I have a Node 2 and a Node 2i in separate systems. The sound quality in both systems is better with a wired ethernet connection.
The Node 2i is in my AV system. I recently started using a fiber ethernet converter to convert the ethernet to fiber which is then connected optically to a Uptone Audio EtherREGEN. The Node 2i and an Ultra Roku are connected to the EtherREGEN. A further improvement to the SQ of the Node 2i and sound and picture quality of the Roku.
The Node 2i is in my AV system. I recently started using a fiber ethernet converter to convert the ethernet to fiber which is then connected optically to a Uptone Audio EtherREGEN. The Node 2i and an Ultra Roku are connected to the EtherREGEN. A further improvement to the SQ of the Node 2i and sound and picture quality of the Roku.