Hi Anthony, I have finished the modification and it's magic ... the speakers never sing like that (focal elektra 1027 be) the sound image is open, soft and very precise, all the little details are there, nothing is aggressive and the bass is firm, just punchy. these amps give me chills, the musicians are in my living room and I rediscover my music! Anthony you are a music magician. thank you for your presence and your work. Merci beaucoup ,portez vous bien vous et votre famille au plaisir Christophe Henri ,  saint michel sur orge France    

  I recently purchased one of Holton Audio’s  One-Zero-Zero Supreme power amplifiers that I had been keeping an eye on for some time now and very glad I did. I’m not a sit down and take notes type of  bloke, but paired with my Osbourne Epitome loudspeakers, a whole new level of sound has opened up. Sounds like I’ve moved the speakers further apart but they are still in the same spot, not sure how that works. Hearing a lot of small details in my favourite tracks that weren’t there before, and a lot of extra punch in the bass, many apologies to the neighbours.  I will have to revisit my music collection now to see what I’ve missed. Will be an enjoyable chore. Anthony was a pleasure to deal with, and I can’t recommend this little marvel of an amp highly enough. Troy P Victoria, Australia

Hi Anthony  Thought I would let you know how your amp is going. Received the One Zero Zero Supreme and have been very happy with what I’m hearing, straight out of the box it sounded much much better than my 100w Rogue Hydra Pwr amp and 150W Consonance pwr amp, both of which get very good reviews, now after about 30 hours of use its sounding incredible. Soundstage which already was deep and wide has grown and also projects forward more now as well, Bass has more impact and depth,  also transparency and detail has increase dramatically. I have owned some very good amps over the years including Tom Evans SET amps,  Audio Aero Capitole and Stereo Knight monoblocks, I can comfortably say your amp not only competes with these great valve amps but in areas like bass and detail it surpasses them,  I’m sure as the amp gets more...