The introduction of "modular units" is not a new concept but recently there has been a gradual standardizing of unit sizes with different manufacturers working to the same specifications.  As a result, units are now interchangeable from one manufacturer's PSU to another.  The A-Designs range of 6 modules - all original designs - are fully compatible with the API 500 series "Lunchbox" modular rack frame and power supply, also those from Brent Averill and OSA.

As this format is becoming so popular, API has formed a confederation of manufacturers called the VPR Alliance, who's products are approved by API for fitting into the Lunchbox.  A-Designs is of course among them.

The P-1 is inspired by the highly successful Pacifica microphone pre-amplifier, and captures the unique sound of the 1970's Quad Eight Ventura, Coronado and Pacifica Consoles.  It includes the following features: Pad, phase reverse, 48v phantom power, ¼" direct inject "High Z" for instruments, cream coloured face plate, red LED indicator for phantom power, aluminum cast red knob, custom wound input and output transformers, and thumb screws for easy install.