True-Blue class d amplifier using the latest chip innovations from Axign

[Stokdoof]

Hi all,

Are you aware of the Axign chip innovation for class D amplifiers going on in the Netherlands ? The new class D amplifier True-Blue box designed with this chip sounded great at the Dutch hifi show X-FI in Eindhoven, the Netherlands.

https://truebluebox.com/product-page/true-blue-box-2/

https://www.axign.nl/

Thanks,

 

[maxxevv]

Send one in for measurement then !

 

[Julf]

Are you aware of the Axign chip innovation for class D amplifiers going on in the Netherlands?

So what is innovative about their class D amps?

 

[BillG]

Are you aware of the Axign chip innovation for class D amplifiers going on in the Netherlands ?

If you're referring to the Pulse Width Conversion technology that they're using and referring to as a "Power DAC", Texas Instruments has been doing that on a number of their Class D amplification chipsets for awhile now. I've a ~$120 USD integrated amp from a Chinese company that utilizes the technology in the form of the TAS5548 chip...

 

[scott wurcer]

Hi all,

Are you aware of the Axign chip innovation for class D amplifiers going on in the Netherlands ? The new class D amplifier True-Blue box designed with this chip sounded great at the Dutch hifi show X-FI in Eindhoven, the Netherlands.

https://truebluebox.com/product-page/true-blue-box-2/

https://www.axign.nl/

Thanks,

The Baltic birch sandwich enclosure looks interesting, almost DIY.

 

[restorer-john]

The Baltic birch sandwich

I read that and thought "he ships sushi from Japan for lunch and now Baltic bird sandwiches? What is he? Gordon Ramsay in disguise?" Then I saw birch...

Had some o-toro flown in from Fukuoka market yesterday, it was only a small sample but I didn't have to pay.

 

[GeorgeWalk]

The Baltic birch sandwich enclosure looks interesting, almost DIY.

Looks like a stack of picnic trays.

 

[scott wurcer]

Looks like a stack of picnic trays.

Perfect with the IKEA bowl speakers.

 

[BillG]

As a visual artist, as well as a scientist and engineer, I appreciate good design. However, this isn't doing it for me; If I'm paying over $1,000USD for an integrated amp, I don't expect it to look like a stack of unfinished plywood...

 

[Tks]

Lookin like some avant-garde joke in terms of the enclosure..

 

[Julf]

Lookin like some avant-garde joke in terms of the enclosure..

Someone got a laser cutter for Christmas...

 

[maxxevv]

Someone got a laser cutter for Christmas...

lol ... probably wood router. Laser cutter would have resulted in charred edges .....

 

[KSTR]

So what is innovative about their class D amps?

The feedback. Normally, a class-D amp has an internal analog feedback path to make the amp work. but here the feedback signal is digitized (with an ultra-fast ADC), can be processed/filtered digitally and control PWM output pattern directly. This allows for much higher loop gain in the audio range, for lowest distortion and low output impedance. Basically the same thing that Bruno Putzeys did with the Ncore in analog. Also, it is very easy to install arbitrary output impedance profile because the chip has multiple parallel layers so you can have a voltage- and a current-based feedback signal and process/mix them in digital. Very handy for active speakers....

 

[BDWoody]

As a visual artist, as well as a scientist and engineer, I appreciate good design. However, this isn't doing it for me; If I'm paying over $1,000USD for an integrated amp, I don't expect it to look like a stack of unfinished plywood...

View attachment 37232

Looks like something I would have made out of ice cream sticks as a kid...

 

[Ron Texas]

I would think making the case out of Popsicle sticks would be more interesting.