New BLOCK AUDIO C-LOCK Power Connection Guard

The new BLOCK AUDIO C-LOCK® Power Connection Guard accessory is the simple, yet unique solution to secure and protect the use of AfterMarket Power Cables. A product of the accessories division of BLOCK AUDIO, a High-End electronics manufacturer in the Czech Republic, the three-model C-LOCK series was designed to remedy a widespread problem.

Many of today’s High-End audio components claim to reach for perfection. However, with power cable connection, “perfectionism” usually ends…

But in fact, everything begins right here — as your components and/or Power Conditioner are supplied with essential energy through this connection! Therefore, this connection must be maintained absolutely secure.

And more than this: Reliably free of vibrations, resonances and movements causing short transients…

In the real world of High-End Audio, most AfterMarket power cables are usually very heavy and inflexible. Your standard wall power outlet isn’t intended for such heavy loads. Consequently, the contacts in the standard wall sockets are very overloaded, bent and can even be broken.

This is hardly perfection — nor fully realizing the benefits.

BLOCK AUDIO’s C-LOCK series of product are designed to enable the consumer to meet these goals:
  • Stabilizes and guarantees a perfectly connected power cable.
  • Ensures an uninterrupted, stable supply of power.
  • Safeguards your expensive audio equipment from damage caused through poor mains connection.
  • Ideal for Power Conditioners using AfterMarket High-End power cables, as well as all types of audio components.
  • Enhances audio performance and your musical listening pleasure.
  • Is an absolutely meaningful, and not overly-expensive completion of your entire audio system chain.

The C-LOCK series consists of three models: entry-level C-LOCK Lite, the more fully-featured step-up SE and the high performance SE² for use with Furutech and similar upgrades. They are available in both US/Nema and EU/Schuko configurations.

These two short videos show how the C-LOCK Lite and SE² are easily installed — and benefit your audio system.

Selecting the Right C-LOCK

NOTE: The C-LOCK Upgrade Kit (without power socket) works with standard (rounded) single/duplex power sockets (left, below) or your choice of any compatible, upgraded power socket, including Furutech — not with incompatible, for example: “Decora” duplex power sockets (right, below), which requires C-LOCK Kit with standard 20-Amp Power Socket, or with Furutech (in SE² version).

A complete Sales/Price Sheet for US/Nema models can be found at: For EU/Schuko models: On Page 2 is a complete chart of upgrade features between the three models.
The C-LOCK website for information & purchasing is at There is a US$19 shipping & handling charge per model. Delivery is via FedEx/UPS.