Sustain & compression enhancers for all your tube amp projects. A subtle effect that alters the attack of notes.
Designed by Kevin O'Connor and supplied with the highest quality parts.
If you have questions about application or installation, please email us at amps@londonpower.com, or phone 807-473-0952 from 11am-6pm, M-F EST.

LIC - Technology Licence (per unit, for commercial builders and installers)
$5.00
NOTE: Installations and constructions using London Power kits are inherently licenced, and no add.....

SUS-2 - Sustain & Compression Enhancer for Cathode Bias
$12.00
The SUS-2 is suitable for cathode-biased amps. It can be used in single-ended or push-pull amplif.....

SUS-3 - Sustain & Compression Enhancer for Fixed Bias with Power Scaling
$12.00
The SUS-3 is specifically designed for fixed-biased amplifiers fitted with Power Scaling. The.....

SUS-1 - Sustain & Compression Enhancer for Fixed Bias
$38.00
SUS-1 is suitable for non-Power Scaled, fixed-bias amps. The signal envelope has three parts:.....
Product Categories
- Studio Gear
- All Books, Kits & Mods
- All Audio Design Books
- TUT Guitar Amp Books
- Hifi Design Books & DSN-1
- All Kits & Mods
- Power Scaling Kits
- Power Amp Kits
- Tube Preamp Kits
- Amp Mods
- PCBs for Tube Projects
- Power Supplies
- Channel Switchers
- Effects Loops
- Sustain Kits
- Building Supplies
- Hifi Design Downloads
- MI Design Downloads
- Technology Licencing
- Special Deals
Specials
- Studio Gear Ordering
- About Our Books
- Selecting a TUT Book
- Tube Amp Kits & More
- About Our Rack-Mount Chassis
- Hammond Chassis Applications
- Selecting a Preamp Kit
- About Our Switching Kits
- Selecting a Sag/Sustain Kit
- About Our Power Scaling Kits
- Selecting a Power Scaling Kit
- When Do You Need RBX Raw Bias Auxiliary Supply?
- LP Tech: Evolution to Revolution
- Standby Switches
- Tube Amp Kits & More
- Tube Amp FAQ
- Power Scaling Q&A
- Super Scaling Q&A
- Raw Bias Supply Issues & Mods
- Power Scaling vs. Variable Power
- PCBs vs. Hand-Wiring
- PCBs - Colour Considerations
- Tips on PCB Stuffing
- Effects Loop Truths
- Cathode-Bias/Fixed-Bias Switching in Tube Power Amplifiers
- Hammond Transformers for Tube Audio Amplifiers