The AHA-120 is a transportable pure class A headphone amplifier, suited to driving most full size headphones and IEMs.
Intended for the most discerning listener, the AHA-120 incorporates a discrete class A output stage, ensuring zero crossover distortion; Whilst the front panel features an additional high quality NKK rotary selector, allowing the end user to tailor the amount of class A bias to suit a given pair of headphones. For instance, with 600 ohm headphones the least amount of bias can be used, therefore operation time is extended considerably. Of course, the chosen internal rechargeable battery not only has excellent characteristics for audio, but is big in capacity, enabling up to 18 hours of operation time when using the maximum class A bias setting.
Like the µHA-120, micro jumpers are fitted to the PCB as standard, so that the AHA-120 can be configured to either 6dB (x2) or 12dB (x4) maximum gain to suit headphones and IEMs. In addition, the same careful attention has been placed on the layout and choice of the electronic components, with particular emphasis on ensuring the very best audio quality and excellent immunity from unwanted noise sources.
As standard the stereo analog volume potentiometer is a specially in-house graded and modified part. This process involves only selecting parts with the best channel balance and then applying our ‘White Velvet’ modification, creating a near perfect passive analog volume control with a premium smooth and consistently weighted rotary movement.