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Topping A90 Discrete Review (Headphone Amp & Preamp)

Rate this Headphone Amp/Pre-amp

  • 1. Poor (headless panther)

    Votes: 9 3.1%
  • 2. Not terrible (postman panther)

    Votes: 9 3.1%
  • 3. Fine (happy panther)

    Votes: 50 17.3%
  • 4. Great (golfing panther)

    Votes: 221 76.5%

  • Total voters
    289

enricoclaudio

Senior Member
Manufacturer
Joined
Jan 7, 2021
Messages
488
Likes
757

Snoopy

Addicted to Fun and Learning
Joined
Jul 19, 2021
Messages
664
Likes
342
Just got my A90D delivered. It came with Firmware 2.3 already and after connecting it to my Mac Studio with a USB-C to USB-A cable, the firmware drive came up on my desktop immediately. Sound is as good as my A90. Can't really hear any difference with my Sennheiser 660s or with my Sundaras. I have it set it up in High gain and volume at 65 is plenty loud for me. This is really the perfect companion for my Matrix Audio X-SABRE 3 ;)

View attachment 222324
Isnt the sabre3 and the A90D a bit overkill for these headphones or do U have other headphones as well?
 

enricoclaudio

Senior Member
Manufacturer
Joined
Jan 7, 2021
Messages
488
Likes
757
Isnt the sabre3 and the A90D a bit overkill for these headphones or do U have other headphones as well?

Overkill? Not because I own a $3000 DAC/Streamer that means I need to own a $3000 pair of headphones. I used to own a pair of DCA AEON 2 Noires and returned them after 6 months because I found myself listened more with the 660s and Sundaras. I also listen much more with my Dynaudio monitors than with headphones but I do like to own good electronics, and in this case the MA X-SABRE 3 is my favorite DAC/Streamer.
 

nagster

Active Member
Joined
Jan 24, 2021
Messages
244
Likes
383
Input impedance graph and output impedance graph of the A90 Discrete.
I don't have an XLR4 conversion cable so there is no XLR4 output graph.
01_a90d_inimp_xlr.png
02_a90d_inimp_rca.png
 

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Matias

Major Contributor
Forum Donor
Joined
Jan 1, 2019
Messages
3,319
Likes
6,178
Location
São Paulo, Brazil
 

Madlop26

Member
Joined
May 2, 2021
Messages
82
Likes
126
Joshua Valor claims a sound difference between the A90 and A90D, hard to believe, he did a blind test to prove it, there is a video , but it was barely scientific to put it mildly.
Anyway I think he is moving to right direction, I guess....
 

registlse

New Member
Joined
Aug 11, 2022
Messages
4
Likes
2
Another person compared the two on another forum (Headfi), it says exactly the opposite, the A90D would sound leaner, analytical than the A90... you would have to order both to get an opinion!
 
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