***UPDATE*** HeadRoom "Triple Stack" & Sennheiser HD 600s

I am going to try to sweeten the deal.  

I am throwing in a vintage pair of Sennheiser
HD600 Headphones. Yes, things cans are old, but they still sound great! They
come with a 10' balanced XLR cable and an upgrade 10' Cardas Headphone Cable. I
recently replaced the headband cushion and ear pads with Dekoni Audio Fenestrated
Sheepskin Ear Pads.  

And just in case you would like to read a review, “At $450, the Sennheiser HD 600 is fairly expensive for a dynamic headphone, although it's far from the costliest available. Yet it deserves to
stand beside any component that inhabits Class A of Stereophile's
"Recommended Components." Read more at https://www.stereophile.com/headphones/408

This was Headroom's ultimate offering at the time. Fully balanced, this package includes a fully functional headphone/preamp, multi-input DAC and separate power supply. Balanced Ultra Headphone Desktop Amp (BUDA) & Ultra Desktop DAC (UDAC). BUDA amp drives one balanced/XLR headphone or two standard headphones. UDAC D-A processor delivers amazingly warm, accurate sound direct from computer USB or digital SPDIF connections. 

Award-winning and versatile. Less than 45 hours and in great condition!  Must be purchased as a set. Will not separate.   Make me an offer I can't refuse... 

“…the audio presentation at all resolutions was handled by the HeadRoom Triple-Stack, as configured, with excellent transparency and quickness. The noise floor was exceptional; no white noise or other nasties, even at very high gain. I would rate the performance with the sources that I used (MA Recordings, HDTracks, Classic Records DAD (96/24) and HDAD (192/24) to be superior, subject only to the problem with 88.2 and 176.4kHz files. Certainly the HD800s were sounding better than the earlier 600 and 650 models that I had heard… much more musical, with richer harmonics, while preserving detail, and providing very fine imaging.”  “Enough said. The final system, as described, was outstanding.”    

“I therefore give the HeadRoom Triple Stack Desktop Reference System, with the Sennheiser HD800 balanced headphones, the Cardas Clear Headphone Cables with Cardas Sennheiser Connectors, the Black Cat S/PDIF coax cable, and JENA Labs power cord and Symphony XLR cables, a 2011 Brutus Award... enthusiastically!”  Positive Feedback ISSUE 58 - November/December 2011 by David W. Robinson https://www.positive-feedback.com/Issue58/brutusdr2.htm
  
I am the second owner. No original literature or boxes. However, the "Triple Stack" will be securely wrapped and packaged to safely ship.