Should have my Purifi 1ET400A evaluation kit in under 2 weeks. It comes with a basic input buffer board, and 2 modules. I'm going to source the supply elsewhere. Basically the quality of the input buffer is going to determine how this unit sounds. Just like with the Hypex NC-500/1200. Unlike the Icepower 1200AS, you need an input buffer with these modules. The input impedance is only 4.4K, and it only has 12.8db of gain. But I have loads of experience in this department. I built 9 generations of input buffers for the NC-500. Gen 2 is used by Nord, Apollon, and several others. By the time I made it to gen 9, the gen 2 buffer that so many love sounded broken in comparison.

New writeup on Purifi:

https://audiophilestyle.com/ca/bits-and-bytes/meeting-the-experts-of%C2%A0purifi-in-munich-r801/

I really wanted to go to Munich for this event, but bad timing. Too busy with the Puremusic Jr, moving etc.

I only sold 1 product with my 9th gen NC-500 input buffer. The lucky owner is @Audiogeek. The Purepower integrated. It had 4 channels of preamp using 8 fully balanced Slagleformer autoformers! 4 went to the internal amps, and the other 4 to the pre-outs. to fade the volume from the pre-outs to the internal amps, you press the side buttons on the remote. Right display internal amps, left pre-outs. It was made for an active setup. You had the option of an active or passive buffer on the NC-500's enabled by rear push button.

I have 2 purepowers with the 1200as. The 9th gen nc500 betters them in every way except absolute grunt. If the purifi amp is another step up it would be amazing. The puremusic monoblocs should be exceptional.

The Puremusic Monoblock's will be the 10th gen. With digital inputs so no DAC is required.

I’m also contemplating building a stereo unit like the Puremusic Jr with these amps, as an intermediate product between the Puremusic Jr, and Puremusic monoblock‘s.

With the Purifi EVM buffer board there's the ability to add additional regulation as well as bypass the onboard input buffer. So I'll be able to test out with my opamp-less Purebuffer from the Puremusic Jr, along with my Purereg regulators. I suppose my Purebuffer is my 10th generation buffer. The Purifibuffer will be the 11th gen.

I announced this in my Puremusic Jr listening impressions thread. So I suppose mention it here as well.

I'm planning a new addition to the line up in-between the Puremusic Jr, and Puremusic monoblock's. It will just be called the Puremusic. They will use the Purifi 1ET400A modules, with 11th generation Mivera Audio input buffers using technology taken from the PMJ Purebuffer design. But far more advanced as they need to have more gain, and many power supply elements built onto the board. Far far better than my 2nd gen buffers used by Nord, Apollon, and several others in their Hypex Ncore NC-500 amps.

Also it will have a higher end DAC section than the PMJ, that I'm confident will be superior to even what the discontinued Purestream MK2 would have been. It will use iOS device based battery powered wireless streamer input the same as the PMJ. Target price is $2999, but not written in stone yet.

People may be wondering where's the discrete class A opamps? Well I've found a better way to do things that opamps of any type, discrete or IC can't touch when it comes to sound quality. The best opamp is no opamp! This is a huge reason the Puremusic Jr sounds so good for a measly $1099. Just wait until I supercharge this implementation with the Purifibuffers! :)

Brilliant. Looking forward to continued progress in your work on a opamp-less Purifi 1ET400A idea.

So if you look at the power plot, the Puremusic at 100% volume in Roon will be around the 0.01% THD+N level with a full 0dBFS signal:

You don't want to drive them any harder than that anyways.

Actually I'm playing around with this again. I thought there was a reason I was keeping it on device volume. But now that you mentioned it again I'm going to do more listening tests comparing DSP volume setting with device volume. I've been through this before but it was a while ago. We can continue this on the Puremusic Jr listening impressions page.

My Purifi amps ship from Denmark tomorrow! I'm going on a small trip from Friday till next Tuesday. They'll be waiting for me when I return. Expect feedback next Wednesday.

My Purifi amps have shipped!

Purfect....

Look what I have here. Nice to see genuine German Wima and Japanese Rubycon caps. In contrast, Hypex uses Su'Scon caps out of Taiwan.