★ This is an improved model that disregards the cost of the mass-produced machine and uses expensive parts extensively to achieve higher sound quality and reduce the failure rate. ・ Electrolytic capacitors in the audio signal circuit have been replaced with Rubicon film capacitors, Nichicon high-grade audio grade components (FG, KZ MUSE, KW), which are more suitable for audio. ・ The main capacitors in the power supply section have been replaced with Elna high-grade electrolytic capacitors. ・ Electrolytic capacitors in the heat-generating parts of the control board have been replaced with Murata Manufacturing MLCC & Kyocera tantalum capacitors, which have a longer lifespan, lower internal resistance, and less loss. ・ Electrolytic capacitors in the control board signal circuit have been replaced with Nichicon high-grade audio grade components. ・ All components are replaced with parts that are several times more expensive than the original ones. ・ Before replacing the parts, the ESL and ESR of all capacitors were measured, and selected products were used. ・ Because simply replacing parts can lead to unnecessary loads and unstable operation due to electrical characteristics, the characteristics were inspected sequentially during the replacement. ■ Effects A listening test was conducted with the original machine. The sound quality across the entire range is "significantly improved" to a level that can be clearly felt. ・ The low frequencies have more thickness and impact, and the contours are more noticeable. ・ The mid frequencies have more depth and luster, and even the breath of the vocals can be clearly felt. ・ The high frequencies have noticeably increased resolution, and the sharpness, decay, and reverberation of attack sounds such as snares and toms are smoother. Even those who are not very interested in audio will definitely notice the difference. ■ The following work has been done to ensure long-lasting performance ・ System update (compatible with Wide FM) ・ Cleaning and greasing of the entire CD unit. Rubber belt replacement. Waveform inspection and calibration using an oscilloscope. ・ All motor operation checks ・ Spindle motor internal cleaning and lubrication ・ Cleaning and conductivity improvement treatment of all terminals and connector contacts ・ Power IC grease removal, thermal pad replacement, and re-soldering ・ Voltage waveform inspection of the electrical circuit as appropriate ・ Replacement of deteriorated and easily deteriorated parts ・ Preventive replacement of failure-causing parts ・ Interior and exterior cleaning ・ Overall glass coating of the exterior ・ Other multiple items ■ Appearance ・ It is a beautiful item, but please understand that there are some minor scratches. ■ Shipping contents ・ Main unit ・ Acrylic stand ・ Main unit & BT instruction manual (printed) ・ Power cord ・ Remote control ・ Removed parts Shipped via Yamato Transport 100 size ■ Warranty Complete free support for one month from arrival 【4606】 #Bose #wave #music #system #Fully functional #wms #awrccc #awrccb