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Topping A30Pro Review (Balanced Headphone Amp)

tmo

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Jul 28, 2021
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Most definitely it's not the A30 Pro amp based on your description. Check the simple stuff like volume of D10B - when first connected to iPhone by default volume is pretty low.
Thank you. You were totally right! I’m case anyone is wondering, it turns out that the D10B (and D10S) require an iPhone to be plugged into power to start up. Sorry to spam this board.
 

phoenixsong

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Has anyone had an issue connecting this to a DAC + USB-A to USB-B cable + Apple Lightning to USB3 Camera Adapter + iPhone?

It works when I connect it to the D10B + USB-A to USB-C cable + MacBook
Wouldn't you be able to tell if your A30pro is working by feeding the D10B from this proven chain/configuration into it?
*Glad you were able to solve the issue that quickly!
 

tmo

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Wouldn't you be able to tell if your A30pro is working by feeding the D10B from this proven chain/configuration into it?
*Glad you were able to solve the issue that quickly!
Me too! I guess the D10B could draw enough power from my phone to make it show up on my phone's output selection menu and register the frequency on the D10B screen, but not enough power to send a signal to the A30pro.
 

Renaudjuju94

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IMG_20210825_235512.jpg
 

Hi-res-user

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Received this amp today. Tried my AKG K240DF with it and found the volume was not large enough for me at high gain. I used RCA input. The source was LG V30 with volume at max. I’m planning on returning it, and will stick with my Sony STR-DH190 receiver, which gives me plenty of headroom. I feel sorry this amp didn’t work out for me and that I have to return it. I guess the K240DF is too power hungry.
 

Veri

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Received this amp today. Tried my AKG K240DF with it and found the volume was not large enough for me at high gain. I used RCA input. The source was LG V30 with volume at max. I’m planning on returning it, and will stick with my Sony STR-DH190 receiver, which gives me plenty of headroom. I feel sorry this amp didn’t work out for me and that I have to return it. I guess the K240DF is too power hungry.
The LG likely provides too little voltage output. Using a proper source with 2 or more Vrms or balanced with 4 or more Vrms will drastically increase maximum output. I feel like you barely scratched the surface of this amp....
 

aandres_gm

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Received this amp today. Tried my AKG K240DF with it and found the volume was not large enough for me at high gain. I used RCA input. The source was LG V30 with volume at max. I’m planning on returning it, and will stick with my Sony STR-DH190 receiver, which gives me plenty of headroom. I feel sorry this amp didn’t work out for me and that I have to return it. I guess the K240DF is too power hungry.
As someone suggested, your source seems to be the issue.
 

Raex

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Apr 23, 2020
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Just tested my A30Pro for the "music out of the amp itself" thing with XLR and it also does it.
I doubt that there are Units that don't do it, I first thought mine doesn"t but after turning the volume knob to max in high gain (no headphone connected) the music appeared haha.
Lower than about 80% in high gain and the music disappears again.
 

tmo

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Hi everyone. Forgive the dumb question, but does this amp drive multiple outputs (say all three being used) at the same time with the same power?
 

enricoclaudio

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Hi everyone. Forgive the dumb question, but does this amp drive multiple outputs (say all three being used) at the same time with the same power?

Want to know this too as I just ordered a A30Pro to use it with my Matrix Audio X-SABRE 3.
 

Adamant

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Hello all,
I'm new to this scene.

I have this amp (Topping A30Pro) with a topping D10S powering Sennheiser HD650.
The volume level starts to get uncomfortably loud on High Gain about 3/4 volume. Is it too quiet? is my DAC good enough?
Also, is it worth getting a balanced cable? Assuming I'm reading the charts correctly, 730 milliwatts (unbalanced) vs 813 (Balanced)

Thank you,

Adam.
 

f1shb0n3

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Hello all,
I'm new to this scene.

I have this amp (Topping A30Pro) with a topping D10S powering Sennheiser HD650.
The volume level starts to get uncomfortably loud on High Gain about 3/4 volume. Is it too quiet? is my DAC good enough?
Also, is it worth getting a balanced cable? Assuming I'm reading the charts correctly, 730 milliwatts (unbalanced) vs 813 (Balanced)

Thank you,

Adam.
Amir measured it and JohnYang1997 confirmed the balanced output has the same power as single ended, basically added there for convenience if you have such cable already. This is a major benefit of A30Pro that it has all that power on single ended and saves you the cost and hassle of having to buy new cables for more power as most other amps.

Be careful with those uncomfortably loud volumes - you can permanently damage your hearing with that much power. Learn to appreciate medium gain - it has better measured performance and when the pot is closer to max the channel balance is best.
 

Chagall

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Hello all,
I'm new to this scene.

I have this amp (Topping A30Pro) with a topping D10S powering Sennheiser HD650.
The volume level starts to get uncomfortably loud on High Gain about 3/4 volume. Is it too quiet? is my DAC good enough?
Also, is it worth getting a balanced cable? Assuming I'm reading the charts correctly, 730 milliwatts (unbalanced) vs 813 (Balanced)

Thank you,

Adam.

To get 730mW, you would need balanced dac 4V output. Your dac outputs 2V, so you aren't getting 730mW. That said, it should be loud enough for HD650. If you plan on some day getting ultra hard to drive headphones, then get a new dac. Output cable from the amp doesn't matter in A30Pro's case.
 
Last edited:

GPJ

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Received this amp today. Tried my AKG K240DF with it and found the volume was not large enough for me at high gain. I used RCA input. The source was LG V30 with volume at max. I’m planning on returning it, and will stick with my Sony STR-DH190 receiver, which gives me plenty of headroom. I feel sorry this amp didn’t work out for me and that I have to return it. I guess the K240DF is too power hungry.

Veri is correct. I was trying to use an E30 (SE only) to feed my A90 using power hungry HE6se headphones. The volume control was nearly maxed out at high gain.

Replaced E30 with a D30 Pro and used the XLR hookup to send 4V into the A90 ...... problem solved! Much more usable volume control.

Also, like using the D30 Pro as a pre-amp with my Emotiva XPA-2 Gen 2 power amp.

An A30 Pro, D30 Pro is a phenomenal combo for the price paid.
 

ReaderZ

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Veri is correct. I was trying to use an E30 (SE only) to feed my A90 using power hungry HE6se headphones. The volume control was nearly maxed out at high gain.

Replaced E30 with a D30 Pro and used the XLR hookup to send 4V into the A90 ...... problem solved! Much more usable volume control.

Also, like using the D30 Pro as a pre-amp with my Emotiva XPA-2 Gen 2 power amp.

An A30 Pro, D30 Pro is a phenomenal combo for the price paid.

I just don't get how can you guys listen to such high vol. I am using HE6 SE too, I have A90 as well, but to avoid too many cables I decide to try DX7 pro direct out and I end up with it on low gain -10db with -12db in E-APO. Seems I am very unusual for listening at such low vol? But most people around me listen at similar vol...
 

kion

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Seems I am very unusual for listening at such low vol? But most people around me listen at similar vol...
I felt exactly the same way today lol

 

enricoclaudio

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Jan 7, 2021
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This my A30Pro volume level getting signal from X-SABRE 3 via RCA and driving my DCA AEON 2 Noire. XLR outs from X-SABRE 3 are sending signal to my Dynaudio monitors. I'm on High Gain in the A30Pro but also running Oratory1990 EQ settings with volume leveling on AUTO and Headroom Management set at -3dB in Roon. Pass 3 o'clock my ears will start bleeding. Also, the MA mini-i Pro 3 is connected to the A30Pro via XLR too so I can switch amps on the fly and compare headphones/streamers :)

IMG_8398.jpeg
 
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