• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). There are daily reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Topping A70 Pro HP & Preamp Review

Rate this preamplifier and headphone amp:

  • 1. Poor (headless panther)

    Votes: 12 4.2%
  • 2. Not terrible (postman panther)

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

    Votes: 33 11.5%
  • 4. Great (golfing panther)

    Votes: 234 81.3%

  • Total voters
    288

Tony Roma

Member
Joined
Aug 22, 2021
Messages
19
Likes
35
Location
Essex UK
Hi, anyone who has this amp getting distortion ?, i am getting it on the right channel on some music at higher volumes.
 

szaki1001

Member
Joined
May 31, 2023
Messages
6
Likes
18
Hi, anyone who has this amp getting distortion ?, i am getting it on the right channel on some music at higher volumes.
I don't hear any distortion. Alison Balsom - Caprice. No distortion, but I will test it on wilder music and write about it. I'm falling now, she has such a beautiful voice! More low notes, punchier, faster. Requires a silver cable.
 

Tony Roma

Member
Joined
Aug 22, 2021
Messages
19
Likes
35
Location
Essex UK
I don't hear any distortion. Alison Balsom - Caprice. No distortion, but I will test it on wilder music and write about it. I'm falling now, she has such a beautiful voice! More low notes, punchier, faster. Requires a silver cable.
What sort of volume are you listening at?
 

GPJ

Addicted to Fun and Learning
Forum Donor
Joined
Jan 3, 2019
Messages
645
Likes
850
Hi, anyone who has this amp getting distortion ?, i am getting it on the right channel on some music at higher volumes.

Have you ruled out the headphones as being the culprit? Or the source mastering? The amp should be completely transparent.
 

moosso

Member
Joined
Aug 5, 2021
Messages
47
Likes
63
It’s definitely the amp as have just tried another and it’s fine ☹️
You can do a simple test, try swap the headphone connector (if your headphone has dual connectors), if the left channel start distort after swap then it's on the amp, if distortion still at right channel then it's on your headphone.
I think this amp is suit for low sensitivity planars, it can clip or destory other headphones easily.
Wait till DX9 ;)
Yes though I don't know why topping start putting orange LED in their new amps (EHA5, DX9), maybe it can make the sound warmer.:)
 

Tony Roma

Member
Joined
Aug 22, 2021
Messages
19
Likes
35
Location
Essex UK
You can do a simple test, try swap the headphone connector (if your headphone has dual connectors), if the left channel start distort after swap then it's on the amp, if distortion still at right channel then it's on your headphone.
I think this amp is suit for low sensitivity planars, it can clip or destory other headphones easily.

Yes though I don't know why topping start putting orange LED in their new amps (EHA5, DX9), maybe it can make the sound warmer.:)
I have tried that and it moves to the left. This amp has supposed to have 17w output at 16ohms, my phones only require up to 6w at 16ohms, seems like this thing is running out of steam or just cant cope at higher output.
 

mantabjaya27

New Member
Joined
Jun 4, 2023
Messages
2
Likes
0
Correct me if I'm wrong...
But if I feed 5V to A70 Pro using D70 Pro, it will have peak power of 4.1875 W @ 600ohm in high gain?
Or peak power of 37.5 W @ 600ohm in high gain?
 

Ahmonge

Active Member
Forum Donor
Joined
Sep 30, 2022
Messages
135
Likes
107
Location
Valencia, Spain
Correct me if I'm wrong...
But if I feed 5V to A70 Pro using D70 Pro, it will have peak power of 4.1875 W @ 600ohm in high gain?
Or peak power of 37.5 W @ 600ohm in high gain?
No, you’ll get the maximum rated power at a different volume put position.
 

Ahmonge

Active Member
Forum Donor
Joined
Sep 30, 2022
Messages
135
Likes
107
Location
Valencia, Spain
Ah... okay, but is my calculation correct? Are the numbers correct?
No. The amplifier will deliver the maximum power stated by the manufacturer (1370 mW at 300 Ohms and 670 mW at 600 Ohms, balanced output, 0.1% THD+N ) at different volume knob positions. Increasing the volume If the volume is increased past this point, the output stage is saturated and only distortion is obtained.
 

beq1990

Member
Joined
Jan 25, 2021
Messages
16
Likes
11
Hello, I have a question for the owners of the A70 pro: is it easy and fast to change te gain setting without using the remote? Or the gain setting is hidden someone in the menu? Thank you
 

HYQID

Member
Joined
Nov 10, 2021
Messages
11
Likes
23
Hello, I have a question for the owners of the A70 pro: is it easy and fast to change te gain setting without using the remote? Or the gain setting is hidden someone in the menu? Thank you
it's in the menu's first page,very easy to find.
 

ra990

Member
Joined
Jul 6, 2019
Messages
75
Likes
97
When using the C1 and C2 remote presets, the A70 Pro seems to default SE input for C1 and BAL input for C2 and this can't be changed. Is this a bug in my unit? Can someone else try this when they get a chance?
 
Last edited:

HYQID

Member
Joined
Nov 10, 2021
Messages
11
Likes
23
When using the C1 and C2 remote presets, the A70 Pro seems to default SE input for C1 and BAL input for C2 and this can't be changed. Is this a bug in my unit? Can someone else try this when they get a chance?
It was reported before, and Topping has updated a new firmware to fix it.
 
Top Bottom