I'm not terribly adept at circuit design.  I can read a schematic, but topology is not my forte.  This is an amp currently offered on eBay.  I'm sure some here have seen it.  I'd like to get some of your thoughts about it.  

Does anyone have any experience with or knowledge of this piece? It's offered as a kit, a partial kit, and/or a complete build. http://www.ebay.com/itm/110669245109?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 I don't know the topology, or if there are counterfeit parts, etc. However...

I recently bought a Sony D-25S, a NOS. I did it based on the many glowing recommendations of the machine that I've read here and other places online. I do recall the sound of the early iterations (roughly second generation) of CD players, and they, as a rule, were not that good. However, if I...

I am listening now! My early impressions? Build Quality: Very nice. Very nice! Mine is silver (I thought I'd be different - ahem), and the color and finish (it's a Hammond case) is very Mac-like. Quality switches, solid and smooth action. The volume pot is smooth and quiet, and the knob...

The title said it all. I'm "interviewing" for an amp/DAC combo piece with S/PDIF (optical) to use with my iRiver H140. I am interested in the Leckerton UHA-6S and the iBasso D10. I'm looking for top drawer sound (or right up there), and it would be nice if it had the synergy with the ER-4S's...

miketn was kind enough to loan me his Minibox E+ and his RSA Tomahawk for a few days to help me draw some amp comparisons for a future purchase. He pointed out that the MiniBox was voiced for the Etymotic ER-4S's, and it would surprise me. He warned me that it was new, not burned in, and it...

Any thoughts on value of one over the other, build quality, SQ, D to A conversion, support, etc? Thanks in advance! ~~~~Sara

Would those in the know care to post such a list of the CURRENT (meaning you can actually buy one, unlike the iRiver H120/H140) players offering a digital out? Many in-advance thanks! ~~~~Sara

I'm going to Bangkok in March and I intend to do some shopping for things other than clothes. Is anyone familiar with the city and with the "electronics malls" that are there? If you are, do they sell headphone amps - name brands, made in the Far East, that would be "well priced"? Thanks in...

Hi, all! I am new here. I'm sure my question is buried on this forum somewhere, but frankly I'm tired of digging. So, I thought I'd ask a multi-tiered question. I have a pair of Etymotic ER-4S (had 'em for YEARS, I use them mainly for monitoring when I do location recordings), but because...