• We offer a service modifying valve guitar amplifiers to improve reliability and bring out the amplifiers full potential to give great tone to suit the player's style.

• We specialise in fitting Power Scaling™ to almost any valve amplifier to allow pre-amp and output tube break-up and distortion at  low volumes using circuits and techniques developed by London Power.  
• If you have to play smaller venues, play at home or need to mic up your amp and want to get the overdrive tones you get at high volumes, Power Scaling™ is the answer.
  see the Power Scaling™ FAQ's

• We are agents for the exceptional hand made "ME Guitars" Carbon Fibre Guitars.

• We can modify your amp or supply a modified amp. 

• We also supply mod kits and supply Hammond Output transformers.

• Epiphone® Valve Junior
• Orange Tiny Terror
• Harley Benton™ and Grainger
• Fender® Champ 600
• Fender Champ Master Volume kit with Gain and NFB switches
• Fender® Blues Junior
• Blackheart BH5®
• Blackheart BH1®
• VOX AC4TV®
• Marshall JMP50 Master Mk2 Lead
• Marshall JCM2000 DSL201
• Power Scaling™ Kit
• Hammond Output Transformers

• Master Volume
• Power Scaling™ (see the Power Scaling page and FAQ's)
• Bias adjustment pots and measurement points
• Tone Controls
• Tone Stack mods
• Voicing
• Gain Switch
• Standby Switch
• HT Fuse
• Line Out jack
• HT Voltages corrected
• Hum reduction
• Heaters converted to DC
• Input jack mods
• Specific harp amp mods
• Input to suit acoustic piezo pickups
• Ground improvements
• Output Impedance selector
• Upgraded speakers
• Headphone jacks
• Presence controls
• Negative Feedback circuits
• Triode/Pentode mode switching
• 'Fat' switch
• Bright switch

"Power Scaling
not only works, it works really well.

Both amps instantly
sounded smoother and more
dynamic at any volume level.
Remarkably this was
maintained from full power to
zero output."