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Aug 31, 2013
Mine arrived today in this blasted hot weather. So far I am very very impressed with how much the tubes I got off Ebay and how this amplifier changed the HD650 sound signature. It's no longer laid back and what I'd like to call "lifeless" at times for some music. It's faster, punchier but not too much bloated punch, and ohh my goodness the vocals. It's just brimming with life, and especially with the background vocals. That was my brief impressions with the brief amount of time I had to listen. Definitely a worthy purchase around the $220 mark for a headphone tube amplifier.<br /><br />If anyone is curious about the tubes, I am using it with a Chatham Electronic JAN CAHG 6AS7G and Sylvania 6SN7WGT brown base with black plates and halo getter. For the holy grail it seems to be the Tung-Sol 5998 and Tung-Sol 6SN7GT Black Glass with round plates, but you better prepare to spend maybe about $200+ for those as they are very rare in this day and age.
Aug 31, 2013
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