Topping A70 Pro HP & Preamp Review

[Tony Roma]

Anyone ordered one in stock yet?

 

[AVKS]

Thank you. I did that exact search and it didn't, and still doesn't, pull up for me. Weird.

222 x 176 x 48 mm

Source : https://www.google.com/search?q=topping+a70pro+dimensions

 

[AVKS]

View attachment 286064

I'm all for graphic design and such but this should just be clearly listed somewhere instead of buried in the middle of a wall of graphics. Maybe it's just me.

Onward with the thread! Looks like a great product.

 

[IAtaman]

I'm all for graphic design and such but this should just be clearly listed somewhere instead of buried in the middle of a wall of graphics. Maybe it's just me.

Onward with the thread! Looks like a great product.

Agreed. Posting just a non text searchable image as product specs/marketing material is not helpful.

 

[renaudrenaud]

Agreed. Posting just a non text searchable image as product specs/marketing material is not helpful.

Yes but he uses a benchmark and bla bla bla.

 

[Whoareyou]

Slightly different specs from the Pre90, but it also has the headphone amp and the display to help out with seeing what's going on.
So, at this price point what is advantage of ordering the pre90?

 

[Elitzur–Vaidman]

When I check my mixes, I do check them with headphones and monitors. The A90D and A70Pro don’t have both outputs active, you have to switch between headphone amp or pre amp. The HPA4 have both outputs active all the time with separate volume control and mute. I think the HPA4 is currently the only headphone amp / pre amp with this capability. Sometimes I have friends and customers coming to check their mixes so I use the unbalanced inputs in the HPA4 to plug in their equipment.

Couldn't you pair those with a D90 or D70Pro and use the RCA outputs as a way to switch between monitors and headphone amps?

 

[enricoclaudio]

Slightly different specs from the Pre90, but it also has the headphone amp and the display to help out with seeing what's going on.
So, at this price point what is advantage of ordering the pre90?

Currently, I don't see the advantage on ordering a Pre90. If Topping has an update for the Pre90, D90SE and A90D in the works, then most likely that would be the one to get instead of the current Pre90.

 

[1122333]

A70pro sounds excellent, it is a non dyed, transparent, and stretchy tone.

Secondly, I must give a thumbs up to its Preamplifier. I can't hear any difference between plugging the speaker directly into the DAC and the A70Pro, just like it doesn't seem to have passed through this device....

 

[Veri]

I must give a thumbs up to its Preamplifier. I can't hear any difference between plugging the speaker directly into the DAC and the A70Pro, just like it doesn't seem to have passed through this device...

Wire with gain!

 

[mdunjic]

In bed? It's 9:50 in the morning!

 

[Music1969]

I really wonder about this, too.

Nothing to wonder - other than its sexy looks, I can't see anything where A90D is better

Looove that dot matrix display for volume.

Unique , stands out as different

But A70 Pro beats it in everything else

 

[Ken Tajalli]

Wire with gain!

Wire with volume control, you mean.
. . . and a headphone amplifier.

 

[jruser]

A70pro sounds excellent, it is a non dyed, transparent, and stretchy tone.

Secondly, I must give a thumbs up to its Preamplifier. I can't hear any difference between plugging the speaker directly into the DAC and the A70Pro, just like it doesn't seem to have passed through this device....

View attachment 286112

Can you test the range on the remote for us? That was an issue with some past Topping products.

 

[jruser]

So, if you use the Ext90 with this, do the extra inputs also have the higher impedance? Or does the Ext90 have its own impedance?

 

[jdan1457]

How does an end user get the 12.6w at 32ohm out of this amp?

Is the reason Amir's measurements not as high as theirs because he's measuring at lower distortion?

Do amps in daily use somehow produce more distortion and reach more power?

I just don't get how they can claim that level of power if a person can't actually reach that in daily use.

Edit: I guess a better question would be under what conditions does the distortion and power increase to reach the 12.6w?

 

[staticV3]

How does an end user get the 12.6w at 32ohm out of this amp?

Take the Amp out of the box, give it power, plug in a DAC and Headphone, and turn up the volume.
No special configuration is needed to get 12.6W at 32Ω.

Is the reason Amir's measurements not as high as theirs because he's measuring at lower distortion?

Yes.

Do amps in daily use somehow produce more distortion and reach more power?

No.

I just don't get how they can claim that level of power if a person can't actually reach that in daily use.

But a person can reach that in daily use.

Edit: I guess a better question would be under what conditions does the distortion and power increase to reach the 12.6w?

High enough input voltage + high enough volume on the Amp.

 

[jdan1457]

High enough input voltage + high enough volume on the Amp.

I guess I really just thought that I was gonna read Amir's review and it was gonna be 12.6w. The numbers for the A90D and L70 were the same/close enough to their marketing but this one isn't.

 

[Music1969]

High enough input voltage

What is max input voltage of this amp?

 

[staticV3]

What is max input voltage of this amp?

I don't know. Probably 9+ Vrms.

The only person I know who tests max input voltage is @nagster

See:

Topping A90 Discrete Review (Headphone Amp & Preamp)

I returned my A90D - much happier with my SMSL SP400 (47k ohm input impedance, also with stepped resistor relay volume control, and the best THX amp modulates AAA-888) No firmware issues.

www.audiosciencereview.com

Topping L70 Headphone Amp Review

Doe the L70 generate heat on standby? In addition to the observations of others: (my room temperature is 19°C) - without power the L70 feels 'stone cold' - in standby mode it doesn't feel cold anymore, but not warm either - switched on for 90 min. it feels warm but not hot

www.audiosciencereview.com