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Topping L70 Headphone Amp Review

Rate this headphone amplifier:

  • 1. Poor (headless panther)

    Votes: 14 4.7%
  • 2. Not terrible (postman panther)

    Votes: 1 0.3%
  • 3. Fine (happy panther)

    Votes: 28 9.5%
  • 4. Great (golfing panther)

    Votes: 253 85.5%

  • Total voters
    296

bearcatsandor

Member
Joined
Nov 11, 2020
Messages
44
Likes
73
Ok, so I've had my E/L 70s for 2 weeks now, so it's about time I contributed my impressions even though I really haven't wanted to, due to embarrasment.
I'm a recovering audiophile. I used to want expensive cables, $50k amps, $100k speakers etc. Over the last decade I've researched acoustics, joined forums like this one and hydrogen audio (they're cut-throat over there!) and it's help me recover from some silly beliefs. Well, I feel silly again. I think.

My stack is: Gentoo Linux computer mpv -> pipewire -> usb -> E70 -> L70 -> Sony MDR-7506

So, yeah my headphones are meh (I'll upgrade to DCA Stealth next), but the Topping units replaced a Focusrite Scarlet Solo which will be doing mic input duty now if needed.

What am I hearing and experiancing? I'm a fan of 菅野よう子 (Yoko Kanno). I have 866 of her tracks, a lot of favorites. "Favorites" not as in I really like them, but that I feel in love with the music. They feel like my own mind written out as musical notation. Even though I've listened to some of them hundreds of times, they make me weep every time. The first thing I played over them was her track "Medley" from Toko Sora. I didn't weep. I bawled. It felt like I was really hearing into it for the first time. It wasn't the usual "I've never heard that there was x instument there" this was actually hard to describe. I didn't hear a string section, I heard each string instrument as a separate entity all it's own.

This experiance is repeated with every track I've played since. Not the bawling, but the presense of individual instruments and voices. This combo takes things apart. The beach boys sound like separate people singing. It's still harmony, but it's not as ... melded? I don't hear "chiors" through these, I hear individual people. I hear the tremlo and of a sax solo that I've never noticed, and I swear I can hear the player's mouth movements. Kick drums don't go *thump* anymore, they have an envelope now and they produce notes.

One of my reference tracks is "Smile that Explodes" by Joseph Arthur. In the chorus a female singer appears to sing in both of your ears at once, while Joseph is in the middle. I'd wondered how they did that, and now I can hear that there's a delay in her voice in one ear.

All of these things I'm hearing are just there. I'm not listening for them. There so damned obvious now, as though someone changed the color of my walls from gold to bright yellow. These are definately awesome at the end of my studio chain.

So, different DACs should sound the same, amps of a type should sound the same. I haven't changed my software settings or anything and my hearing hasn't become better. What the hell am I hearing?

Addendum: There are some tracks that sound so different, that I'd swear they're not the same mixes. They are, but they don't sound like it.
 
Last edited:

BobSmith

New Member
Joined
Sep 8, 2022
Messages
4
Likes
3
Question regarding the balanced inputs on the L70:

I've got very little experience with balanced XLR inputs and their associated cables, etc. and was wondering:

If I wanted to use the L70 connected to my Shanling DAP that does balanced out of its 4.4mm output, would any of the standard balanced 4.4mm to XLR cables work?

Like this one:

Any links to cables that have worked for anyone here much appreciated. Thanks for any info!
 
Last edited:

rarewolf

Active Member
Joined
Feb 22, 2022
Messages
185
Likes
82
Question regarding the balanced inputs on the L70:

I've got very little experience with balanced XLR inputs and their associated cables, etc. and was wondering:

If I wanted to use the L70 connected to my Shanling DAP that does balanced out of its 4.4mm output, would any of the standard balanced 4.4mm to XLR cables work?

Like this one:

Any links to cables that have worked for anyone here much appreciated. Thanks for any info!

That should work… i.e., any XLR 3-pin should be standard XLR 3-pin. Just double check the poles against the cable versus the L70, and make sure the XLR’s gender is correct, and you should be good to go.

The XLR gender for this cable could be incorrect if it were intended for an output, but then, I would think the 4.4mm would be female…
 

nagster

Active Member
Joined
Jan 24, 2021
Messages
277
Likes
455
Question regarding the balanced inputs on the L70:

I've got very little experience with balanced XLR inputs and their associated cables, etc. and was wondering:

If I wanted to use the L70 connected to my Shanling DAP that does balanced out of its 4.4mm output, would any of the standard balanced 4.4mm to XLR cables work?

Like this one:

Any links to cables that have worked for anyone here much appreciated. Thanks for any info!
The linked thread may help you.
 

RosalieTheDog

Active Member
Joined
May 3, 2021
Messages
110
Likes
119
Hi, I have four questions on the functionality and use of this device as a pre-amp. Apologies if they are somewhat basic. Hopefully someone with technical expertise wants to chime in.

1) Is it possible to use both RCA-out and XLR-out simultaneously? (RCA to powered sub, XLR to power amplifier)

2) I wish to use it between a Topping D70s and a AUDIOPHONICS MPA-S125NC (=Hypex Ncore NC122MP). Is compatibility assured, which values (output and input impedance etc.) should I check?

3) Probably related to the previous question: should I connect the Topping D70s to the L70 through RCA or through XLR? Does this matter?

4) I don't plan to use these for headphone listening often, and if I do, my headphones are not hard to drive. Am I correct that in this use scenario, there are no advantages of the more pricy Topping A90D to the L70?
 

Bleib

Addicted to Fun and Learning
Joined
May 13, 2021
Messages
806
Likes
1,330
Location
Sweden
Hi, I have four questions on the functionality and use of this device as a pre-amp. Apologies if they are somewhat basic. Hopefully someone with technical expertise wants to chime in.

1) Is it possible to use both RCA-out and XLR-out simultaneously? (RCA to powered sub, XLR to power amplifier)

2) I wish to use it between a Topping D70s and a AUDIOPHONICS MPA-S125NC (=Hypex Ncore NC122MP). Is compatibility assured, which values (output and input impedance etc.) should I check?

3) Probably related to the previous question: should I connect the Topping D70s to the L70 through RCA or through XLR? Does this matter?

4) I don't plan to use these for headphone listening often, and if I do, my headphones are not hard to drive. Am I correct that in this use scenario, there are no advantages of the more pricy Topping A90D to the L70?
3) XLR. Slightly better
4) You probably don't need the A90D nope (neither do I)
 

rarewolf

Active Member
Joined
Feb 22, 2022
Messages
185
Likes
82
Is anyone aware of the error codes that might come up on the L70?

Mine came up with the code ‘r3’ when prompted to turn on via the 12V trigger, and then was unresponsive. I turned it off for a few seconds and then on again, and it’s now sweetly playing loud & clear again…
 

Jimster480

Major Contributor
Joined
Jan 26, 2018
Messages
2,514
Likes
1,757
Location
Tampa Bay
Ok, so I've had my E/L 70s for 2 weeks now, so it's about time I contributed my impressions even though I really haven't wanted to, due to embarrasment.
I'm a recovering audiophile. I used to want expensive cables, $50k amps, $100k speakers etc. Over the last decade I've researched acoustics, joined forums like this one and hydrogen audio (they're cut-throat over there!) and it's help me recover from some silly beliefs. Well, I feel silly again. I think.

My stack is: Gentoo Linux computer mpv -> pipewire -> usb -> E70 -> L70 -> Sony MDR-7506

So, yeah my headphones are meh (I'll upgrade to DCA Stealth next), but the Topping units replaced a Focusrite Scarlet Solo which will be doing mic input duty now if needed.

What am I hearing and experiancing? I'm a fan of 菅野よう子 (Yoko Kanno). I have 866 of her tracks, a lot of favorites. "Favorites" not as in I really like them, but that I feel in love with the music. They feel like my own mind written out as musical notation. Even though I've listened to some of them hundreds of times, they make me weep every time. The first thing I played over them was her track "Medley" from Toko Sora. I didn't weep. I bawled. It felt like I was really hearing into it for the first time. It wasn't the usual "I've never heard that there was x instument there" this was actually hard to describe. I didn't hear a string section, I heard each string instrument as a separate entity all it's own.

This experiance is repeated with every track I've played since. Not the bawling, but the presense of individual instruments and voices. This combo takes things apart. The beach boys sound like separate people singing. It's still harmony, but it's not as ... melded? I don't hear "chiors" through these, I hear individual people. I hear the tremlo and of a sax solo that I've never noticed, and I swear I can hear the player's mouth movements. Kick drums don't go *thump* anymore, they have an envelope now and they produce notes.

One of my reference tracks is "Smile that Explodes" by Joseph Arthur. In the chorus a female singer appears to sing in both of your ears at once, while Joseph is in the middle. I'd wondered how they did that, and now I can hear that there's a delay in her voice in one ear.

All of these things I'm hearing are just there. I'm not listening for them. There so damned obvious now, as though someone changed the color of my walls from gold to bright yellow. These are definately awesome at the end of my studio chain.

So, different DACs should sound the same, amps of a type should sound the same. I haven't changed my software settings or anything and my hearing hasn't become better. What the hell am I hearing?

Addendum: There are some tracks that sound so different, that I'd swear they're not the same mixes. They are, but they don't sound like it.
Well if before you had a Scarlett; it has a kinda crappy amp overall. So really having a proper headphone amp that can drive your headphones properly does the biggest wonders for sound from everything in your chain except the headphones themselves. Although I have found more "normie" mundane headphones to sound much better through a proper amp because average everyday products just in general don't provide enough power for headphone amps. Most companies don't give it a thought and use a "single chip solution" and it sounds as such.
 

nagster

Active Member
Joined
Jan 24, 2021
Messages
277
Likes
455
I appreciate the response. Coming from the studio world, it just seems like such an odd measurement/spec to leave out.

Well, if anyone that has it could measure when the front end clips it would be much appreciated. Thanks again.
Four months have passed, but here is the L70 THD+N Ratio vs Generator Level graph.
tp_l70_rca_maxin_02.png
tp_l70_xlr_maxin_02.png
 

nagster

Active Member
Joined
Jan 24, 2021
Messages
277
Likes
455
Are you saying that high amplification is better?
Theoretically, the lower the gain, the lower the output noise.
This graph does not allow direct comparison of each sweep line.
The Y-axis is the measured 1kHz sine wave level and the ratio of distortion + noise, but because the measured 1kHz levels of each sweep line are inconsistent. The X-axis here is the generator output level = L70 input level.
This measurement is mainly to understand the clipping level of the L70 input.
 

NexusOne

Member
Joined
Dec 20, 2021
Messages
48
Likes
6
I want to buy the E70 and L70 combo for my Edition XS because it is clean and neutral. I read in the other thread there is a channel unbalance. But that‘s Not a standard? I think if you Need a Remote there is no better choice than this?
 
Joined
Mar 27, 2023
Messages
10
Likes
2
@staticV3 Hello! Do you have a graph of l70 power versus headphone impedance (balanced connections E70 4V with l70)?

I saw in one of the threads of the forum that you provided such a graph for the A30 pro (screenshot page mycurvefit.com).

Or please tell me what power the l70 has when using headphones with a resistance of 13 ohms (if using DCA Aeon 2 with a balanced cable)
 

Zeliya

Member
Joined
Jan 7, 2023
Messages
15
Likes
12
@staticV3 Hello! Do you have a graph of l70 power versus headphone impedance (balanced connections E70 4V with l70)?

I saw in one of the threads of the forum that you provided such a graph for the A30 pro (screenshot page mycurvefit.com).

Or please tell me what power the l70 has when using headphones with a resistance of 13 ohms (if using DCA Aeon 2 with a balanced cable)
 

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luv2fly3

New Member
Joined
Feb 18, 2021
Messages
1
Likes
0
Hi, I have four questions on the functionality and use of this device as a pre-amp. Apologies if they are somewhat basic. Hopefully someone with technical expertise wants to chime in.

1) Is it possible to use both RCA-out and XLR-out simultaneously? (RCA to powered sub, XLR to power amplifier)

2) I wish to use it between a Topping D70s and a AUDIOPHONICS MPA-S125NC (=Hypex Ncore NC122MP). Is compatibility assured, which values (output and input impedance etc.) should I check?

3) Probably related to the previous question: should I connect the Topping D70s to the L70 through RCA or through XLR? Does this matter?

4) I don't plan to use these for headphone listening often, and if I do, my headphones are not hard to drive. Am I correct that in this use scenario, there are no advantages of the more pricy Topping A90D to the L70?
Did you ever get an answer for #1? I would like to do the same thing and power a sub off the RCA and amp off XLR. Do they work at the same time?
 
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