Archive for the 'Audio' Category

Testing the Amp6!

Yep after some hours of work, here it is:

amp6_test.jpg

I have put it in a « BEARD » box, with gold connectors, a toroid transformer, Audioquest cables (speakers), Ah Phan Kim « Espace » for modulation, and two GREAT 4,7uF caps for inputs!

It just works fine, but got some little problem:

  1. It makes a BIG « Ploc » at unsleep (or power if the sleep jumper is on)
  2. The input level seems not to be as good as it should be. The gain is to big, and the sound pot does not its job, the power is going to quick. I think I sould modify the input stage.

Wait and see…

Amp6 assembly step by step!

I have taken some pics from my Amp6 assembly. You can see how simple it is. The only difficult step is, for me, the toroid inductor winding. Something also to admit: if you don’t have good eyes, just go away :)

Continue reading ‘Amp6 assembly step by step!’

Amp6 kit from 41hz.com!

Hiya! Sunday 8 june, I have buyed the Amp6 kit from 41hz.com. It arrived only after 9 days. Great works, Jan!

This little Class-T amp should be better than the Trends Audio TA 10.1! All reviews from the net give good advice from it.

It consists of a small 43X100X40mm pcb and a TriPath TA2020 chip (and lotsa small components :) ).

Amp6 kit

I have also borrowed a 15V transformer, an Alps variator and some gold connectors to make all together soon.

Will

Testing Trends Audio TA10.1

For those who know me well, I’m also interested in audiophile sound. I’ve got a quite simple but great system wich consists of :

  • Arcam Alpha 8SE CD player
  • Audio Innovation Lamp Amplifier
  • JPW Sonata speakers
  • QED Silver Spiral modulation & TypeIV speaker cables.

This system gave me full pleasure since more 10 years. But THE big problem about it is the time to get ready: the vacuum lamp amplifier has to get hot. Without this, the sound is really limited, like a normal Class A :).

With my actual life, already trying to run after time, I was spending less and less time listening to music. Too much time to wait for the system to be ready.

A few months ago, the amplifier got problems : one of the channel was disturbed by a snoring, due to bad caps. As I was in a lack of time, the Audio Innovation was disconnected and I stopped completly to listen music :( !

Last days a friend of mine, Hervé Degard, told me about numerical amplifier, and the little -but great- Trends Audio TA 10.1 . This small amplifier – you can hold it in the hand – gaves a very hight quality sound and is based on the « Class-T » technology (in fact itself based on the Class-D type).

He lands me one for testing:

trends1.jpg trends2.jpg

As you see, it is really SMALL and seems to be a toy. But don’t trust your first advice, this little box provides an impressive sound!

Its specifications:

T-Amp IC Tripath TA2024
Output Power 2 x 15W @ 4ohm, 2 x 10W @ 8ohm
Signal-to-Noise Ratio (SNR) 98dB
Dynamic Range 98dB
IHF-IM Distortion 0.10% @ 1W, 4ohm
THD+Noise
0.03% @ 9W, 4ohm
0.1% @ 11W 4ohm
0.1% @ 6W 8ohm
Power
10% @ 15W 4ohm
10% @ 10W 8ohm
Power Efficiency 81% @ 15W, 4ohm, 90% @ 10W, 8ohm

After just 30 minutes of listening, I was completly amazed by this product. The sounds is really defined, and feeling just fine. Yes, it is NOT as good as my Audio Innovation, but I must admit that it gaves me very good sensations, just like a big amplifier.

So now, why this test on a Atari freak website? Just because this product reminds me the well known message from our loved computer trademark:

« Power without the Price! »

This type of amplifier, that delivers so great sound, is very cheap, considering the price of « normal » amplifiers. The Trends Audio is actually 150€ (less more if you buy it in US on the net), and sounds more than a 300-400€ one.

For more informations, just go to theses reviews:

So what? Well I think I will certainly buy one, but perhaps the KingRex T20U one, wich include a USB DAC converter inside, just to connect my Hackintosh on it :) Wait and see…