*Guaranteed to work for one year. We hope you will consider the amount of groundwork and know-how required to guarantee a one-year warranty on an item that has aged. ★A famous BOSE model that produces sweet bass that you wouldn't imagine from its size. This improved model disregards the cost of mass-produced units and uses expensive parts extensively to further improve sound quality and reduce the failure rate. Bluetooth 5.1 is also built-in for easy high-quality sound. Furthermore, the sound pressure level has been adjusted to overcome the problem of the sound being too quiet, which is common with aftermarket Bluetooth. Please enjoy the high-quality sound and smooth operation of this unit, which has been well-maintained. ・Electrolytic capacitors in the audio signal circuit have been replaced with Rubicon film capacitors, which are more suitable for audio, and Nichicon's high-grade audio grade components, which are currently difficult to obtain. ・Electrolytic capacitors in the heat-generating parts of the control board have been replaced with MLCCs, etc., which have a longer lifespan, lower internal resistance, and less loss. ・All capacitors are measured and selected before replacing parts. ■Effects The sound quality, information content, and resolution of the entire range are "significantly improved" to a level that can be clearly felt. ・The low frequencies have a clearer outline. ・The mid frequencies have more depth and luster, and you can clearly feel the breath of the vocals. ・The high frequencies have noticeably increased resolution, and the sharpness and decay of snare drums and toms are smoother. Even those who are not very interested in audio will definitely notice the difference. ■The following work has been completed ・All electrolytic capacitors replaced ・Bluetooth built-in & sound pressure level adjustment ・CD unit overall cleaning, greasing, pickup & rubber belt replacement. Waveform inspection and calibration ・All motor oil maintenance ・Cleaning and conductivity improvement treatment of all terminal connector contacts ・Amplifier IC grease replacement ・Isolator circuit added ・Many others ■Appearance ・The main unit is in very clean condition. There are no noticeable scratches. There is a single scratch on the glass stand. ■Shipping contents ・Main unit ・Main unit & BT instruction manual & catalog (printed) ・Glass stand ・Power cord ・"Genuine" remote control ・Removed parts ■Warranty ・Free support for malfunctions for one year from arrival (one-way shipping fee separately, free support including shipping fee for the first month from delivery) ・We also accept maintenance, repair, and custom work regardless of the warranty period. 【5040】 #wave #music #system #Bose