[bahamot]

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

 

[Relaxasaurus]

Nice LCD display. Is there an EQ built into this thing?

Edit- nvm I see that you're discussing the amp

 

[bahamot]

Nice LCD display. Is there an EQ built into this thing?

Edit- nvm I see that you're discussing the amp

The one below the amp is Topping D90, no EQ.

 

[XERO1]

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....

 

[rmsanger]

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

 

[Voxata]

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

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

 

[rmsanger]

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

A member of ASR was on the design team and confirmed it to be in the 400-500 range:
https://www.audiosciencereview.com/...a90-headphone-amp-prototype.11946/post-360734

 

[Voxata]

400 would make it competitive

 

[rurika]

$500 confirmed. APOS ready to take a pre-order.
At this price. I wouldn't buy it either.

 

[rmsanger]

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.

 

[DenverW]

Really curious to hear some reviews. I'm worried that it measures amazingly and sounds....alright.

 

[Muataz]

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.

 

[hkpants]

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

 

[rmsanger]

"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.

 

[XERO1]

Today they lunch it.

Mmmm.... Lunch....