200 Watt Hercules Voltage and Frequency Converter

The Hercules Voltage and Frequency converter allows you to operate your equipment anywhere in the world. Hercules has been successfully used for:

  • Pro Audio systems up to 200 watts
  • Vintage audio such as Braun SK55
  • Model Railroad
  • Lower power appliances
  • Electronic production equipment
  • Miniature Laser Systems 200 watts or under
  • Rework stations up to 200 watts
  • International R&D Cooperatives


The 200 Watt Hercules voltage and frequency converter is completely universal output voltage (115V or 230V)  or output frequency (50Hz or 60Hz) from the front panel.  Output receptacle accepts power plugs from most regions of the world.

Relocating to another country?  Read our blog post!



Please see our shipping policy to estimate shipping time.  IF YOU NEED FASTER DELIVERY, PLEASE CONTACT US!  WE WILL FIND A WAY TO ACCELERATE YOUR DELIVERY AND GET YOU THE BEST POSSIBLE RATE.  For international customers, this policy also includes information on customs duties and charges.

Learn about Hercules amazing surge power capability!

The Hercules voltage and frequency converter is fully universal!  Will precisely convert worldwide mains voltage or frequency to what you need, with great accuracy, assuring rock-solid performance.  The output receptacle is universal.

Hercules will power devices up to 200 watts (instantaneous power over 300 watts available--please contact us).  Voltage AND frequency can be selected as needed, either 115V or 230V AC, at 50Hz or 60Hz, from anywhere in the world, regardless of frequency or voltage available locally. You can select the desired plug style to match your local outlet at checkout.   Output receptacle style accommodates most worldwide standards.

Why do you need a Hercules frequency converter? Devices with motors that turn or vibrate are very dependent on power line (mains) frequency to do their job properly and at the right speed.  Hercules has been used to power devices from vintage tube-based audio equipment to industrial manufacturing and rework gear.

Hercules also includes a remote programming port, if you need it.


Additional information

Weight 8.6 lbs
Dimensions 8.75 × 6.25 × 3.25 in
Output Voltage

Selectable 115V/230V AC

Frequency Accuracy


Frequencies Available

50Hz/60Hz Selectable

Voltage Accuracy

2% Regulated

Output Power


Remote Programmability


Output Plug

Universal 115/230V AC


Higher Power Audio Systems up to 200W, Production Test, Qualifying Designs

Power Cord (this plugs into your wall)

Australia | Type I, Israel | Type H, North America | Type B, South Africa | Type M, Type C (Europlug), UK | Type G (BS1363)

2 reviews for 200 Watt Hercules Voltage and Frequency Converter

  1. Jack K

    Hercules provided the power I needed. Thanks KCC S.

  2. Ken M

    Hercules provided great power

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Important Information and Warranty Terms

Prices are shown in U.S. Dollars (USD).

We make every attempt to provide information needed to choose the right product. We encourage you to contact us if in doubt. Restocking charge is 10% of product purchase price on most models. We do not pay return postage if you choose the wrong product.

Our 2-year warranty covers any defect which interferes with the product performing its function.  This includes the wall adapter provided with the unit.

We have warranty terms on our generous warranty to avoid our generosity being exploited. We do NOT warranty product that has been disassembled, tampered with, modified, dropped or abused. Our products are not experiment platforms and are not meant to be used for this purpose. You will pay replacement price if you modify or disassemble the product, damage it, then attempt to return it for warranty repair.

What our warranty does NOT cover:

  • Any unit which has been tampered with or altered voids warranty.
  • Return shipping is users responsibility.
  • If an improper wall adapter is used with the product, the resulting damage is not covered.

We strive to learn from any defective product. If a unit is modified or disassembled, this destroys the root cause traceability and an opportunity to improve product is lost.

On-line purchases are processed securely. Credit card purchasing is available through this system. Please contact us if you wish to purchase via some other means.

Minimum state sales tax of 2.9% plus municipality tax will be applied to residents of Colorado.