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Owner's Heaven => DIYer Paradise => Topic started by: hyper on January 11, 2020, 09:24

Title: Purifi 1ET400A Class-D amplifier
Post by: hyper on January 11, 2020, 09:24
https://purifi-audio.com/vare/eval1/

https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-purifi-1et400a-amplifier.7984/

Anyone looking to DIY this modules? Looks like a top end class D amp.
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 13, 2020, 16:06
Hi Hyper!
I'm currently working on a dac-amp box with the Purifi dual mono kit
Luc
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 13, 2020, 16:13
I originally planned to use a dual mono NC500, but it looks like the Purifi goes one step further in audio quality and ease of integration
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on January 13, 2020, 23:31
I heard Gentaudio is planning a full kit for it... I am gonna wait a while to see what he is offering. The evaluation kit is less than 1K and if u add the SMPS we are looking at 1.5k for a top end 2 ch 400w stereo amp.

I initially wanted to get from Nord but decided to wait after hearing Gent is offering a full DIY kit.
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on January 13, 2020, 23:33
Hi Hyper!
I'm currently working on a dac-amp box with the Purifi dual mono kit
Luc

Wah so adventurous.... which DAC module are u using and what power supply?
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 14, 2020, 01:29
I heard Gentaudio is planning a full kit for it... I am gonna wait a while to see what he is offering. The evaluation kit is less than 1K and if u add the SMPS we are looking at 1.5k for a top end 2 ch 400w stereo amp.

i bought the purifi amp kit (dual mono + buffer) and an hypex smps3ka400 for less than 1k €
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 14, 2020, 01:32
Wah so adventurous.... which DAC module are u using and what power supply?

planning for the Soekris R2R dam1941 dac
power supply, i've already purchased the hypex smps3ka400, but i may change my plan. thinking.
maybe the cresnet, using 2 of them
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: jaffrie on January 14, 2020, 08:47
Everyone likes different flavors. I would recommend that you go with linear ps. Have played with hypex for a while including 2 versions of the smps & at the end of the day the linear ps wins, ps caps used where Mundorf Mlytic & Shindengen rectifiers.
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on January 14, 2020, 10:06
What’s the diff between SMPS3KA and SMPS1200A400? Hypex recommend to pair the NC400 and 500 with the latter one.

As for DAC, I just bought iFi Zen for MQA decoding and would leave the amp separate. I use my old IPad 2 as source streaming from Tidal. Best thing that happen since Spotify. Tears for Fears in Master quality is just sedap.... Vivaldi, Bach. 👍😬

I stream in my car with Tidal and the sound is also very good.
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 14, 2020, 20:08
Everyone likes different flavors. I would recommend that you go with linear ps. Have played with hypex for a while including 2 versions of the smps & at the end of the day the linear ps wins, ps caps used where Mundorf Mlytic & Shindengen rectifiers.

Hi Jaffrie,
Thanks for your info!
What model of linear ps did you use?
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 14, 2020, 20:11
What’s the diff between SMPS3KA and SMPS1200A400? Hypex recommend to pair the NC400 and 500 with the latter one.

just the power.
Nord uses one smps1200 per channel in some of their amps. The 3k can replace two 1200
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: jaffrie on January 15, 2020, 18:36
Hi Nihaoluc,
Just simple EI trafos, I like to build my amps in mono mono hence seperate PS. If you can, look for split bobbin type.
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on January 16, 2020, 18:39
just the power.
Nord uses one smps1200 per channel in some of their amps. The 3k can replace two 1200

I am leaning towards individual SMPS to power the modules. Likely be using smps1200 on each modules base on mono block footprint. I gonna stack them to reduce space 😂
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 21, 2020, 16:54
Micro-Audio are currently finishing the development of an SMPS specific for the Purifi amp module. Soon expected.
Their ps are recognized especially for component quality and low heating. And price is good too.
Usually evaluated better than Hypex'.

https://www.micro-audio.com/index.php?route=product/category&path=59

Waiting for the release...
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on January 23, 2020, 14:17
Micro-Audio are currently finishing the development of an SMPS specific for the Purifi amp module. Soon expected.
Their ps are recognized especially for component quality and low heating. And price is good too.
Usually evaluated better than Hypex'.

https://www.micro-audio.com/index.php?route=product/category&path=59

Waiting for the release...

The 600W SMPS looks to be a good form factor to squeeze for dual mono in a small chassis... unless u put in those additional input buffers.

When are u going to start ops... can I join u? :)
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on January 27, 2020, 02:57
The 600W SMPS looks to be a good form factor to squeeze for dual mono in a small chassis... unless u put in those additional input buffers.

Perfect for Hypex NC500 amp in a dual mono solution ;-)

When are u going to start ops... can I join u? :)

Very soon  ;D
Waiting for the DAC that will arrive quickly and I start mounting.
What do you mean with "can I join u?" ?
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: dewdrop on February 14, 2020, 14:49
Just stumbled on this thread - I am thinking of buying the Purifi EVAL1 kit, anyone else is interested? 4 sets and above will get enjoy ~6% bulk discount as well as we can split the shipping costs.
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on February 28, 2020, 17:24
Just stumbled on this thread - I am thinking of buying the Purifi EVAL1 kit, anyone else is interested? 4 sets and above will get enjoy ~6% bulk discount as well as we can split the shipping costs.

I am still thinking whether to get Purifi or just get the NC400 diy kit. The latter needs only 30 min to assemble and hola you got a pair of top class D amp for less than 2k
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: nihaoluc on March 01, 2020, 13:38
I am still thinking whether to get Purifi or just get the NC400 diy kit. The latter needs only 30 min to assemble and hola you got a pair of top class D amp for less than 2k
the dual mono Purifi kit plus power supply will stay within 1.5k.
the tests i've read so far tend to say the Purifi goes one step further in sound quality
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: tane0019 on March 01, 2020, 15:27
Come come come.  Let do up a Purifi unit and we AB.
I got a mono pair of NC400+SMPS600 in my storeroom awaiting :)
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: hyper on March 03, 2020, 06:30
Come come come.  Let do up a Purifi unit and we AB.
I got a mono pair of NC400+SMPS600 in my storeroom awaiting :)

Since u got a set sitting in your store room, sell to me lah.😜
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: tane0019 on March 03, 2020, 19:46
Since u got a set sitting in your store room, sell to me lah.😜

Though you want to get the Purifi ?
Title: Re: Purifi 1ET400A Class-D amplifier
Post by: escutcheon on March 30, 2020, 16:50
Just stumbled on this thread - I am thinking of buying the Purifi EVAL1 kit, anyone else is interested? 4 sets and above will get enjoy ~6% bulk discount as well as we can split the shipping costs.
Any more want to join in? The reviews just keep adding, and not a single bad one.
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