■ Price Not Negotiable ★ A renowned BOSE model that produces sweet, low-frequency sounds that are hard to imagine from its size. This is an improved model that disregards the cost of mass-produced units, using expensive parts extensively to achieve even higher 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, overcoming the common issue of the sound being too quiet with aftermarket Bluetooth. Please enjoy the high-quality sound and smooth operation of this well-maintained unit. ・ Electrolytic capacitors in the audio signal circuit have been replaced with Rubicon film capacitors, which are more suitable for audio, and high-grade Nichicon audio-grade components (FG, UFW, KZ MUSE). ・ Power supply circuit capacitors have been replaced with higher-grade Nichicon capacitors than the original. ・ Electrolytic capacitors in the heat-generating parts of the control board have been replaced with Murata Manufacturing MLCC, which has a longer lifespan, lower internal resistance, and less loss. ・ All capacitors are measured and selected before replacing parts. ・ Replacing parts alone can cause unnecessary load and unstable operation due to electrical characteristics, so replacements are carried out while sequentially inspecting the characteristics. ■ Effects The sound quality, information content, and resolution across the entire range are "significantly improved" to a level that is clearly noticeable. ・ The low frequencies now have a clearer outline. ・ The mid frequencies have increased depth and richness, allowing you to clearly feel even the breath of the vocals. ・ The high frequencies have noticeably increased resolution, and the sharpness and decay of attack sounds like snares and toms are smoother. Even those who are not very interested in audio will definitely notice the difference. ■ The following work has been completed ・ Replacement of all electrolytic capacitors ・ Built-in Bluetooth & sound pressure level adjustment ・ Cleaning & greasing of the entire CD unit. Rubber belt replacement. Waveform inspection, output adjustment ・ All motor operation checks ・ Spindle motor internal cleaning, oiling ・ Cleaning and conductivity improvement treatment of all terminals and connector contacts ・ Power IC grease removal, thermal pad conversion & re-soldering ・ Exterior repair painting ・ GND insulation circuit added ・ Many others ■ Appearance ・ Since this is a repaired exterior paint product, please consider carefully if you are concerned. Matte paint is applied after a low-yield flat processing to improve the texture. ■ Shipping Contents ・ Main unit ・ Main unit & BT instruction manual (printed) ・ Catalog (printed) ・ Acrylic stand (with scratches) ・ White power cord ・ Remote control ・ Removed parts ■ Warranty Complete free support for any problems that occur within one month of arrival. 【4541】