Fosi Audio GR70 Tube Headphone Amp - The New Audiophiles' First Tube Amp?

Thanks to Fosi Audio for sending the GR70 for review! Buy from Amazon (affiliate link): https://amzn.to/49rmF0Y Buy from Fosi Audio: https://fosiaudio.com/products/gr70-t... Want to support the channel? Consider becoming a member! Or you can join my Patreon here:   / wavetheory1   Or make a 1-time donation through PayPal here: https://www.paypal.com/donate/?hosted... Test Gear... All music was digital and either lossless/hi-rez FLAC or DSD played locally, or in the case of FLAC also streamed from Qobuz, all through Roon. Chain 1... FiiO SR11 (   • Fiio SR11 Audio Streamer - The Breakthroug...  ) into Fosi ZH3 (review coming!) into GR70 Chain 2... Chord 2Go+2Yu (   • Chord 2Go Streamer + 2Yu DDC Review - Cut ...  ) into Ferrum WANDLA GSE (review coming!) into Ferrum Oor (   • Oor Else! Ferrum Oor Headphone Amp RE-Revi...  ) then single-ended preout into GR70 Chain 3... FiiO SR11 into Schiit Mimir (   • Schiit Mimir DAC + Forkbeard Review - Has ...  ) into GR70 - GR70's preout also went into Ferrum Oor from this chain. Compared Amp... Apos Gremlin:    • Apos x Community Gremlin Headphone Amp Rev...   Headphones Used... HEDD D1:    • HEDD's First Dynamic Driver Headphone Has ...   HiFiMan Ananda Unveiled (review coming!) Massdrop + Sennheiser HD6XX:    • What Gear Is My Gear Part 8: Massdrop + Se...   PSVane Horizon Tubes... My Review:    • PSVane Horizon Series Vacuum Tubes Review ...   Amazon Link (affiliate link): https://amzn.to/456tGTH Timestamps... 00:00 Intro, Pricing, Disclaimer 02:21 Shameless Self Promotion 02:48 About the GR70 06:19 Build, Features, Specs, Ergonomics 15:43 Test Gear & Sound 27:51 Comparison with Apos Gremlin