When Eric Earley isn’t fronting indie-rock darlings Blitzen Trapper, he’s been spending his days working full-time at a homeless shelter in Portland, Oregon, a job he’s held since 2018.

With the HD620S, every nuance of Cassidy’s voice is conveyed by the Zen Can 3. There’s a delicacy here that’s so engaging and emotional. Music can do that to you and this device can turn ...