FLUX M-Field Class-A MOSFET headphone amplifier.

[kenz0]

Anyone that got the amp so far.

If you are familiar with that treble sheen some high powered headphone amps have, can you confirm if this amp does not have that?

My M-field is still in the break-in phase (about 24h for now), but from opening the box until now, it had really liquid and detailed but fatigue/glare-free treble.

 

[kenz0]

I'm waiting for a good Mentor vs M-Field review shoot-out. Where's my guy @Ichos .

I used to demo Mentor in the past, M-field is breaking in now (24h).
So, M-field early impressions vs Mentor from memory: Mentor is more neutral and refined in every aspect of the spectrum, with a bit more sparkle on the top and very refined for detalisation bass.
M-field is darker, smoother on both ends, with thicker bottom and more vocal forward, it does have a touch of tubbiness magic to the vocal.
Scene - I think they are close, with Mentor being a bit bigger.
Transients - I remember Mentor as very-fast paced having blazing fast attacks, M-field to me sounds a bit slower with less micro-contrast, but having more lushness and richer textures of every note.
Both have liquidity of the sound associated with good class A, for now M-field sounds more tube like, while Mentor having more solid-state character of the sound.

 

[ThEvil0nE]

Anyone that got the amp so far.

If you are familiar with that treble sheen some high powered headphone amps have, can you confirm if this amp does not have that?

I finally did a longer listening session last night and as it stand the treble has intricacy added to the detail. Intricacy in a way that the plucking of strings, cymbal taps and crash has really good definition without glare, it's quite amazing. Placement of instruments is very good too and there spacing between instruments has measurable depths between them. I also have never enjoyed listening to my 90s alternative music playlist until this. I am saying all these with only having the BHA100 quad 12ax7 hybrid amp so proverbial grain of salt applies.

 

[ThEvil0nE]

@kenz0 the bass and lower mids is where the impression of being slow is. It is a beautiful representation of old school mosfet sound characteristic. That is then paired up with how the rest of the mid-upper frequencies that I described. It is a wonderful sound.

 

[Erick Muller]

Can somebody share the spec sheet of this amp please?. I need to know how many watts it's delivering into 300ohms in order to determine if this is a good candidate for ModHouse Tungsten's.

 

[Slackaveli]

They have the product page so locked down we can't even see the specs.

 

[jkteddy77]

I'm waiting for a good Mentor vs M-Field review shoot-out. Where's my guy @Ichos .

Comparison incoming. White is Mfield Silver, Black is Mentor Silver.
I will give initial impressions, but Mentor's treble sound totally smoothed out after ~40 hours so it may take time for true race.
As with the Mentor, with 32ohm both are clearest on Low gain. On Medium tho, this amp slams bass like i've never experienced haha.

First 5 minutes, it is much sweeter than the Mentor. Slightly smaller stage closer to the head with the vocals centered between your ears. Imaging seems just as strong.
Has the bass/mid richness of the MJ3, but much thicker and weightier, and I mean MUCH. But less of the MJ3's punchy presentation.
Tubiness is present, in a way the Violectric's have. It's not muffling like the V222 seemed, I'd imagine this is what the character of the V550 is.
Treble does seem unrefined still. This I'm certain will change with burn-in as it reminds me of Mentor out the box.
The Mentor resonates Timbre more presently, and I think that's due to tuning as it's not covered by Bass/warmth

Most simply this direct comparison is exactly as you already know it to be.
Flat vs warm, rich, intimate

Big Note for your decision: whichever you go with, DO get the Neotech OFC cable. This comparison is tough as they both massively benefit in transient speed, treble extension, and bass depth. I have to keep switching my one cable for my testing haha

 

[Erick Muller]

They have the product page so locked down we can't even see the specs.

Unfortunate, maybe when a review comes out they will talk about specs or somebody here that has tungstens if they could confirm if it runs them well enough.

 

[ady1989]

Unfortunate, maybe when a review comes out they will talk about specs or somebody here that has tungstens if they could confirm if it runs them well enough.

FluxLabs themselves told me that they have Tungstens on hand for testing and development. Apparently between the two amps, most people prefer the M-field because it's more engaging. They also assured me that one amp is enough. If I'm going to spend this much money (don't forget shipping and duties) on a product that goes out of stock and is hard to get in the first place, not to mention the potential for the factory to be bombed, I'm going to buy two and get it over with. So now I have two

The wait for Tungstens is going to drive me mad, so I ordered the HE1000SE. Can't wait to hear the comparison between the M-field and Mentor!

 

[ThEvil0nE]

Can somebody share the spec sheet of this amp please?. I need to know how many watts it's delivering into 300ohms in order to determine if this is a good candidate for ModHouse Tungsten's.

Hit them up on social media or email, they are very responsive.

 

[jkteddy77]

I still have access to the details from my order, here's the information from the page.
I think the M-Field is like 95% of mentor's total output, seems one wheel 'click' past it to match, so in practice equally as competent

 

[RobWilde]

Has the bass/mid richness of the MJ3, but much thicker and weightier, and I mean MUCH. But less of the MJ3's punchy presentation.

This is very useful, thank you.

 

[Slackaveli]

Sounds like a real winner!

 

[smallcaps]

Had some time to compare single M-Field vs mono stack. It's now clocked in at over 200h burned-in non-stop. I've probably listened to about 20 of those hours with mostly music (hip-hop, classical, jazz, electronic, in order of quantity) and some gaming (playing Once Human). Chain is in my signature, driving the DCA Stealth.

First of all, my experiences are aligned with the impressions in this thread, so far. Also worth noting that the DCA Stealth sounds like a new headphone when compared to my previous amps. It's scaling rather well and I was very happy with the DX9 driving them, but the M-Field(s) have brought them to another dimension. Like Goku changing to Mastered Ultra Instinct... Dragonball nerds will know what I'm talking about.

A single M-Field is more than enough to drive the DCA Stealth. However if you want to squeeze that last 5% performance, the mono configuration of the M-Field offers lusher mids, adding a depth of stage that is apparent when critically listening to single vs mono mode. Soundstage is pushed out but still manages to sound full. Male voices sound like they are coming from the chest, with very clear instrumental seperation and no muddy-ness across the spectrum. Treble is still smooth but has more detail and definition. Single and mono mode have not been syblant for my 40+ year-old ears.

And that bass... Wow. Don't know what to say... It is textured, layered, and well-defined, with an unbelievable amount of quantity and quality. In mono mode it's perceivable and apparent, but honestly, I don't know if I would miss it driving the DCA Stealth in single amp configuration. Will need to wait for the Tungsten to see if the difference is more pronounced, but for my current stable of headphones, 1x M-Field is plenty.

What I haven't tried yet is PEQ, and I suspect that this is where mono mode is going to shine. Stay tuned...!

 

[Erick Muller]

I still have access to the details from my order, here's the information from the page.
I think the M-Field is like 95% of mentor's total output, seems one wheel 'click' past it to match, so in practice equally as competent

Perfect dude, 1.6 watts at 300 ohms, that's all I needed to know, more than enough for tungsten's, Thanks for sharing!!!!