DIYMobileAudio.com Car Stereo Forum banner

NEW Brax Product - Revelation

10K views 43 replies 20 participants last post by  RNBRAD  
#1 ·
#3 ·
Based on the tags on the video, it might be a dsp amp?
 
#11 ·
RX2 Pro
 
  • Like
Reactions: ItsonlyaHONDA
#16 ·
I wonder what the price point will be on these? Guessing 2x the cost of the SD GAN amps.
 
#20 ·
I'm guessing these fall somewhere in between the GX and MX series amps but much closer to the current MX4 prices. I'm guessing $4500-$6000 retail, but that's pure speculation.

When I asked Nick back when he just responded with "Spensive". That's a dark omen for my wallet.
 
#21 ·
Looks like Audiotec-Fischer just took Purifi's technology, and put it in a fancy Brax chassis.
Not saying it won't sound good (I'm sure it will)... but I'm kinda disappointed, to be honest.

You could buy that amp direct from Purifi, for about $650.00 (minus the chassis)
 
#22 ·
I don't think this was just a drop in Purifi tech situation. Best I can tell from what I have heard and read, this was a 3 year co-development between ATF and Purifi to adapt this for mobile audio.
Image


I am actually excited to see Brax enter the Class D and small footprint world. I assume the GX and MX are going to remain in production.

I think it's a better move given where I think trends are heading in the mobile audio world - meaning it's getting more difficult to fit surfboard sized AB amps in most modern cabins and the benefit of the reduced load on a stock electrical system.

What I am more eager to see is what is replacing the ML line of speakers. You can't purchase any new ML speakers as of the last couple of months as they are discontinued which is screaming to me a whole line up of drivers to pair with this amp - presumably will also be under the "Revelation / R / RX" name as well.
 
#23 ·
I don't disagree. I know these will sound good. NAD also uses this Purifi technology in their new amps... and they sound amazing.
Over the past 5 years, Class D has taken huge leaps in the audio world.
It's becoming VERY hard to distinguish a high-end Class D sound anymore.

I'm just disappointed that it's another 2-channel amp, in a fairly large chassis (12" x 8").
It'd be way more impressive if they released a multi-channel version of this. Something with staggered output.
 
#24 ·
I'm just disappointed that it's another 2-channel amp, in a fairly large chassis (12" x 8").
It'd be way more impressive if they released a multi-channel version of this. Something with staggered output.
Don't disagree - I would love to see same footprint offered at 50% power figures as a 4 channel. Then at least you can run a nice 3 way front stage with two small-ish but potent amps.
 
#25 ·
I'll bet the Purifi module was a drag 'n drop to the Brax chassis, and the co-development done by Brax was merely the 12v amplifier power supply side that Purifi doesnt have nearly the same knowledge on.

If Brax was that confident in their class D research and development, then why not create their own independent class D design from the beginning? It seems they either couldn't best Purifi's specs so they didnt move forward with an in-house class D Brax design; or, they see the market shifting to all class D and it's the quickest method to have a class D option to the high end crowd and not miss market share.

Realistically, this is a $650 amp that will likely have a $6500 price tag.
 
#26 · (Edited)
I'll bet the Purifi module was a drag 'n drop to the Brax chassis, and the co-development done by Brax was merely the 12v amplifier power supply side that Purifi doesnt have nearly the same knowledge on.

If Brax was that confident in their class D research and development, then why not create their own independent class D design from the beginning? It seems they either couldn't best Purifi's specs so they didnt move forward with an in-house class D Brax design; or, they see the market shifting to all class D and it's the quickest method to have a class D option to the high end crowd and not miss market share.

Realistically, this is a $650 amp that will likely have a $6500 price tag.
Again, I'm, not saying this new amp won't sound fantastic. I'm confident that it will. The Purifi amp technology is solid.
But I feel that all Audiotec-Fischer did was add a robust 12V power supply and a fancy chassis, and stamped a Brax logo on it.

This kinda reminds me of when Andy released his AudioFrog amplifiers, and they were just rebranded Chinese amps in a nicer aluminum chassis.
(and then Andy got all pissy when people called him out on it... and quit this site)

I suppose these new Brax amps are better than that... but it feels more like 'marketing' than anything else...
 
#27 ·
This is the first of things to come, it’s cleaner than an mx4 pro by a fair bit, also the digital input will use the top line sabre dacs and disac

So no point upgrading to sabre dacs and then using analogue into the rx2 pro

So it’s not just an amp, it will get you… probably one of the cleanest amps money can buy… two of these with disac and an mx4 pro will make an awesome system

Revelation will be a new range not just the rx2 pro 😉
 
#38 ·

Can go here to see a price just on the amplifier chips. These are top of the line absolutely in Class D. One of their big competitors is Hypex.

I applaud any company that takes the best in the latest tech and puts it into the products. Even if it is just building a power supply for the chips and the inputs it is still not a small undertaking. I looked at the effort to build a ucd2k subwoofer amp and the costs to buy an off the shelf 12v supply including all the work to be done for the function(on/off/leds/etc). Its just not worth the time and effort unless your a hobbyist or work in electronics for a living.

There won't be any class D amplifier chip that can compare to this one on the market other than the hypex which I haven't seen in any car amps other than biketronics with its much older school UCD.
 
#40 ·
Wonder why the discrepancy in performance data of the A-weighted S/N ratio? 125db from their website and 108 in the test. That's a significant difference when all other parameters were spot on.
 
owns 2010 Mercedes W212 E550
#42 ·
Yea I think you’d have to be correct. Sure wish they’d give those details but I’m betting it’s a 1-5 watt rating where 108 would still be off the charts. Honestly, 1 watt specs are more important than rated output. 1st watt is the most important, not the last!!
 
owns 2010 Mercedes W212 E550
#43 ·
so there will be some more... but i quiz'd julian alittle and got some words from him... i should have more later... but for now...

"We have known some of the Purifi developers for 15 years, since they previously worked at Texas Instruments and actually developed the amplifier IC that we still use in the P SIX DSP ultimate today. Since we are development partners of Texas Instruments and occasionally test new amplifier ICs that are still in the development stage in real applications, we have known the guys for a very long time.

A few years ago, these engineers quit TI and, together with a few other cool guys, founded Purifi to be able to realise even cooler concepts. Since we still maintain good contact with the engineers, we then came up with the idea of making their technology suitable for automotive use at some point in our discussions with them....

However, since the Purifi modules were not developed for use in the automotive environment, we then implemented this together with them. The whole thing took almost 3 years in total for development, because the automotive requirements and conditions are much more difficult than in the home audio sector. This applies to temperature resistance (0° - 70° for the home audio module), short-circuit resistance (not implemented in the home audio module as we do), controlled, noiseless switching on and off, as well as numerous other adjustments and the exclusive use of automotive components to meet our standards for emf and noise.

The whole thing was also a new development project for Purifi, in which numerous adjustments to the proprietary clock technology were necessary to make it automotive-compatible. Our circuitry thus has its own software, its own design and also its own feedback loops for the Class D concept, for example to also take our output relay into account in the feedback in front of the loudspeaker outputs. To achieve the absurdly good measurement values, we also had to develop a completely new power supply unit that works in all modern vehicles (6V - 18V operating voltage) and is fully regulated to include vehicles with intelligent alternator control and to equalise voltage dips.

At the same time, the power supply had to work even cleaner and more precisely than that of an MX4 PRO in order to achieve these absurdly good measurements, since any contamination of the supply voltage for the amplifiers naturally affects the performance of the Purifi circuit. Nothing better can come out than what goes in... The whole thing is also described quite well in the current Car & Hifi International"

i hope that this goes a little way to help understand what goes into a flagship product like this that is a step away from the norm and make a break through in performance levels
 
#44 ·
Yea, when you delve into high performance flagship designs, it's always about how clean and fast the power supply is. In high end home audio, they have more room for voltage stabilizing components with a more stable power supply versus our automobiles. That's probably one of the biggest challenges to overcome.
 
owns 2010 Mercedes W212 E550
  • Like
Reactions: dumdum