Also if you're going for a Woo Audio amp and the HD650s, you're going to want to go for the WA3, its a better match for the high impedance of the HD650s.   I went from HD595s as my first decent headphones to HD650s, GREAT value upgrade even when I was just using an AV receiver as the amp.

I've tried them off an iPhone 3GS and they sound very ordinary, the HD595s were great off the iPhone, and put them to shame, but run them off a moderately priced second hand AV receiver with a decent headphone output stage, and they're rather excellent.  So while you don't need an expensive amp...

Quote: Frankly even at $350 they're not a good deal, an Orient new, or a TAG used, even a vintage Omega can be had for that.  Amazon's $1200 off caper is just a complete load =\  

The 2500B also turned out to have issues, so the 2500C was released, which lowered the beat rate from 28,800 to 25,200 BPH.  These were almost perfected but then in the last few months a final 2500D was released.  The Cal 8500 should likely replace nearly all 2500 series movements soon anyway...

I used a Denon AVR-1601 which is worth about $50 used these days, and it performed quite well.  Vintage and/or just generally good AV receivers can run HD650s well, some don't, like my other two Yamaha modern receivers.

Its a late 1990's Denon avr-1601, but I'm not sure how it would rate, did a quick search and found:     http://www.head-fi.org/forum/thread/9414/denon-avr-1601-headphone-jack     http://www.head-fi.org/forum/thread/148252/dedicated-headphone-amp-vs-ht-receiver-amp   Not sure...

Just got my HD650's today (used few years old), running FLAC tracks through a Xonar D2X -> 12 year old Denon AV receiver -> HD650   Staggering improvement over the HD595s, just night and day.  So much more comfortable, so much more bass and lower mid range.  I was expecting the Denon AV...

ok, thanks!   Quote:  

The 12AU7s 12AX7s are only a handful Mullards, but predominantly AWV (Amalgamated Wireless Valve) which seams from wikipedia to be an alliance between RCA and AWA that produced valves here in Australia, not sure if that makes them the same as RCA, or if they'd be different as they do have "made...

I hope they've improved the durability of them over the 595s, the ear pads were comfortable but had to be replaced every two years of use.  

I'm on about my 6th Netgear with terrible results, at work our Belkin is having problems, and I've got a dead D-Link as well.  Not really sure where you'd go to find a good one anymore, they're probably all coming out of the same factories anyway.

BMW Glashutte Original A. Lange & Sohne Autobahn craftsmanship aggressive driving (bavaria) Seriousness

Hi, I've been reading into getting a tube amplifier for a pair of HD650s I've ordered and had almost settled on a Woo Audio 3, but I've been reading up on tube options, as inevitably everyone seams to start buying more and more as they get deeper into it.  Rather than ordering online I asked...

Have a few others, but my favorite at the moment is a vintage 1979 Rolex Submariner with original faded "ghost" bezel, other watches just sit in the box.  

Hi, just ordered my set of HD650s after many years of faithful service from my now retiring HD595s, I'm looking at ordering a WooAudio WA3 to replace the 1990s Denon AV receiver I currently use to power the HD595s, but I run analog currently from a Xonar D2X to the Denon, as the DACs in it are...