Hifimediy DDX320 opinions: Pure Digital Amps - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 18th February 2014, 10:03 AM   #1
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
Default Hifimediy DDX320 opinions: Pure Digital Amps

Hi

I didn't know whether to post this in the digital line level forum, or the Class D forum, but I chose this one as my question relates to DAC elements more that the amps.

Has anyone had any experience with Hifimediy DDX320 pure digital spdif input amps? Hifimediy DDX320v2.2 2.1 Digital Amplifier

I had thought that one would be a neat solution to replacing a SONOS Play 5, and have a fridge-top 2.1 music player in the pipeline. I am sure that it will be ideal for this use.

The more that I research the benefits of pure digital amplifiers, the more I think that they are an extremely elegant solution, and perhaps represent the way forward in many areas of audio.

I have a fairly high-end three-way active speaker build in the planning stages. I have the drivers already (Scan Speak R2904/7000 Tweeter, 15M4531 Midrange, 22W8851 Woofer), and am deciding the best way to build a system for them. Digital Spdif or Toslink input only (CD player, or SONOS Connect).

I have largely decided to make it minidsp based, and have been leaning towards the miniSHARK > Curryman DACs > Hifimediy V2/V1 amps, or Hypex UCD180HG - much more expensive

This is fairly complicated, but simpler (and cheaper) that the TP Buffalo 8 channel 12S solution that I had looked at earlier, as it is tried and tested with a good wiki from Curryman.

There is not much reported on the Hifimediy DDX320 except in its developemnt thread: Another project, all digital DDX amplifier Anyone have experience of these?

A much simpler (and possibly better) solution than even the miniSHARK > Buffallo > Hypex route, would be Minidsp Nanodigi > Hifimediy DDX320 (just using it in 2.0 mode. Very little soldering. One power supply: Connex SMPS500.

Some accounts of the DDX320 say that the overall SQ result exceed the usual good quality DAC and Class D amp solution.

Thoughts?
__________________
Regards.
Michael

Last edited by dublin78; 18th February 2014 at 10:11 AM.
  Reply With Quote
Old 18th February 2014, 11:01 AM   #2
Eldam is offline Eldam  France
diyAudio Member
 
Join Date: Sep 2012
Location: At home, sweet sound home...
Yeap. have one.

I wanted to try it because the good price. Forgett it iy your speakers need current. Tried it with three speakers : Boston Lynnfield 400L, Proac D15 and Kef 104/2 ref.

It's good for the price and a little system if your speakers is > 90/92 DB and IMHO if the lowest point of the impedance curve is > to 4 ohms ! Or the impedance curve is like the Sotchi downhill... accident !

But my final opinion is that the sound is poor for a system you listen to everyday. I have a tweaked NAD amp 2100 Monitor which is far better with its 60 Watts for driving speakers with big XOver and 5 drivers per speakers like the Kef 104/2 : in bass impact and sound quality. Here (92 DB/4 ohms) the Hifimediy splits...lake of power !

But it's not a review against this cheap little amp wich is fantastic for its price to do a cheap second system : just need a streamer and a pair of speakers.

I didn't try myself but to save money i will go for hypex for the bass in an active system and why not if you can setup the volume, classic semi-conductor for mids and tweeters...

EG this link for amps is a good idea : http://www.audiodesignguide.com/Chea...m3/index2.html


Sharc and curry man seems to be the cheapiest way to go active with quality...and no headachs. I thinked about that some month ago but stop because lake of money.

IMHO...

Eldam

Last edited by Eldam; 18th February 2014 at 11:18 AM.
  Reply With Quote
Old 19th February 2014, 08:10 AM   #3
irribeo is online now irribeo  Netherlands
diyAudio Member
 
Join Date: Apr 2013
On 4 ohm 86db'ish full range Mark Audio I like ddx320 very much, better than NAD (stock). Also on old BeoLab Penta3's I disconnected the 150watt rms mono AB power amp and used the DDX320 which was much better sounding on all soundlevels except very very loud. For ~$100 the DDX320's SQ is very good, I also use it with connex smps500, which probably is too big If you spent $1000's on well selected components I do believe higher SQ is possible LOL but this $100 I do not regret. (Problems with DDX320 I had were all direct or indirectly related with remotecontrol. I did not search for remote controlled amp, but DDX has it, and with that came some frustration/problems. Last few months the remote control doesn't work anymore AND now DDX320 is without other problems, so I won't be looking to fix remote(reception) LOLOL)
  Reply With Quote
Old 19th February 2014, 08:24 AM   #4
irribeo is online now irribeo  Netherlands
diyAudio Member
 
Join Date: Apr 2013
Oh forgot Funny enough, to me, I discovered my Opera (as cd-transport) sounds better with Toslink than with spdiff coax (tried all kinds of spdiff coax, really liked sound, but Toslink somehow seems to sound little better)
  Reply With Quote
Old 19th February 2014, 09:40 AM   #5
diyAudio Member
 
Join Date: Jul 2005
Location: Cardiff, Wales, UK
The person who calls himself Soundcheck really likes the ddx320. You might do a search for his comments in one of his many postings on this forum.

soundcheck's - audio@vise
__________________
Just the facts! State your evidence.
  Reply With Quote
Old 19th February 2014, 10:15 AM   #6
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
Hi

Thanks for your replies.

I have read Soundcheck's posts. He says that the DDX320 betters a tricked out Twisted Pear Buffalo III, through his Bastanis, which I suspect are very revealing. Efficient too.

Still thinking - We have had two very differing opinions so far.
__________________
Regards.
Michael
  Reply With Quote
Old 19th February 2014, 10:22 AM   #7
diyAudio Member
 
Join Date: Dec 2003
Location: Randers, Denmark
Quote:
Originally Posted by irribeo View Post
Oh forgot Funny enough, to me, I discovered my Opera (as cd-transport) sounds better with Toslink than with spdiff coax (tried all kinds of spdiff coax, really liked sound, but Toslink somehow seems to sound little better)
Toslink have naturally galvanic isolation. Following spdif standard in implementing coax out, also have transformer coupled output to have galvanic isolation. Unfortunatly many products do not have transformer coupled output, and therefore ground loops can occur. I hope you Opera have implemented the coax out correct.
  Reply With Quote
Old 19th February 2014, 10:32 AM   #8
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
The minidsp nanodigi has transformer isolated outputs luckily.
__________________
Regards.
Michael
  Reply With Quote
Old 19th February 2014, 01:41 PM   #9
Eldam is offline Eldam  France
diyAudio Member
 
Join Date: Sep 2012
Location: At home, sweet sound home...
You must notice SounCheck has high efficienty speakers from proffesional lines if I remember...)

+1 one for QP, because of the embeded DAC (and pre : you can swap between different sources with the remote control or the volume button).

But still thinking the sound is not natural (with all my speakers and Squeeze Box Duet and CDplayers as sources).

If one Pound is one Pound I will thinking about it twice (but maybe high efficienty bass drivers with not too low impedance curve). It's designed for around 6 ohms.

IMHO will go for the Shark and Curry module in I2S mode, with the saving money in wires, will go for bi-polar for the mid-tweet.
  Reply With Quote
Old 19th February 2014, 02:23 PM   #10
irribeo is online now irribeo  Netherlands
diyAudio Member
 
Join Date: Apr 2013
both Opera cd and DDX320 have transformer isolated spdiff output/input....
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New HiFimeDIY USB Digital Amplifier apocalypseon Class D 32 17th November 2014 11:36 PM
HiFiMeDIY T4 Digital Input ruinevil Class D 3 25th September 2013 11:48 PM
Pure digital crossover cka3o4nuk Digital Line Level 14 11th September 2010 11:08 PM
Digital amps and single driver speakers, opinions? Taperwood Full Range 30 20th March 2006 01:06 AM
Pure Digital amplifier modules? Ninfendo Class D 28 5th May 2005 04:34 PM


New To Site? Need Help?

All times are GMT. The time now is 05:06 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2