This product was originally designed to enhance the power supply to bring out the performance of the AKM (Asahi Kasei Micro Devices) DAC AK4493SEQ X 2 in the FiiO K7/K7BT.
Later, due to requests for operation with 5V and low-power USB PD GaN adapters, a low-power version has also been designed.

See design distribution for design objectives

Noise Cleaner + Bulk Capacitor and Power Smoothing Module, which is only for switching/transformer/USB PD GaN element AC adapters, and is only effective in terms of reducing noise in the upstream adapters.
It is a cost-effective and easy to use solution.

The price is in the Petit Susie + Tank LE class, but it is difficult to reduce the cost because we distribute these products privately and they are not mass-produced.
Also, the parts used in Susie and Tank/LE/SS can be procured inexpensively from general products, but our products are selected with particular attention to audio grade products and power cables, so the price is inevitably higher.

There is also a higher version of the PSM02 series with a cut-out filter developed from the LPS01 series of linear power supplies, offering even higher resolution, sound separation and excessive response.
There is also the LPS01 series of linear power supplies, which are completely free of switching noise and complete for their intended purpose.

Common items for BRi-PSM01 series

• Reduces high-frequency noise from 100 KHz to 1 GHz by using the Murata EMIFIL BNX016-01 EMI filter for noise suppression.
  (The wall of high frequencies felt with the Petit Susie and ATH-W5000 are not felt with this product, making it clear all the way to the top)
• Noise reduction from audible frequency range up to 200 KHz by using Nichicon audio aluminium electrolytic capacitors and WIMA film capacitors
• Enables mounting of up to seven aluminium electrolytic capacitors on a single board, making it possible to achieve a power smoothing capacity equivalent to Susie+Tank with just one, and just over four times as much with a medium capacitance.
• DC input Singatron DC connector (outer diameter 5.5 mm / inner diameter 2.1 mm) for stable connection.
• DC output DC plug (OD 5.5 mm/ID 2.1 mm) or terminal block
  (From 21/4/2024) Oyaide 102SSC 3398-18 0.75sq cable is used for the DC cable and Marushin Radio MP121CF is used for the DC plug to provide high current countermeasures and enhanced sound quality in the entire area (approx. 15 cm).
• Original design considering noise countermeasures 2-layer board
  Board size 98 mm X 30 mm with 10 mm spacer
  In order to combine the functions of the Petit Susie + Petit Tank into one unit, it cannot be accommodated in the size of the Susie, etc. by any means and is slightly larger.
• Wako Technical SR-4N, using silver-cored solder for audio.

• Basically, the price is almost only the cost of the parts and shipping, as it is made for distribution and as a hobby.
  Remark:
  Due to the fact that we are undergoing medical treatment, the price of parts and shipping costs alone is becoming more and more difficult to cover future designs and consumables, so we are adjusting the prices of the items we sell on Yahoo!
  We have also reduced costs by soldering all the DC cables, but please note that we cannot offer the same low prices as Petit Susie, which is mass-produced in China and uses very cheap generic products, due to the cost of designing and manufacturing original boards, audio grade top-of-the-range components and EMIFIL. Please note that we cannot offer the same low price as Petit Susie, which is mass produced in China and uses very cheap generic products.