Monoprice SSVC-4.1 Single Input 4-Channel Speaker Selector with Volume Control, Impedance Protection, Individual Zone On/Off Buttons, Black, Model Number: 138159

muy bueno y practico

This item was a Amazon repack. The box was beaten but the the unit was flawless and worked as it should. It was a pain adding wires for four pairs of speakers into the L & R output on the back of my amp. This device not only cleaned up the mess at the back of my amp for the speaker connections, it has volume and on/off control for each channel. I do believe the sound output in each room has improved as well. I was concerned about the impedance matching and it was a non issue. I continue to use my my impedance matching volume controls on the wall in each room, now set to 1 pair and not 4 pairs of speakers. Don’t really need the controls in each room now but they fill the hole in the wall.

音が出るまで苦労しました。この商品の特性として、セレクターで抵抗が増加するためセレクター側はボリュームを目一杯回したものに対しアンプは最小のボリュームから調整する。1組のスピーカーをつないで確認するのがポイントです。海外製ですが、同時出力できて複合インピーダンスの調整ができるので購入しました。 確かに日本版マニュアルにもセレクター側はボリュームをマックスと書いてありました。

Unit worked perfectly and produced good sound without external power supply requirement.

A straight forward product that switches speaker pairs on and off, and controls volume of each pair. Quietly and effortlessly. Also comes in different configurations to control a few speaker pairs, or many. Has substantial heft and feels well made.