Gieseler Audio Posted June 29, 2018 Share Posted June 29, 2018 (edited) SOLD Location: Gold Coast Price: $1850 includes Australia wide courier delivery Item Condition: Ex Demo Reason for selling: No longer required Payment Method: Pickup - Cash, Direct deposit Extra Info: GIESELER KONVERTER DAC original tube version First a bit of background on the Konverter. The whole design was a big step up & a lot later than my previous PDX designs. Hiface USB board replaced with Amanero USB (as used in Gross) Digital board - a completely newer design with better parts & layout. The Konverter also has a optical LDR shunt remote control volume system - using my own remote board see photos. Also uses same remote control as the Gross This worked & sounded much better than the previous PDX design which was based on a brought in remote kit & used the LDR's in a standard pot setup. Relay muting for silent switch on/off. Single tube output stage using a hybrid mu follower design. This also has auto bias so great for trying different tubes. Fitted tube is a Genalex Gold Lion E88CC. Remote function is very basic being volume up or down. There are two digital inputs. Async USB using the Amanero Combo384 board. Coax using a Wolfson WM8804 Build date was mid 2014 The Konverter was never actually released so this is the only one. The parts spec was very high - Jensen 47 + 47 500v main ht filter cap. Cree SIC diodes for ht rectification. Audio note tantalum resisters for IV on the 2 x PCM1704K DAC chips. Nichicon KX pre HT filtering. Elna Silmic caps used for DAC decoupling & Nichicon fine Gold for DAC PSU. Munndorf M Cap Supreme silver gold oil coupling caps. Superb Duelund VSF output capacitors. This model would have been about $6k The faceplate is rear engraved 10mm acrylic & was intended to be rear illuminated. See original Stereonet release night in Melbourne. https://www.stereo.net.au/news/gieseler-goes-it-alone The price of $1850 is well below parts cost alone so this is being sold on a "as is" basis. However I will provide a fourteen day warranty (RTB) so everything can be confirmed as working Ok. This unit has never been sold & only used for demo purposes. It has been thoroughly tested & checks out fine. Delivery is included in the price & will be via courier. Sorry about the photo orientation - SNA add editor has a mind of its own!!! Now fixed! Pictures: Item: Edited July 25, 2018 by Gieseler Audio Price reduction 5 Link to comment Share on other sites More sharing options...
Cookies Posted July 2, 2018 Share Posted July 2, 2018 Have one similar to this, a PDX DAC with Konvertor tube output stage. It's a really good DAC, that makes a Yggy sound digital in comparison. Can only imagine how good this will sound! 1 Link to comment Share on other sites More sharing options...
Mike13 Posted July 2, 2018 Share Posted July 2, 2018 Clay is this DAC from Klein 2? Assume it’s not Grob. Link to comment Share on other sites More sharing options...
Gieseler Audio Posted July 2, 2018 Author Share Posted July 2, 2018 Hi Mike, no this Is based on Burr-Brown PCM1704k DAC chips which are multibit R2R. All the Klein DAC’s & the Gross DAC use delta-sigma style chips which are very different. Link to comment Share on other sites More sharing options...
PKay Posted July 2, 2018 Share Posted July 2, 2018 39 minutes ago, Gieseler Audio said: Hi Mike, no this Is based on Burr-Brown PCM1704k DAC chips which are multibit R2R. All the Klein DAC’s & the Gross DAC use delta-sigma style chips which are very different. @georgehifi another dac with 1704 chips Link to comment Share on other sites More sharing options...
Guest scumbag Posted July 25, 2018 Share Posted July 25, 2018 Clay what varients of tubes can this work with. I assume 6922 and 7dj8 but can you run 12au7 for instance? Link to comment Share on other sites More sharing options...
Gieseler Audio Posted July 25, 2018 Author Share Posted July 25, 2018 (edited) Hi Mark, ok 6922 series ECC88 E88CC 6DJ8 PCC88/7DJ8 No not 12AU7 series which have very different characteristics. Heater voltage is regulated & auto bias so great for easy swapping of tubes. Also price reduction to $1850 Edited July 25, 2018 by Gieseler Audio Link to comment Share on other sites More sharing options...
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