This 7 page technical catalog includes unique information and has clear mylar covers and is nicely bound. The enhancements, though designed for use with Allen MOS organs, can be used to drastically improve the sound of most organs. Harrison Organ Works is in the process of developing high quality original replacement boards for Allen early digital organs (including MOS computer boards! and the NAR capture board) at a reasonable price. We also have enhancement products that can make your organ sound like exotic cathedral pipe organs for a modest cost. When we complete our chapel organ (Allen 1800C) with all our enhancements (Traveling Wave Generators, DSP ambience processors, 7.1 surround sound system, etc) we will have sample sound files available. We can also blitz (replace all ICs and transistors and electrolytic caps) most of the Allen plug in boards for you. We even sell replacement clock board tuning slugs and tools. For more information call 303 841 5360 M-F 10am to 6pm Mountain time. Harrison Laboratories Inc. DBA Hlabs,  DBA Harrison Organ Works is not affiliated with Allen Organ Company and makes no claims as such. Harrison Organ Works engineers are intimately familiar with the Allen Mos 1 digital organ design and are very capable of developing high quality and reliable after market products for same. If you are an independent Allen organ repair company or individual we would be happy to sell or repair many of the original boards. We can also put new surrounds on the Allen 15" woofers with foam surrounds and encased midrange speakers.  The price for the printing and handling of this catalog is $5 which is credited towards any purchase you make at the time of sale or in the future up to 6 months. TO PAY BY CREDIT CARD EITHER PURCHASE FROM OUR ONLINE STORE AT store.hlabs.com OR CALL 303 841 5360 M-F 9AM TO 5PM MOUNTAIN TIME.