LAWO 7550 Pre-amp

The is a simple project which was made for a friend of mine. Not much technical information in the post, though a custom-made LPS was developed to fit into the case and the LAWO board. The LAWO board was purchased online and provided by my friend.

In the middle of the pre-amp it is the power switch. In an attempt to deliver a minimal style, the power indicator (white in color) was not shown in the front panel. Instead, it points towards the desktop so a light at the desktop appears when the device is turned ON.

On both sides of the pre-amp they are the individual left and right channels respectively. These high-precision volume attenuators are also provided by my friend, my job was to measure the dimensions and design the appropiate case to accomoodate them. Again, there is not much technical technical skill required.

The sound coming out from this pre-amp is "purified". It becomes softer, more analogue and comfortable. There is not much gain though. I did not measure the voltage gain but it be should be good enough for ordinary home audio equipment.

Comments

  1. David25 September 2021 at 16:09

    好漂亮！

    ReplyDelete
  2. SMP Gadgets29 September 2021 at 17:01

    左右係獨立步進式音量控制，中間係電源開關

    ReplyDelete
  3. David20 November 2021 at 15:23

    真的很漂亮~！

    ReplyDelete
  4. Валентин23 November 2021 at 20:15

    Good afternoon. Please details the name of the components where to buy. thanks
    Добрый день .Пожалуйста подробности название компонентов где купить . спасибо

    ReplyDelete
    Replies
    1. SMP Gadgets23 November 2021 at 20:40

      Hello
      Sorry many of the components were provided by my friend, as far as I know he purchased them from eBay. I only designed the power supply and the case. These components are available in taobao. The case was fabricated with CNC machine.

      Delete
  5. EnolaCarter22 August 2022 at 17:02

    Thanks for sharing this wonderful knowledge about smart home. If you are looking for a professional company who offer services for SMART HOME SINGAPORE , then you must go for FuturaHaus. They provide smart home services in All Singapore at affordable prices. To explore more about them Visit their website now!

    ReplyDelete

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