Topping D90 III Discrete 1-bit Fully-balanced DAC. What’s old is New! What is he on about?

The Topping D90 III Discrete utilizes a very modern take on an old school technology. Remember "Bitstream?" It's back in the D90 Discrete. I go into it a bit in the video. • Albums used in this review: • Holly Cole, “Don’t Smoke in Bed”: https://tidal.com/browse/album/1556956?u • Steve Morse, "Split Decision" : https://tidal.com/browse/album/5525056?u Apos Audio Topping D90 III Discrete link: https://apos.audio/collections/brand-spotlight-topping/products/topping-d90-iii-discrete-1-bit-fully-balanced-desktop-dac?sca_ref=7308241.j5jMh2ymfF All of my reviews are completely subjective. I do not accept payment for reviews. If you wish to join the channel and become a member please click here: https://www.youtube.com/@OldGuyHifi/membership *DISCLOSURE: Some of the links below contain affiliate Amazon links. If you purchase with those links, I do receive a small commission but, it doesn't affect your price or your ability to return something. Thank you. Amplifiers: • Black Ice Audio F22 KT88 Integrated Tube Amp: https://blackiceaudio.com/integrated-amplifers-1/p/black-ice-fusion-f22v2-tubeintegrated • Advance Paris A7: https://shop.skylabsaudio.com?sca_ref=6609663.MTejnTqC6497 • Cambridge EVO150: https://shop.skylabsaudio.com?sca_ref=6609663.MTejnTqC6497 Speakers: • Wharfedale Diamond 12.4 Speakers: https://amzn.to/3WberDp • Opera Callas Speakers: http://operaloudspeakers.com/en/collections/callas-line/callas.html • Elac Debut Reference 62 (DBR62) speakers: https://amzn.to/3VyQzcu • Elac Debut 3.0 DB 52-BK: https://amzn.to/4hjyKYC DACs: • LAIV Harmony R2R DAC: https://www.laiv.audio/harmony-dac • LAIV Harmony μDDC: https://www.laiv.audio/harmony-uddc • Geshelli Labs Dayzee: https://geshelli.com/dayzee/ • Sparkos Pro Discrete Op Amp SS2590: https://sparkoslabs.com/product/pro-discrete-op-amp-ss2590/ • FiiO PL50 Linear Power Supply: https://www.fiio.com/pl50 • SMSL PO100 PRO DDC/Reclocker:https://amzn.to/3WHbBqS Streamers: • Audirvana is my primary streaming platform. You can get a 30 day free trial here: https://audirvana.com/try/ • Cambridge MXN10: https://shop.skylabsaudio.com?sca_ref=6609663.MTejnTqC6497 • FiiO S15 Streamer DAC: https://www.fiio.com/s15 • Alpha Audio, Alpha One Streamer DAC: https://www.alphaaudiocanada.com/#programs • WiiM Mini: https://amzn.to/4aJVcrp Analog: • Fluance RT-84 turntable: https://amzn.to/4aMuZrt. • IsoAcoustics zaZen Series Isolation Platform: https://amzn.to/4aFbQsc • Audio Technica AT540ML MM Cart: https://amzn.to/4diAyzy • Audio Technica AT-OC9XEN MC Cart: https://amzn.to/3C0PCna • Boyuusound NC-25C Step-Up Transformer: https://amzn.to/4jpS8F3 • Stack Audio (Spindle) Serene Stabiliser: https://stackaudio.co.uk/product/serene-stabiliser/ • Stack Audio Serene Record Mat: https://stackaudio.co.uk/product/serene-record-mat/ Accessories/Cables: • IsoAcoustics Gaia Series III Speakers & Subwoofer Isolation feet: https://amzn.to/3PXLxEn • IsoAcoustics Gaia Series II Speakers & Subwoofer Isolation feet: https://amzn.to/4aIrfbm • IsoAcoustics Iso-Puck Series Acoustic Isolators: https://amzn.to/4aFLeY2 • All Line Level, Speaker & Mains cables are from Wire World: https://wireworldcable.com/ • Stack Audio AUVA Equipment Isolators: https://stackaudio.co.uk/product/auva-equipment-isolator/ Basement desktop gear: • FiiO K17 Desktop Headphone Amp/DAC *Not yet for sale* • Philharmonic True Mini Monitors: https://philharmonicaudio.com/products/true-mini?variant=44391547764980 • Sound Solver, Large Desktop HiFi Audio Rack: https://sound-solver.com/products/desktop-hifi-audio-rack-large-standard-height Editing desktop gear: • Douk A5 Amp: https://amzn.to/3WK8Ftz • Sound Solver Medium Desktop HiFi Audio Rack: https://sound-solver.com/products/desktop-hifi-audio-rack-medium-standard-height Headphones: • FiiO FT-1 Closed-Back Over-Ear Wired Hi-Fi Headphones: https://amzn.to/3B2gvqC • FiiO FT-5 Planar Magnetic Over-Ear Wired Hi-Fi Headphones: https://amzn.to/4e6zG09 Email: [email protected] Community Post Playlists: https://www.youtube.com/post/UgkxFWsrQVhpupMc-WdqrP_X4ZtMXiQmVz1q Tidal Playlists: • Old Guy Hifi Test Tracks Vol. 1: https://tidal.com/browse/playlist/504b4da9-38d5-4f3b-83ea-6d3e73fb90bf • Old Guy Hifi Test Tracks Vol. 2: https://tidal.com/browse/playlist/3cf20a05-c649-474d-aa32-72c710212b59 00:00 13:00 Holy Cole 14:38 Steve Morse 17:11 Summary