For Sale: Helix Dsp with Remote Controller German Maestro Headphones Bundled with Fiio E07K Headphone Amp BlackVue Dr500GW-HD Dash Cam SOLD Hosa XLR>RCA Adapters: 3 Male, 6 Female Condition of all items: Helix Dsp: Installed for a month or so. Works great. Used Very Little. I dropped a...