Soft start for mains transformers. No additional power required, compact size.
Muting and protection for power amps. Uniquely designed module to connect speakers to an amp after a few seconds, to avoid any pops or thumps. Also provides protection against DC without having to tap into the amp.
Easy mains switch. Can use a low power single gang switch to switch 12 amps live and neutral.
100 W PSU for amplifiers. Good performance and simplifies project assembly.
200 W PSU for amplifiers. A big brother to the 100 W PSU, can run a stereo or mono amp.
Regulated PSU for op-amp circuits. Stable and quiet +/-17V. Can be fed from a transformer or off the shelf AC plugtop.
High voltage differential regulated PSU for op-amp circuits. Useful when adding EQ etc. into amps - feeds off the amp DC supply.
DC Splitter for op-amp circuits. Use with the newly EU-recommended 'wall wart' SMPS AC-DC supplies to turn the single DC output into a split supply.
Balanced line i/o. High performance and elimination of ground loops whilst retaining earth integrity.
Pick-N-Mix Active Crossover. Select your combination of 2nd- and 4th-order filters, high- and low-pass, to build your ideal crossover. Also includes Linkwitz Transform and input and output stages.
2nd-order 2-way Subtractive Active Crossover. Fancy trying a transient perfect crossover?
Sub-woofer Controller. All you need for a nice simple sub-woofer.
Input Buffer & 2nd-order High Pass Filter. Use on its own to implement a 5th- or 6th-order bass alignment, or in conjunction with the Sub-woofer Controller.
Generates a negative rail of equal magnitude to the input. Can provide about 100mA. Allows you to keep 0V as real ground.
Class-A multi-purpose amplifier. Low power amp with voltage or current drive modes.
160 W n-channel MOSFET power amplifier. Designed to be compact, efficient and sweet sounding, to drive any loudspeaker.
Please check back occasionally as more projects will go live as well as new projects be added.
All content on this website Copyright © 2005-2017 Richard Read, unless otherwise stated. For commercial use please contact me.