2026/02 BRi-LPS01EXLE NU-DDC Edition Ver.1.1

Used as a power supply for the Ause NU-DDC and two Light Boosters.
The following is an excerpt from a user’s note. (Permission granted)
(Link to the full text at the end)

　The linear power supply is designed to achieve the best of both worlds: the responsiveness of a custom-designed switching power supply and the noise immunity and quiet operation of a linear power supply... quite an ambitious specification. ‘Is that even possible?’—that’s what audio enthusiasts with no knowledge of electrical design might wonder, yet they buy it anyway. There are several models in the range, but the NU-DDC version I bought starts at 77,000 JPY.

Incidentally, they also accept custom orders, and my setup features two DC outputs, meaning it can supply 7.5V to two separate circuits, which is a great help. By having them make a Y-splitter cable for this, I can power three pieces of equipment. This is because I have two of these rather mysterious devices called ‘Light Boosters’ made by Aise, and I need to run these alongside the DDC.

Intense.

　So this is what a linear power supply sounds like... It’s absolutely brilliant. It makes me look like a complete idiot for messing about with switching power adapters. The price is 77,000 JPY, plus customisation costs, cable fabrication and other expenses. I really shouldn’t have been buying loads of adapters for around 5,000 JPY each.

　An intense sense of soundstage, power and expressiveness. The NU-DDC is a product whose sound changes dramatically with voltage and current, but the results here are truly astonishing. There used to be a rumour—the veracity of which is unclear—that linear power supplies sound slower than switching power supplies, but I don’t sense that at all… if anything, the response is razor-sharp. A good response means, quite simply, that the sound is fast.

　The sound quality is absolutely superb; the difference between the DC and AC cables is clearly noticeable. The NU-DDC comes alive as if it were a completely different device.

　The sound quality is completely different; I could never go back to a switching power supply now... The difference is so vast that concerns about efficiency or electricity bills don’t even come into it. An audiophile on my timeline mentioned that if you want something in this class, it might cost over 200,000 JPY... I’ve never used a DC power supply unit that expensive, so I can’t say for sure, but the sound is so good that it doesn’t matter to me. In audio, the sound quality is everything.

　The best thing of all is that the DC cable is now replaceable, meaning I can use a custom-made cable rather than an off-the-shelf one. One thing to note is that OYAIDE Elec. standard DC cable terminals (the black plastic ones) are absolutely rubbish; even though the wiring is the same, they were inexplicably dampening the quality of this Linear unit quite significantly. However, the chunky gold-plated terminals shown in the photo—which I had made to order—have brought about a massive improvement.

　I reckon linear power supplies are quite sensitive to changes in cables and connectors, so I think it’s worth taking care over your DC cables and connectors. Once I had a Teflon-silver DC cable made for me, the texture and responsiveness improved dramatically, resulting in a smooth and simply astonishing sound… That feeling of the sound getting better and better over time is irresistible; I simply can’t do without it now.

A note by siina-daioujou (Sorry, Japanese language only.) →

2025/08 BRi-LPS01EXLE Ver.1.1 12V (RR7)

The product arrived today and we have confirmed that the sound has been played without any problems.

It is used for the clock generator power supply, and I have just started to play the sound, but I have the impression that the sound has become sharper, the blow-up has improved, the mid-low range has become thicker and the sound has become thicker or more robust.

I listened to it overnight and it has a richer spatial expression. The sound is more multi-layered and expresses a sense of air.

I think the cost-effectiveness of the sound quality improvement is one of the best ever. In our environment, the effect of the introduction to the clock seems to be significant.

2025/05 BRi-LPS01EXLE Ver.1.1 5/6V MC-3 DC Edition

I use it in my mc-3 (DC-ised, low-noise module built-in) and it has considerably improved the sound quality.

The sound is clearer and more clear, and the sound has more instantaneous power.

The sharpness and strength of the sound when the moment arrives is remarkable.

2024/07 BRi-LPS01EXLE 5/6V NU-DDC Edition

A linear power supply custom-made for Aise's DDC has arrived.

The specification is lavishly made of KG Super Through, MUSE-KZ, KA, PLG and Nichicon audio capacitors and the voltage is variable from 5.0 to 8.0V.
Although pre-aged, the overall freshness is high and the low frequencies are tight and good.

The Murata wideband noise filter and the copper foil tape applied to the transformer and inside the case seem to be effective, resulting in a very clear sound without distortion.
It is easy to feel the effect as it is only the power supply of the DDC that is dominant to the sound of the system.