#AvantgardeAcoustics Duo Mezzo XD horns and #ThomasMayer tube electronics. pic.twitter.com/op8jZdvJ3q — Bernard Žvokelj (Berny2876) March 14, 2019 — Elesorca (@elesorca) March 14, 2019
#AvantgardeAcoustics Duo Mezzo XD horns and #ThomasMayer tube electronics. pic.twitter.com/op8jZdvJ3q — Bernard Žvokelj (Berny2876) March 14, 2019
