bahamot
1000+ Head-Fier
- Joined
- Sep 17, 2005
- Posts
- 1,069
- Likes
- 899
Announcement:
https://www.facebook.com/2495577743786403/posts/3098350043509167/



Measurement:
https://www.audiosciencereview.com/...of-topping-a90-headphone-amp-prototype.11946/
https://audiosciencereview.com/forum/index.php?threads/topping-a90-headphone-amplifier-review.13592/
Known spec so far (from measurement thread):
- 250mw@UNBAL
- 0.135Ohm BAL
- 0.06Ohm SE
- SMPS power supply (2x Meanwell IMR 20-15)
- Composite + feedback topology
Full spec:

Internal photo from: https://www.audiosciencereview.com/...-headphone-amplifier-review.13592/post-410653
https://www.facebook.com/2495577743786403/posts/3098350043509167/



Measurement:
https://www.audiosciencereview.com/...of-topping-a90-headphone-amp-prototype.11946/
https://audiosciencereview.com/forum/index.php?threads/topping-a90-headphone-amplifier-review.13592/
Known spec so far (from measurement thread):
- 250mw@UNBAL
- 0.135Ohm BAL
- 0.06Ohm SE
- SMPS power supply (2x Meanwell IMR 20-15)
- Composite + feedback topology
Full spec:

Internal photo from: https://www.audiosciencereview.com/...-headphone-amplifier-review.13592/post-410653
Last edited: