The Douk Audio A5 is a really great unit especially for $99.00. Douk designed the unit so it is super easy to roll op-amps if you wish. And you should. I had great luck doing so. The unit's sound improved a lot depending on the chosen op-amp.
Douk Audio A5 2 Channel TPA3255 Stereo Amp: https://amzn.to/4jFu9BJ
4 Pieces IC Chip Removal Tool: https://amzn.to/3CJ2OxM
Tidal Playlist used in this review: https://tidal.com/browse/playlist/6e1fb2c5-775d-4951-ac39-5ffd72d31d3b
All of my reviews are completely subjective. They are my opinion and not to be taken as criticism or as negative. I can only share my feelings and personal conclusions. No one has any influence over my reviews or conclusions. I do not accept payment for reviews.
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*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 for supporting the channel.
Current audio equipment list:
Amplifiers:
• Cambridge AXR-100 Receiver: https://shop.skylabsaudio.com?sca_ref=6609663.MTejnTqC6497
• Cambridge EVO150: https://shop.skylabsaudio.com?sca_ref=6609663.MTejnTqC6497
• Black Ice Audio F22 KT88 Integrated Tube Amp: https://blackiceaudio.com/integrated-amplifers-1/p/black-ice-fusion-f22v2-tubeintegrated
DACs:
• LAIV Harmony R2R DAC: https://www.laiv.audio/harmony-dac
• LAIV Harmony μDDC: https://www.laiv.audio/harmony-uddc
• Geshelli Labs J2S Socketed AKM4499 DAC: https://geshelli.com/product/jnog2-socketed-j2s/
• Sparkos Dual Discrete Op Amp SS3602: https://sparkoslabs.com/product/dual-discrete-op-amp-ss3602/
• Geshelli Labs Dayzee: https://geshelli.com/dayzee/
• Sparkos Pro Discrete Op Amp SS2590: https://sparkoslabs.com/product/pro-discrete-op-amp-ss2590/
Speakers:
• Wharfedale Diamond 12.4 Speakers: https://amzn.to/3WberDp
• Elac Debut Reference 62 (DBR62) speakers: https://amzn.to/3VyQzcu
• Opera Callas Speakers: http://operaloudspeakers.com/en/collections/callas-line/callas.html
Streamers:
• My main streaming source is a small format PC: https://amzn.to/3yhCoAI
• Cambridge MXN10: https://amzn.to/3XEWkb1
• FiiO S15 Streamer DAC: https://www.fiio.com/s15
• Alpha Audio, Alpha One Streamer DAC: https://www.alphaaudiocanada.com/#programs
Analog:
• Fluance RT-84 turntable: https://amzn.to/4aMuZrt.
• 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
Accessories:
• iFi AC iPurifier: https://amzn.to/3UWb4ko
• All line level cables are from World’s Best Cable. I primarily use Mogami 2964 Wire and Amphenol ACPL connectors: https://amzn.to/3JWCDE9
My main desktop gear:
• FiiO K9AKM Desktop Headphone Amp/DAC - AKM Edition: https://amzn.to/3ZeGTYp
• AIYIMA A70 Mono Amplifier (2): https://amzn.to/4fYMPt0
• Sound Solver, Large Desktop HiFi Audio Rack: https://sound-solver.com/products/desktop-hifi-audio-rack-large-standard-height
Upstairs desktop gear:
• HIFIMAN EF400 Balanced Headphone DAC/Amplifier: https://amzn.to/3CaUwP5
• Ayima A07 amp: https://amzn.to/3V969LQ
• Sound Solver Medium Desktop HiFi Audio Rack: https://sound-solver.com/products/desktop-hifi-audio-rack-medium-standard-height
Headphones:
• Sennheiser Mass-Drop HD6XX headphones: https://amzn.to/3wVNvz7
• 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
• HIFIMAN Deva-Pro Over-Ear Full-Size Open-Back Planar Magnetic Headphone with Bluetooth Dongle/Receiver, Himalaya R2R Architecture DAC: https://amzn.to/3C2Vtsu
Email: questions4oldguyhifi@gmail.com
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
• My Classical playlist: https://tidal.com/browse/playlist/8e588a95-7664-4f5a-97c1-70270655e40c
Spotify:
• Classical Weekend: https://open.spotify.com/playlist/648pMGies9cVEsUqEWEiNE?si=64a61b584d9b43c3
Qobuz playlist:
• "Audiophile Electronica": https://open.qobuz.com/playlist/20718243
• "Vivaldi": https://open.qobuz.com/playlist/15233981