I just tried using coupon code PA880088 at checkout on the Penon site and no discount occurred. ???
EDIT: This was the error message:
Coupon "pa880088" does not exist!
Headphones/IEMs : ZMF Ori, Aeolus, Eikon, VC, AC; LCD-3 (non-fazor), HiFiMan Sundara, MassDrop HD6xx, ATH-AD900, Oriolus Isabellae, Penon Serial Headphone Amps: Violectric v280, Monoprice Liquid Platinum, FiiO E10K Source/Stream Inventory: Small Green Computer (SMG) i5 Transport, Sonore OpticalRendu (Roon only) Shanling M6 (21) Pro Cable Inventory : Forza AudioWorks: Claire HPC Mk2, Noir Hybrid & HPC Mk2; Amplifier Surgery, Rega Reference Mains Power cord, Audience Forte F3 PowerChord, Audience Powerchord; DNM Stereo Solid Core Resolution Speaker cable, DNM Stereo Interconnect VERSION 3 cable with In-Plug HFTNs; Penon Totem adapter,TRANSPARENT Premium Digital Link Coaxial 75ohm Power-related Components : PS Audio Stellar PowerPlant 3, AudioQuest Niagara 1200 Amps : Rega Elicit-R, Sugden A21a, Schiit Jotenheim 2 DAC : Denafrips Ares II Speakers : Chartwell Graham LS6, Harbeth P3ESR