Both socket will enhance the detail and dynamics of DA-131.1, but both enhance in a different way.
GU-R301 Gold plated 99.99% pure copper IEC socket not only enhance the details and dynamics, it also makes DA-131.1 sound warm and smooth, the high quality proccessing done on GU-R301's gold plating process also makes it sound more refined and all without losing a bit of the details (Well, it actually enhances the details when compared to the original computer grade socket). GU-R301 is warmer sounding than AG-R301, if you are looking for warmer sound signature with more flair, please choose GU-R301 over AG-R301.
AG-R301 99.99% pure silver IEC socket will enhance dyanmics and detail even further than GU-R301, and as with very high quality silver, the sound is smooth, detailed and quite neutral. It does not have the "silver harshness" normally assoicated with low grade silver or thinly plated silver cable and connectors, high quality silver sounds smooth, with proper thickness, very detailed and open. AG-R301 is neutral sounding and more detailed with better dynamics than GU-R301, if you are looking for that, please choose AG-R301 over GU-R301. Please note that while GU-R301 is warmer, AG-R301 is by no means cold, it is very neutral.
大概看了一下，da-151跟da-131 都進化為MK2的版本了，還可以加錢來昇級電源插座，有純銅跟純銀兩種，
純銅插座不僅昇級細節表現及衝擊力，也讓131.1的聲音溫暖柔順。高品質鍍金處理讓音質更為純淨並保有所有音樂細節。
純銀插座在強化細節表現及衝擊感上更勝純銅插座，音色滑順、解析佳並且十分中性。高純度銀材聲音滑順，有相當的聲音厚度，細節表現、解析度極佳，音場開闊。相較於純銅插座的暖聲底，純銀插座絕不會是偏堅冷音色的走向，而是非常中性的表現。
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昇級電源線插槽竟能影響音質這麼多，不曉得有沒有網兄入手過昇級版的呢? 或是分享一下器材昇級電源線插槽的心得，呃...記得電源討論區有很多分享了，那就keces 的用家來討論一下唄
