About F.A.T. Power Scale TM :

Fat and Power Scale

Fat:
Feedback attenuation. Determines how much gain and body the power amp produces.

Power Scale:
Each channel has its own Power Scale control. This is the London Power “Dual Power Scale” feature, which allows each channel to have complete control over power amp saturation. Set channel A “clean channel” for punchy clear tone with maximum headroom, and channel B “distortion channel” can be set for high power tube compression at a usable wattage. It’s like having two completely different power amps built into a single amp!

Power Scaling TM

Power Scaling is proprietary technology developed by Kevin O'Connor at London Power. I consider Power Scaling to be the ultimate tube amplifier master volume, and that is why it is incorporated into every Stephenson amplifier.

Many guitarists have difficulty with the loud volumes involved in getting a great tone from a tube amp. Tube amps generally sound best when the power section is pushed into clipping or at least to its compression point. Both effects happen at high volumes. Power Scaling allows the output of an amplifier to be infinitely variable from full wattage down to a fraction of a watt, allowing for cranked amp tone at any volume. Power Scaling maintains the amp's true sound at easy-to-manage volumes. There is no coloration or loss of feel. A Power Scaled amp simply sounds just as good at low-wattage settings as it does at high-wattage settings.

Power Scaling also offers these additional benefits:

  1. Longer power tube life at any setting below maximum wattage
  2. Soft start for tubes and filter caps in power amp section, by following these steps:
      • Turn Power Scale to minimum
      • Switch on the power
      • Wait one minute, then slowly turn up the Power Scale control
  3. Over-current protection in the event of component failure
  4. You can form new capacitors using the procedure in (2) above, slowly turning the Power Scale control up towards maximum over a period of one-half hour to an hour
  5. Extension of speaker life
  6. Great tone on stage despite how quiet the sound man wants you to be
  7. Protection of your hearing so you can enjoy great guitar tone your entire life!

Contact Info :

STEPHENSON AMPLIFICATION

Mark Stephenson
PO Box 176
Parksville, BC
CANADA
V9P 2G4

Tel: 250-954-2292
Monday to Friday 10:00 AM - 6:00 PM Pacific

stephenson@telus.net