希望有balanced耳機的同好, 不管是用專用balanced headphone amp, 用前級或dac/cdp等,
或者是已有平衡訊源, 想試試平衡式耳機者, 都可互相討論...
真希望音X,品X進一些Balanced amp, 如HeadRoom Balanced Desktop Amp, RSA的Apache等
平衡式耳機的原理可參考以下:
http://www.6moons.com/audioreviews/bala ... s/one.html
簡述如下:
* 一般耳機 * 6.3/3.5的端子(非平衡): 1.左聲道V+ 2.右聲道V+ 3.ground
=> 接到耳機單體, 左聲道的+-是上述的1&3, 右聲道的+-是上述的2&3, 共用一個接地
* 平衡耳機 * 兩個XLR平衡端子: 左聲道:V+,V-,ground 右聲道:V+,V-,ground
=> 接到耳機單體, 左聲道的+-是上述L的V+&V-, 右聲道的+-是上述R的V+&V-, XLR接地端子不接
這裡有列到平衡耳機的優點, 參考看看就好,
主要是電壓擺幅加倍(V+/0 => V+/V-, 代表更好的驅動力), 沒有共用的接地(有助降低串音,提高SNR)等優點,
一般評價是音場大, 動態及低音控制力好很多(tight bass)...
"The immediate benefit of such a design is that each amplifier only drives half of the coil allowing for a much better control of that coil. It also doubles the effective slew rate (the voltage an amp can swing per second) as both amplifiers are operating in opposite phase to increase the dynamic realism of the music reproduced. Such a design can get fairly difficult to implement with all discrete transistors as they require careful manual matching to ensure that both halves of the signal are amplified identically but integrated chips do remedy this in a fairly elegant and cost effective fashion, allowing entry-level balanced amps to remain quite accessible. If the theory of balanced headphones seems all rosy, there are a few hurdles you need to be aware of. They all relate to the implementation of a balanced headphone system from start to finish."
我是剛收到Equinox Balanced HD650 cable二天,
接在Apogee Mini-DAC的XLR pre out上,
初步聽感是清晰(去了一層紗), 低音密實一些(這裡還有進步空間), 空間感及定位很好(這點最明顯), 音樂形體變的很大, 樂器分離度佳及位置很清楚, 好像換了一隻耳機...
很好奇再接上balanced headphone amp後會進步多少...但台灣好像沒地方可試聽...
難得打了這麼多字, 很希望有balanced耳機的同好可互相交流交流...
