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Tag Archives: allnic l-8000

Allnic Audio T-2000 30th Anniversary Integrated Amplifier | REVIEW

You know how I used to start off each of my integrated amplifier reviews with an opening paragraph on why I love integrated amplifiers? Yes, I made a promise not to do that ever again, […]

Allnic Audio L-8000 DHT Preamplifier | REVIEW

DHT is a magic three-letter acronym that speaks volumes to those in the know, especially when it comes to audio history and tubes. Before I get to the product at hand, the mysterious and magical Allnic Audio L-8000 DHT preamp, I’d like to take a moment to spotlight some of the acronyms behind this review.  DHTs, as mentioned above, stands for Directly Heated Triodes, which are the very first tube type to have been invented. They are simply an anode, cathode and grid in a vacuum sealed glass bottle. Pretty straightforward, but what might convince an engineer to return to this earliest and apparently crudest of signal amplification technologies? One of the keys lies in their distortion curves and output profiles.  Generally speaking, DHTs have lower outputs than the more modern tube types. Triodes are generally less efficient, however because of their extremely simple designs and the absence of any grid-current draw they can achieve incredibly pleasing sounding distortion transfer curves and do so with a very simply pathway for electrons to pass. Gain relationships in DHT output tubes are modest, and this often means the need for massive feedback to achieve linearity is lower than with the high power […]

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