[dmagnan]

Anyone have newer EQ settings to share? These are really great headphones on a technical level, but a bit of EQ helps the FR quite a bit.

Three relatively broad parametric filter sections:

+6 dB low shelf filter at 70 Hz, Q of 0.84
+6 dB bell filter at 2800 Hz, Q of 0.84
+3 dB high shelf filter at 5000 Hz, Q of 0.81

 

[Metal-Fi]

I have been lurking quite a bit on this thread but finally I made my mind up and hit the buy button on the Monolith AMT by Monoprice. The order was placed on Monday and I am currently waiting for a tracking code to be provided (even though it seems the parcel has already shipped). Hopefully it will arrive soon, as I am very curious to try this different driver technology.

 

[Metal-Fi]

Finally got them. It took quite some time because a few issues during the shipment redirected the package back to Monoprice...so I had to wait for a refund and ordered the AMT again, which I eventually received a couple of days ago. For the moment, I will not add any comments or impressions on the sound as I think it is a bit too early, even though I am enjoying what I hear. Build quality looks quite satisfactory and even though these cans are BIG (somewhat even beefier than M1570) and heavy, I have found that they sit really comfortably on my head - the headband provides a very good weight distribution and the large earcups with deep earpads are very gentle on the ears; plus, the clamping force is good enough to ensure a secure fit. Of course they will not sit unnoticed on the head and one must be careful not to bend the neck too much while wearing them, but these are compromises I can easily live with.
Now, waiting for some burn-in to be completed to come back with more articulate impressions on the sound...

 

[Chastity]

Monoprice.com has the AMT for $599 + EXTRA30 code for final price of $419.99. Ordered my set.

 

[trellus]

Monoprice.com has the AMT for $599 + EXTRA30 code for final price of $419.99. Ordered my set.

A good price! I got mine as an open box for even cheaper when they had a stupid-crazy sale on them, and I am very happy with them.

 

[Chastity]

A good price! I got mine as an open box for even cheaper when they had a stupid-crazy sale on them, and I am very happy with them.

No open box options, but still happy with this price for new.

 

[EmTone]

I've not bought these yet but does anyone know of any replacement pads that can go on these? I contacted Monoprice a while back about pads for the m1570c and I was told that they don't sell their pads, so I'm assuming they won't sell them for these either.

 

[Chastity]

I've not bought these yet but does anyone know of any replacement pads that can go on these? I contacted Monoprice a while back about pads for the m1570c and I was told that they don't sell their pads, so I'm assuming they won't sell them for these either.

https://www.aliexpress.us/item/3256804538528910.html?gatewayAdapt=glo2usa4itemAdapt

 

[Chastity]

AMT's arrived and going through my initial listening. The first impression I get from them is Effortless Detail. No congestion of the music playback. And boy do they like power. My M1570 like 10:30 on the volume knob of the Liquid Platinum. These seem to open up really well at about 1:00. I'm going to let them play overnight, before I tinker with any EQ. One thing I noticed with the mids is once I put power through them for a while, the mids seemed to stop being recessed and tonality seemed "normal", even when the volume is lowered.

I listened to "The Ten Commandments" theme from Film Busters DVD-A, and I felt I was listening to it in the theatre, and was enveloped in the orchestration. I was moved. Also the dynamics from Phil Collin's "In The Air Tonight" was impressive, and how some hard to hear background guitar work was easily discernable.

Oh, and the snow crunch in Diablo 4 while traversing the Fractured Peaks is amazing. Gaming with these will be an experience. I have to test it with 7.1 HRTF.

Now listening to The Eagles - Hell Freezes Over - "Hotel California".

 

[kl884347]

I've been having that weird driver buzzing noise on and off, to the point that I was ready to RMA them. I backed off the EQ between 2-4KHz and it went away. I think I shot myself in the foot by trying to over EQ them. Interesting.

 

[Chastity]

I've been having that weird driver buzzing noise on and off, to the point that I was ready to RMA them. I backed off the EQ between 2-4KHz and it went away. I think I shot myself in the foot by trying to over EQ them. Interesting.

I think you were causing some clipping in the feed, which came across as error.

 

[Chastity]

Three relatively broad parametric filter sections:

+6 dB low shelf filter at 70 Hz, Q of 0.84
+6 dB bell filter at 2800 Hz, Q of 0.84
+3 dB high shelf filter at 5000 Hz, Q of 0.81

I did a comparo to the M1570, and picked up on the tonality issue with the upper mids, so I tried out your PEQ, and found it mostly on par, but felt it was a little too polite, with a bit of a loss in dynamics. So I made a tweak to it:

Filter: ON LSC Fc 70 Hz Gain 6 dB Q 0.84
Filter: ON PK Fc 2600 Hz Gain 7 dB Q 0.81
Filter: ON HSC Fc 6000 Hz Gain 1.5 dB Q 0.81

Let me know what you think.

 

[dmagnan]

I did a comparo to the M1570, and picked up on the tonality issue with the upper mids, so I tried out your PEQ, and found it mostly on par, but felt it was a little too polite, with a bit of a loss in dynamics. So I made a tweak to it:

Filter: ON LSC Fc 70 Hz Gain 6 dB Q 0.84
Filter: ON PK Fc 2600 Hz Gain 7 dB Q 0.81
Filter: ON HSC Fc 6000 Hz Gain 1.5 dB Q 0.81

Let me know what you think.

I like your change of the midrange bell filter to a Q of 0.81, frequency of 2.6kHz and gain of 7 dB. I prefer to stay with the high shelf filter at 5 kHz. Since my original post I've changed the bass PEQ to add an additional low shelf filter at 38 Hz, gain of 2.5 dB and Q of 0.81. A little more presence, midrange dynamics and sense of fullness and naturality to instrumental bodies like of the double bass. The bass increase also significantly affects the midrange.

It's possible your observation that the upper midrange dip seems to correct itself after driving that region of the spectrum hard for a while may be accommodation of your hearing system rather than an actual change to the response of the AMTs.

 

[Chastity]

I sat down with the FR chart from Soundguys, and did some further tweaking based on the chart, and listening

Filter: ON LSC Fc 70 Hz Gain 6 dB Q 0.84
Filter: ON PK Fc 3000 Hz Gain 7.4 dB Q 1.110
Filter: ON HSC Fc 6000 Hz Gain 1.5 dB Q 0.71
# Filter: ON PK Fc 700 Hz Gain -0.7 dB Q 0.8

I felt the boost was creeping into the sub 1KHz area and doing some damage, and I made the High Shelf optional, since according to the chart, the mid-treble and above isn't too bad off. I tightened the upper mids boost to be narrower, as I was getting some harshness in 7-8KHz on some tracks, and to better match the chart. Finally got the female vocals up to par.

 

[EmTone]

https://www.aliexpress.us/item/3256804538528910.html?gatewayAdapt=glo2usa4itemAdapt

These wouldn't fit but they're the type I'm looking for. I'm hoping to find some velour & some perforated pads (+ full leather) but so far I've found nothing on Aliexpress with the same dimensions. The Goldplanar 850 came with a full leather and perforated hybrid pads, a reviewer said they preferred the perforated more. I imagine they'd be same dimensions as the Goldplanar 1200 but they use velcro pads(?) whereas these don't.
-
Anyway, I made some EQs for the AMT using the Goldplanar 850 frequency response. I'm hoping to making more later. You can import the files in PeaceAPO

AMT EQ 1:

Preamp: -12 dB
Filter 1: ON PK Fc 20 Hz Gain 3.0 dB Q 0.700
Filter 2: ON LSC Fc 90 Hz Gain 5.0 dB Q 0.700
Filter 3: ON PK Fc 200 Hz Gain 1.0 dB Q 0.500
Filter 4: ON PK Fc 1000 Hz Gain -4.2 dB Q 0.900
Filter 5: ON PK Fc 1750 Hz Gain -4.0 dB Q 1.400
Filter 6: ON PK Fc 2300 Hz Gain -3.2 dB Q 3.000
Filter 7: ON PK Fc 2800 Hz Gain 3.0 dB Q 2.000
Filter 8: ON PK Fc 3100 Hz Gain 1.8 dB Q 0.500
Filter 9: ON PK Fc 3400 Hz Gain 10.0 dB Q 1.500
Filter 10: ON HSC Fc 6000 Hz Gain 8.0 dB Q 0.700
Filter 11: ON PK Fc 8300 Hz Gain 5.0 dB Q 3.000
Filter 12: ON PK Fc 10000 Hz Gain -3.7 dB Q 0.700
Filter 13: OFF HSC Fc 12000 Hz Gain 3.0 dB Q 0.700

AMT EQ 2:

Preamp: -12 dB
Filter 1: ON PK Fc 20 Hz Gain 3.0 dB Q 0.700
Filter 2: ON LSC Fc 90 Hz Gain 6.0 dB Q 0.700
Filter 3: ON PK Fc 200 Hz Gain 1.0 dB Q 0.500
Filter 4: ON PK Fc 840 Hz Gain -1.6 dB Q 2.000
Filter 5: ON PK Fc 1110 Hz Gain -2.0 dB Q 0.800
Filter 6: ON PK Fc 2300 Hz Gain -2.2 dB Q 2.000
Filter 7: ON PK Fc 3000 Hz Gain 8.0 dB Q 2.000
Filter 8: ON PK Fc 3800 Hz Gain 2.0 dB Q 2.000
Filter 9: ON PK Fc 4000 Hz Gain 5.1 dB Q 0.500
Filter 10: ON PK Fc 6200 Hz Gain -2.9 dB Q 2.000
Filter 11: ON PK Fc 8300 Hz Gain 8.0 dB Q 4.000
Filter 12: ON PK Fc 9000 Hz Gain -5.0 dB Q 1.000
Filter 13: ON HSC Fc 12000 Hz Gain 5.0 dB Q 0.700

Both EQs are meant to be adjustable to taste, especially using the low/high shelf filters. For example low shelf filter can be reduced to 2.5/3db to get less low-end emphasis.