Like many folks lurking here, I am looking for a decent headphone amp. I don't really want to spend $800 or $1K to join the SinglePower gang, but the $470 WooAudio 3 looks pretty reasonable and inviting. I have searched the archives and found very few posts from actual owners. If you own one of...

Have there been production changes to the HD600 model over the years? If you saw a mint used pair, would you be able to tell whether they were new or old? Do newer sound better than an older version (not including break in) ? How about the box... will that tell you the vintage or has that always...

After reading some knowledgeable material here from mkmelt on vintage Marantz equipment as a headphone amp, I went ahead and bought a model 1060 off eBay. I paid a little in the upper range, but the unit was listed in super condition and also had the wooden case with it, also in "gorgeous"...