The OA21 Legacy is the grandson of the Classic original OA21 from 1984. Just type in OA21 into google to see how famous it is . The legacy DNA is pure original classic ONIX OA21. We have at last sourced the required methods of making it the way it needs to me made for pure sound.  Its a new design with a completely new BOARD, the transformer is 50% bigger than of old , and a new design with the power upgraded  to 100W RMS both channels driven . It has all the features of the original OA21 but with 2025 specs . Check out the OA21 Legacy Specs on our site under products . The get ready for some mind blowing audio .  https://www.onix-audio.com/onix-oa21-specification