that, and we just like talking gear).

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