As I was a very late comer to this forum and the 6005 diy amp thread created by Jeff Medwin was closed for comments, I hope you guys don’t mind me sharing my findings on the 6005 amp here !
Audition of 6005 Power Amplifier - Subjective Opinions
Background
Being an audiophile for over 40 years in Hong Kong, I consider myself very fortunate in the sense that I have full access to almost ALL successful high-end audio products, all within an 88 square kilometres area ! Years ago I stumbled into one of Jeff Medwin's Audio Forum articles, my understanding of Jeff’s overall design direction “ less is more, shortest signal path, small output amplification and high efficient speaker system ” matches mine tightly. Hence I was exceedingly curious in finding out the end result, sound quality, of his design and implementation. Here I’m running his 6005 power amp in my setup (details below) for the 3rd week, despite some components in the 6005 amp may not be totally run-in, I would like to share my subjective views, based on my audio approach above, on Jeff’s 6005 creation.
Soundstage reproduction - gigantic soundstage extended well beyond the four walls of my very small (120 sq feet) size listening room is just breath-taking, never happening to my system in my 40+ years of audio life.
Low level information reproduction - tracks after tracks, be that musical instrument or vocals, low level details reproduction, which in my opinion, is critical for reproducing emotional contents, is stunning to say the least, again this level of reproduction set a substantially higher record in my system.
Lightening speed & huge dynamic music contents reproduction - Every day in the past 2 weeks I was stunned, without exception, by the speed of not only the top end, but the full frequency spectrum of music contents, this is what I consider crucial for life-like music reproduction.
Dead quietness - there were many technical discussions on Jeff’s unconventional designs on power supply, biasing etc., which is beyond my ability to fully understand, but the fact is, to my ears and to the Beauhorn 104 db brutal revealing efficiency, the 6005 amp is DEAD QUIET
Emotional music contents reproduction - There will be little disputes that emotional contents is one of the most critical elements of music reproduction, in my experience all of the above elements, soundstage, low level information, speed & dynamic and low noise floor are all critical for reproducing the most important element of “EMOTION” for music, needless to say this is another champ coming out from the 6005 amp !
Unconventional rare piece
There is a saying: different horses for different course, you may have different kinds of opinions on the 6005 amp if you have a chance to audition, nevertheless, I see Jeff’s 6005 amp is an excellent example, at least to me, of a piece of stunning, perhaps, unconventional rare piece of hardware, which provides a super structure for music signal to travel through with the least hinderance overall. The fascinating aspect of our hobby of music reproduction is, we all can then utilitse this piece of valuable hardware to reproduce music we want by tuning it to your likings!
I would like to thank Hifivision for providing this platform and all the people who contributed to this thread and particularly, millions of thanks to Mr. Jeff Medwin. Please keep on sharing your joys, experiences and findings, good or bad, in the world of music reproduction and DIY.
My System
My current power amp setup : PassLab SIT 3, 15W transistor amp, DIY 437A interstage 300B, 7 Watts monoblock power amp, primary source, digital source from my AMD music server running 16+16 cores CPU with FULL linear power supply rails to the mobo, running Windows 11 PE (pre-installation edition) OS of total size of only less than 10% of normal Windows 11, all running in RAM and only playing internal files stored in SLC SSDs; Other sources : Strain gauge phono system; 15 IPS tape system, Studer C37; Passive preamp, LDR DIY module; Beauhorn speakers with no cross-over, 104 db efficiency
.
