Premium Only Content

EEVblog #837 - Reverse Engineering A Valve Headphone Amplifier
Dave reverse engineers the XuanZu X2-U808 Hi-Fi Headphone Amplifier to see if the valves actually do anything.
What is the circuit topology?
E180F (6J9) pentode valve datasheet: http://frank.pocnet.net/sheets/009/e/E180F.pdf
Doug Ford's Microphone design series: https://www.youtube.com/playlist?list=PLvOlSehNtuHv98KUcud260yJBRQngBKiw
Reverse Engineering How-To video: https://www.youtube.com/watch?v=lJVrTV_BeGg
Forum: http://www.eevblog.com/forum/blog/eevblog-837-reverse-engineering-a-valve-headphone-amplifier/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
EEVblog Amazon Store (Dave gets a cut):
http://astore.amazon.com/eevblogstore-20
T-Shirts: http://teespring.com/stores/eevblog
Donations:
http://www.eevblog.com/donations/
Projects:
http://www.eevblog.com/projects/
Electronics Info Wiki:
http://www.eevblog.com/wiki/
💗 Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3
-
49:33
EEVblog Channel
19 days ago $0.03 earnedEEVblog 1699 - µTimer PROJECT Part 1 - The LCD
703 -
15:13
EEVblog Channel
6 years agoEEVblog #1144 - Padauk Programmer Reverse Engineering
22 -
28:59
EEVblog Channel
3 years agoEEVblog 1415 - Reverse Engineering the DP10007 Differential Probe
20 -
3:36
The Chris Voss Show Podcast
3 years agoTHX Onyx Portable DAC Headphone Amplifier Review
91 -
11:44
EEVblog Channel
5 years agoEEVblog #138 - Top 5 Engineering Graduate Tips
24 -
3:28
CoastalConsultingAgency
3 years agoPinterest Marketing Video Course - Module 8: Reverse Engineering Hack
37 -
29:58
EEVblog Channel
6 years agoEEVblog #1164 - Xbox Engineering Baptism Of Fire
14 -
47:44
EEVblog Channel
5 years ago $0.01 earnedEEVblog #1326 - How Engineering Minds Think Alike
39 -
10:00
MTandiZ
4 years agoUltra-Compact 4 Channel Stereo Headphone Speaker Amplifier Splutter
33 -
LIVE
The Mel K Show
4 hours agoMel K & Patrick Byrne | Deep Rig Exposed: Tracking Election Fraud's Global Tentacles | 8-21-25
649 watching