I was recently talking with David from Hammertone Audio, the global distributor for Allnic Audio. David mentioned Allnic Audio is in the process of releasing a headphone amplifier, the HPA5000. It is scheduled to be released soon. David will try and send one to the meet to give the Chicago Head-Fiers a chance to audition there first headphone amplifier. It will be available in black or the silver shown in the photo below. Some information on the design is below the picture. I did have a chance to talk with the designer who was actually visiting Hammertone Audio this weekend. With its optimization for 40-50 ohm headphones and being capable of 5 wpc, if it can make the meet, I look forward to hearing it with some of the great headphones that will be at the meet.
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The HPA5000 could be listed as an OTL and OCL (Output Transformerless and Output Capacitatorless) design. Power output is approximately 5 WPC into a 40 to 50 Ohm impedance. The tubes in each channel (1) 6AN8 (1) E180CC (2) 7233. Voltage gain is +24dB. This amounts to a pure tube design possessing 2 pairs of RCA inputs and one 1/4" headphone jack output. The gain attenuator is Allnic designed and built 41 silver stepped.
Edited by Audio Addict - 5/11/12 at 3:24pm