; 27 years ago 1989 founder andrew barta headquarters new york city new york u.s. area served worldwide products effect pedals amps and di boxes website tech 21 website tech 21 is a new york based manufacturer of guitar and bass effect pedals amps and di boxes which allow the user to emulate the tone of many popular guitar amps and record those sounds directly into a mixer . products edit sansamp tech 21 s core product the sansamp was designed by andrew barta and introduced in 1989 . although other companies have manufactured multi effect units the sansamp was unique in that it introduced the concept of amp modeling that is altering guitar sound to emulate different amplifiers and allowed recording direct to a mixing console . other tech 21 products have included distortion pedals tech 21 xxl american woman etc. and bass specific pedals rack mount units rbi preamp for bass psa 1 preamp for guitar as well as a range of amplifiers trademark 30 60 120 combos landmark heads that use sansamp technology built in . while being the precursor to digital amp modeling technology tech 21 has continued to use only analog technology rather than digital signal processing as the driving force behind its tones . external links edit tech 21 website sos interview with andrew barta namm oral history interview with andrew barta founder january 14 2009 namm oral history interview with dale krevens v.p. january 25 2015 this article relating to guitars is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title tech 21 & oldid 737304754 categories guitar amplifier manufacturersmusic equipment manufacturersguitar effects manufacturing companiesguitar stubshidden categories all stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 1 september 2016 at 23 02 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view