If you lift the lid on the Power Supply in the Pulse and the LPSU from Innuos (which I own) there is very little if ANY difference between them. I also lifted the lid on the Pulse Mini and compared it to the board in the Pulse and there is literally zero difference I can see, other than the AES port on the digital board. You have to remember the Pulse Mini came out long after the Pulse, Pulse is the oldest design in the Pulse line up.
Are there audible differences, I can't say, but based on what I see in the designs of the two pieces they are almost identical. I would love someone to prove me wrong here, but I'd say it would be hard to create an audible difference between Pulse mini with LPSU and Pulse, all things being equal.
Indeed, the digital board is more or less the same with the exception of the added 4GBs of RAM in the Pulse.
But the Pulse power supply (which quoting the Innuos site includes an audio-grade toroidal transformer with epoxy-filled centre for dampening vibration, magnetic screening with coated SYN-SHIELD copper tape between windings and wrapped in black Mylar Tape, over 40000µF of high-end Mundorf Capacitors and a Coilcraft Inductor) seems to be a bit more sophisticated than the Zen line LPSU and available only within the Pulse.
Now, there is no reason why the Zen LPSU won't sound really good with the Pulse mini and in fact, that's what I would do if I were on a budget and also had no need for the D to D board.
BTW, I've owned the Pulse and now the Pulsar, but I distinctly remember the Pulse mini being already available, while the Pulse was yet to be released, something that correlates with their net history and the order they were reviewed as well.
I've took a photo of the Pulse innards and posted it on this thread:
2022 was in many respects a particularly bitter year, for the reasons we all know. However, in purely hi-fi terms, it has proven to be quite interesting with numerous new equipment emerging and new thinking proliferating. For my system, I could even say it had a transformative effect, since my...
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