WebJan 22, 2024 · The TIII is a differential hybrid parafeed headphone amplifier which I don't think I'd characterize as particularly "lush" but it is revealing with great extension at both ends of the spectrum. Of course, this is going to be tube dependant. WebNone of my other tube amps - 2A3 Moondogs, WE91 300B monos / top level kit version from DIY Hifi Supply or my pimped Dynaco ST70 (Welborne Labs upgrade kit) - come even close to what this transformer coupled tungsten filament 801A is capable of. OK, especially the Dynaco and also the WE91 amps deliver more powerful bass with the above-mentioned ...
John Tucker/Doc Bottlehead UX-45 Parafeed Direct-coupled SE …
WebSep 6, 2024 · Here is the schematic, although it is not comprehensive. Parafeed capacitance was determined experimentally by taking FR sweeps of various capacitances (courtesy of cheap Solen caps), along with subjective listening impressions. Ultimately decided on 6.6uF made up of two 3.3uF in parallel. Bias points: 6J5 B+: 380V 6J5 plate to cathode: 200V WebDec 6, 2016 · Wow, Total cost for BOM including tubes comes to $150. Very zen-like! If building an OTL like Crack, only the output caps alone will be worth $100 and it will still sound worse than this amp. Thanks for sharing your design. This amp can be a giant killer if a proper CCS and a more refined HV power supply are installed. top 10 countries with aids
The 2A3 Tube Amplifier - A Tribute to Simplicity and Warm Sound
WebOct 31, 2013 · The Marantz 4100 is equipped with Tuner and MM phono inputs, Aux/CD-4 input plus two 2 of 4 channel tape monitors. Two channel sources can be decoded into 4 … WebJan 5, 2009 · EF86 driver and EL84 output Parafeed Tube Amplifier. Uses a 230V primary, 9V secondary Talema 30VA mains toroidal transformer as the audio output transformer (OPT). For more details and a schematic, see the EF86 / EL84 Parafeed ampthread. DIY Tube Projects:: DIY Tube Amp Kits:: DIY Speaker Projects:: DIY Solid State Projects:: WebI had the resources to build said amps when living in Utah in the mid 2000s at the time when I acquired all the parts. A full set of Tribute iron for a 45 driving an 845 with parafeed driver and output, four double 'C' core per side and custom Heyboer power transformers for two PS per side, one for the driver and one for the output. top 10 countries with covid cases