I am selling my Feliks Audio Elise in order to explore different ventures in my audio chain. The Elise was bought in December 2016 (therefore not the 'upgraded' 2017 version) and it's still got 2+ years in warranty. Original box and documentation included. Stock configuration includes the "upgraded" Psvane UK 6sn7 HiFi series driver tubes, and the Svetlana 6N13S power tubes. Being an OTL amp, every other different tube combination brings something new to the table, and therefore it's a perfect testbed for tube rolling. It is also arguably (i.e. technically but also audibly) an excellent match for the HD600/650/6xx. According to @Marvey, it "[m]ost definitely has the SuperBAF Seal of Approval". I'm actually selling because I feel my system has reached a summit and now I'm looking to finance better and more expensive things. Hand built in Poland. #EDIT: My Elise is back from its health checkup in Poland with fresh internals! Here's what's changed in the words of Lukasz Feliks: Paid another €120 for shipping back and forth (plus FA was kind enough not to charge me with the four new tube sockets plus labor—would have been an additional €50-60!) so I'm raising the price just a bit to make some of that money back; plus the Elise is now like new (ok, refurbished, but still...)! Selling options are as follows: the Elise without any tubes. Looking for €520. the Elise with 'upgraded' stock configuration tubes. Looking for €610. the Elise with an "all-you'll-ever-need" set of premium tubes, consisting of the 'upgraded' stock configuration plus Pair of GEC 6080 power tubes. Bought measuring NOS (seller's measurements). Pair of Sylvania 6sn7w driver tubes. Bought measuring NOS (seller's measurements). Pair of Sylvania VT-231 / 6sn7gt driver tubes. Bought measuring NOS (seller's measurements). Pair of Ken-Rad VT-231 / 6sn7gt staggered plates driver tubes. Bought measuring very good (seller's measurements). Will throw in three RCA and one GE 6080 power tubes for free as a gift. Bought untested but working fine. Pay me €1000 for the lot, and save yourselves from 3x times the expenses in experimenting. Finally, for a cool €1100 you can have my trusty Sennheiser HD600 and get yourselves a fully blown system that trumps the competition in its price range all at once. HD600 now gone to Budapest, happy listening! Quoting @Marvey, >>> If you're also looking for a source, please consider my other ad for the Modi Multibit plus Eitr. Schiit stack gone, happy listening! Based in Athens, Greece; local audition and pickup available (actually preferred); Local pickup w/ cash, bank transfer, PayPal option available (buyer pays shipping and PayPal fees). This is a 230V EU version. Here are some visuals of the mentioned gear: 1. Stock configuration with "upgrade" Psvane UK 6sn7 HiFi drivers. 2. This is my preferred combo: the powerful and rare GEC 6080 with the incredible Sylvania 6sn7w. At this point the system has picked the interest of audiophile friends with Summit-fi gear. The Ken-Rad have been added very recently and they bring even more to the mix. 3. "Gift" quad: three RCA 6080 and one GE6080. Some consider them as a great VFM. 4. The Elise, along with the Eitr / Modi Multibit stack.