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 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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6E5P SE, 6n1p driver, MAZE OPT's in a scrappy chassis for testings

This is one of my latest audio tube DIY projects made in a scrappy chassis for breadboard use and measurements. I 'll transfer it to a nice wooden chassis now for sure.
The tube in output is the russian HF tetrode 6E5P, with max anode dissipation 8.5 Watts. It's a hell of a driver together with a CCS or Choke loaded solution. The driver is a classic ground cathode with the 6n1p for both channels. The 6n1p cathodes are not cap bypassed so the gain in this operating point is ~ 8. This is what exactly needed to drive the 6E5P in full output without the use of a preamp. The PSU is a tube type one using the Sovtek 5AR4. All the PSU caps are MKP (Mcap by Mundorf 100μF/400v.
By the way there is no Electrolytic cap in this Frankie amp. The cathode bypass cap on the 6E5P stage (output) is also MKP by Solen 82μF/250V. The coupling cap from driver to 6E5P grids is RC type using the marvelous 0.22/1000V PIO K40Y Russian caps. The OPTS are a bit over sized with 5K primary impedance made by mazeboutique.com.

IMG_3498.jpg DIY-12AU7-Cathode-Follower-Preamp.JPG 6E5P_SE_6n1p_driver-_maze_OPTS.jpg K281FrontS.jpg 6T9-SE-Tube-Amp-Kit.jpg
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Album name:Vacuum Tube (Valve) Audio Projects
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Date added:Sep 01, 2008
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