Topping A90
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bahamot

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Announcement:
https://www.facebook.com/2495577743786403/posts/3098350043509167/
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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

Internal photo from: https://www.audiosciencereview.com/...-headphone-amplifier-review.13592/post-410653
 
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XERO1

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I'll admit I'm not a big fan of the SQ of the THX-AAA based amps, or op-amp-only amps in general, and I doubt the A90 will do anything to change my mind.

But I always try to keep an open mind (and ears) when auditioning new gear, so who knows.

But after seeing the ASR preview, I'm sure all the Measurement Phreaks are like....

2e5qbgntvyfz.gif
 
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rmsanger

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Really interested in the following combos:

SMSL SP200 ($300) -> SMSL M400 (~$600)
Topping A90 (~$500) -> Topping D90 ($700)
Drop THX 789 ($300) -> Gustard DAC-X22 ($1000)

Sabaj D5 DAC & Amp ~ $400
 
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Voxata

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I'll be honest I wouldn't by the A90 @ $500.

*Edit* it's good enough to buy... Guess I'm eating my words!
 
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rmsanger

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Voxata

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400 would make it competitive
 
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rmsanger

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Yep both the Topping D90 and SMSL M400 are priced too high for what they are. I'll look for them is the $200 price range on headfi in ~18-24 months.
 
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hkpants

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Very tempted to buy a topping D/A90 stack since I'm looking to expand into headphones.
 
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rmsanger

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"The lowest distortion AMP ever built. Even APx555 couldn't measure it."

After I read that I think that just means the difference is in-perceptible to the human ear thus the marginal increments in this & from here out means nothing.
 
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