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一般的 pCP8 版本并无树莓派 4B 内建无线网卡的驱动,因此音质方面的效果是最好的,而 pCP8 WiFi 就是增加了那驱动的版本,当然对音质有些影响。
pCP8 Player eMMC 主要是是用来跑 Squeezelite 的网桥,没有 NFS 和 CIFS/Samba 就不可以连接 NAS,当然也没有 LMS 的服务器软件。
(通常是第一台树莓派 4B 跑 NAS 系统的 OpenMediaVault,第二台跑 LMS 的服务器,第三台跑 Squeezelite 的网桥。)
19 楼已经说明 eMMC 那部分有什么好处:
http://erji.net/forum.php?mod=viewthread&tid=2234081&page=1#pid33930738d
那乐友使用的三个外壳是都是这一款:
https://www.my-hiend.com/vbb/showthread.php?13157-piCorePlayer6-1-0-Xenomai-44-1-48KHz雙機入門簡易安裝教學/page30&p=243512#post243512
最近日本音响BLOG主帮他Player的树莓派4换上了全铜制的外壳,换上后他说声音更厚重、音场更大、背景更安静了。
https://desalvoinc.com/products/solid-copper-maker-block-case-for-raspberry-pi-4
虽然树莓派4售价只要50美金左右而这个全铜制的外壳售价高达250美金。但是他觉得这个价钱能够让声音提升这么多简直是超值,
所以他又马上下单买了2个回来给LMS和OMV来使用。根据他的说法3台树莓派4都使用全铜外壳后,在声音提升的效益并没有递减
反而是x3。他的BLOG的读者已经有好几位也跟进购买全铜外壳回来使用,目前使用过的人都觉得这个外壳对声音的提升相当的超值。
虽然这个全铜外壳250美金的售价相当的昂贵,不过使用过的人反应都相当的好所以小弟提供情报出来给大家当作个参考。 FB 那边的评价:
As an experiment, this case came from the US.
C110 copper, 785g!!!
Although it is our policy not to mention anything about sound quality, the difference from a normal aluminium case is so huge! Our previous post in February about this case might have accelerated its sales. This model has been indicated as "sold out" since March.
Now it is available again with a new engraving design for the same price.
Those of you who have purchased the Diretta Target USB bridge for x64 version and tried to run it on the Raspberry Pi 4B may have been impressed far less by its sound compared with the x64 PC.
This is understandable if you use a "normal" case.
Importing this copper case from the US causes huge additional cost, but you will not regret once you have experienced its sound.
实际上只要人多势众就可以把价格降到十分低,某宝的 CNC 店铺同样可以利用这两个设计图制作 C110 纯铜外壳,但是总人数太少的话还是洗洗睡吧:
https://www.barchdesigns.com/STEPfiles/RPI%204%20Standard%20Case%20Top%20(version%207-28-2019).step
https://www.barchdesigns.com/STEPfiles/RPI%204%20Standard%20Case%20Bottom%20(version%207-28-2019).step
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