Aug-Line Short Pin

The "Aug-Line Short Pin for Each Company's Pre-Main Amplifier" is a high-performance pre-main amplifier dedicated short pin made using the gold and silver alloy "Aug-Line".
The connection terminals are pipe-shaped ones with a wide contact area, and the inner and outer surface areas are used to enhance the skin effect and achieve surprisingly high sound quality.
This product is a pre-main amplifier with a pre-output, a power input with an RCA terminal, and is compatible with a type of product with a distance of 14 mm in the center and center. In addition, if there is a separate switch between the prepowers, please use the switch on the separate side.

The pre (control) part and the main (power) part of the L-550A are not connected in the unit, but there is a pin connector on the outside, which is connected and a short pin is attached from the beginning. By replacing this, you can enjoy the change in sound quality.
I immediately replaced it with the included short pin. Then... oh my! I don't think it's the same amp sound.

Both the sound loss and the sense of localization have improved dramatically. It's as refreshing as if the fog has cleared. It's like seeing the performers playing in front of you. I feel like the amp has been upgraded by about 2 ranks. Or rather, I'm surprised that he originally had this much ability.
* Magnet diary