INTRODUCTION
THANK YOU
Thank you for using the PAL Plus MkIII and thereby making it a part of your art. The PAL Plus
MkIII is the third generation of our PAL platform, now in it’s 13th year of production (2011).
The original PAL (Preamp And Limiter) was introduced in 1998. and was based on a combina-
tion of our original Y7 microphone preamplifier and our L1 optical limiter. Within a year, the
PAL was outselling all four versions of the Y7 and L1 combined. For us, this established the
PAL as a permanent platform for continued development and refinement.
After seven years of production (2005), the PAL & PAL Plus evolved to become the PAL Plus
MkIII and represents what a truly modern, multi-function, audio processor can be.
Components and construction are the highest quality seen in the audio industry today. Each
unit is point-to-point hand-wired to solid Teflon terminal strips and oxygen free copper post.
All audio transformers are based on classic designs, upgraded wherever appropriate, and made
to our specifications. High-grade polypropylene capacitors are used exclusively in the signal
path. Polypropylene caps are also used for B+ filtering, making Requisite the only pro audio
products that do not use electrolytic caps for filtering in their main frames. Allen-Bradley car-
bon composition resistors, gold switches, gold and ceramic tube sockets and special audio wire
are all selected for their tonal character and reliability. This design approach has yielded charac-
teristics that include wide bandwidth, low noise, low distortion, reliability and truly high fidel-
ity performance making the PAL+ MkIII a “must have” for any rack.
The PAL Plus MkIII is available with a choice of two, outboard power supplies. The OPS-2D is
a high-grade, high-capacity solid-state power supply, capable of supplying up to two PAL Plus
MkIII main frames for mono or stereo operation. The RTS-4A is a tube rectified, 4-space, rack
mounted power supply. Filtering is a choke input to oil/poly filter caps and each channel is in-
dividually tube regulated. The RTS-4A is expandable from 1 to 4 channels and is designed for
the ultimate in high-fidelity audio performance.
Please read this manual carefully as it contains information essential to the proper operation of
the unit. We welcome your comments and encourage you to write or call.
Thank you again, and please enjoy!
Danny “Sage” McKinney (Founder/President)
Requisite Audio Engineering
818.437.0779
THE PAL PLUS MKIII
R e q u i s i t e A u d i o E n g i n e e r i n g! L2M MkIII
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