bahamot
500+ Head-Fier
- Joined
- Sep 17, 2005
- Posts
- 896
- Likes
- 550
Announcement:
https://www.facebook.com/2495577743786403/posts/3098350043509167/
![FB_IMG_1583754499700.jpg FB_IMG_1583754499700.jpg](https://cdn.head-fi.org/a/11198701_thumb.jpg)
![Rear.jpg Rear.jpg](https://cdn.head-fi.org/a/11198702_thumb.jpg)
![TIM图片20200525200058.jpg TIM图片20200525200058.jpg](https://cdn.head-fi.org/a/11242329_thumb.jpg)
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:
![2969726.jpg 2969726.jpg](https://cdn.head-fi.org/a/11257658_thumb.jpg)
Internal photo from: https://www.audiosciencereview.com/...-headphone-amplifier-review.13592/post-410653
https://www.facebook.com/2495577743786403/posts/3098350043509167/
![FB_IMG_1583754499700.jpg FB_IMG_1583754499700.jpg](https://cdn.head-fi.org/a/11198701_thumb.jpg)
![Rear.jpg Rear.jpg](https://cdn.head-fi.org/a/11198702_thumb.jpg)
![TIM图片20200525200058.jpg TIM图片20200525200058.jpg](https://cdn.head-fi.org/a/11242329_thumb.jpg)
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:
![2969726.jpg 2969726.jpg](https://cdn.head-fi.org/a/11257658_thumb.jpg)
Internal photo from: https://www.audiosciencereview.com/...-headphone-amplifier-review.13592/post-410653
Last edited: