[musicday]

I am getting my Mega Millions lotto ticket tonight, fingers crossed! If and when I win, Hugo TT 2, possibly a Dave but don't want to go crazy with it you know.

I thought that you are rich already

 

[Rob Watts]

@Rob Watts

Hi Rob, owner of a TT 2 for the past week and a half and it has been thoroughly enjoyable so far. When listening, instruments sound very real - the attack / transients are incredible; extremely resolving, pristine clean with a background as black as the void, musical with incredible bass reproduction out of the head amp output (only nitpick is the lack of a female 4-pin XLR for convenience - want to use my custom XLR HP cable). Listening via Focal Clear, Sony MDR Z1R and HD650's. I can honestly say the TT2 is punching above its price point.

I'd like to ask a question about the TT 2's D/A stage; looking beyond the FPGA / digital filtering stage, before the output amplification stage. How does the TT2 actually convert the FPGA digital output into an analogue signal? Can you please give an overview? I understand you are using a discreet output stage of your own design but what is the fundamental architecture of it? Is it a delta-sigma D/A? R2R Ladder (doubt it)?

Here's the exam question: If delta-sigma, what makes it better than the cheap D/A delta-sigma chip in my phone of which are worth pennies?

Thanks.

Yes as @Rhamnetin says it's a 10 element pulse array.

Do a search on Head-Fi, I have done lots of posts explaining it in detail.

But in a half dozen short sentences for TT2:

1. It's delta sigma but with 300 dB noise shapers running at 104MHz. That's a billion times more small signal resolution than high end DACs, and this accuracy is needed to preserve micro small details; and this is needed for depth perception.
2. Pulse array is innately jitter insensitive - no measurable jitter at all.
3. Pulse array has no measurable noise floor modulation. All other DACs have easily measured noise floor modulation.
4. Pulse array innately has negligible distortion (it's actually well below -150dB - see Dave measurements).
5. Pulse array has no measurable fundamental non-linearity - it will resolve a +/-32 bit LSB signal (-186.6 dB) accurately.
6. Pulse array needs minimal filtering, and no differential tricks; hence the analogue is very simple (one amp, two resistors, two capacitors) in the direct signal path.

In short it bears no resemblance to any other DAC topology at any price.

Rob

 

[x RELIC x]

Do a search on Head-Fi, I have done lots of posts explaining it in detail.

These may help @RustyGates:

https://www.head-fi.org/threads/chord-electronics-dave.766517/page-132#post-12395944

https://www.head-fi.org/threads/watts-up.800264/page-9#post-12586725

 

[paul2qute]

I've got the rest of the money to pay for my Hugo TT 2,phoning nintronics up tomorrow to pay it off, they better not of sold mine, I pre-ordered it ages ago

 

[Whazzzup]

just a sec need my specs. LOL

 

[paul2qute]

I've sent Roger a million emails!Can't bloody wait now won't sleep tonight.Can't remember how to set up Roon with it though

 

[TSAVAlan]

I thought that you are rich already

If only I didn't keep buying more audio gear myself...

 

[musickid]

If i were you Paul i wouldn't accept a measly 2k. At the very least 6 months to 1 year pay don't compromise and don't accept their offer.

 

[JTbbb]

I've sent Roger a million emails!Can't bloody wait now won't sleep tonight.Can't remember how to set up Roon with it though

Mine pre-ordered too, though I’m trying to be cool about it! Seems others on this forum have already got theirs, so keeping cool could go out the window! Be interesting to see who gets first.

 

[paul2qute]

Mine pre-ordered too, though I’m trying to be cool about it! Seems others on this forum have already got theirs, so keeping cool could go out the window! Be interesting to see who gets first.

Spoke to Roger today, he reckons silver ones coming in next week but he not sure about the black ones, I'm convinced the black demo one he received was mine but hey ho.It's all paid for now so can get excited waiting for it now, I just know I'm gonna be blown away

 

[ZappaMan]

Spoke to Roger today, he reckons silver ones coming in next week but he not sure about the black ones, I'm convinced the black demo one he received was mine but hey ho.It's all paid for now so can get excited waiting for it now, I just know I'm gonna be blown away

Did you get new headphones for the occasion ?

 

[paul2qute]

Did you get new headphones for the occasion ?

I did but don't know if to say in here your all gonna laugh

 

[paul2qute]

They got slaughtered in the reviews I've read,think they called susvara or something

 

[ZappaMan]

They got slaughtered in the reviews I've read,think they called susvara or something

I prefer headphones with either wood on them or ones that have numbers in the name. Makes upgrading easier.

 

[paul2qute]

I prefer headphones with either wood on them or ones that have numbers in the name. Makes upgrading easier.

Like the Denon 9200 ?