The other basic amplifying structure is referred to as differential (or push-pull). In this type of circuit structure, we usually have two important voltage references: the signal itself and ground. In a single-ended amplifier, the signal always remains whole and is handled in its entirety by the amplifying devices (tubes or transistors). One basic amplifier circuit structure is referred to as single-ended. In fact, the HeadRoom Blockhead balanced headphone amplifier was introduced way back in 1999.Īll amplifiers follow one of two basic circuit structures related to how they treat signals and grounds: single-ended or differential. While once the purview of ultra-high-end or professional equipment, balanced connections have recently found their way to lower-priced consumer products. The inexpensive Little Bear B4-X portable vacuum tube headphone amplifier featuring both single-ended and balanced headphone outputs, but only an unbalanced input. However, it is becoming much more common for manufacturers to also include separate balanced headphone connections on their devices. Think of that round ¼” headphone jack on your stereo or the 3.5mm socket on your (non-i) phone.
Ī typical headphone source ( amplifier, DAP, etc.) supports an unbalanced headphone connection. Getting the best sound from your headphone setup can be a balancing act, but does it have to be? A variety of outputs on a Bryston BHA-1 headphone amplifier include single-ended, dual 3-pin XLR balanced and 4-pin XLR balanced from.
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