Topping A90
Mar 9, 2020 at 7:48 AM Thread Starter Post #1 of 1,332

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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Mar 10, 2020 at 7:24 PM Post #4 of 1,332

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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Apr 29, 2020 at 8:51 PM Post #5 of 1,332

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
 
Apr 30, 2020 at 5:40 PM Post #6 of 1,332

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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Apr 30, 2020 at 6:39 PM Post #7 of 1,332

rmsanger

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Apr 30, 2020 at 7:39 PM Post #8 of 1,332

Voxata

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400 would make it competitive
 
May 17, 2020 at 1:38 PM Post #10 of 1,332

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.
 
May 17, 2020 at 11:28 PM Post #11 of 1,332

DenverW

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Really curious to hear some reviews. I'm worried that it measures amazingly and sounds....alright.
 
May 18, 2020 at 4:14 AM Post #12 of 1,332

Muataz

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Today they lunch it.

The lowest distortion AMP ever built. Even APx555 couldn't measure it. And it is new design not like other THX.
 
May 18, 2020 at 10:53 AM Post #14 of 1,332

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.
 
May 18, 2020 at 2:34 PM Post #15 of 1,332

XERO1

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