SMD B1K Nutube, brought to perfection, quality of sound follows. This is my second custom iteration of papa Nelson circuit, this time on a very small footprint (board size is 6.5x6.5cm, case size is 15.8x9.2x4.7cm) using best available parts. Jfet buffers are jfe2140, signal capacitors are amazing rubycon mu 4.7uf 35v, filter caps are 1800uf 25v UHW nichicon, vishay dale 5W 270R resistor, metal element 10R 2W resistors, rest of resistors are 0.1% thin film. Nutube is decoupled by custom board and specifically chosen sponges with silicone polimer binder in between. Rubber standoffs to decouple entire board from case, wire to nut gnd. P089ZB custom filter is applied as well, amazing pairing to this little beast (there is enough room for another one if you want to daisy chain). Wiring is upocc copper neotech for signals. Alps potentiometer included, with enough room if you want to put something more niche instead. In the package is included power brick from original nelson kit (you may want to up the game there with meanwell rs-25-24 for aditional few % performance). Everything together amounts to very significant performance upgrade, from smaller signal path, top of the line smd jfets, best smd film caps, large filter caps, to board design..
Selling this so i can finance the same project, but as buffer boards for my purifi 1et400a amp, somewhat like atm audio.
Price is 250€ + shipping
Selling this so i can finance the same project, but as buffer boards for my purifi 1et400a amp, somewhat like atm audio.
Price is 250€ + shipping
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Few PM's about gerber files, so i'll write it publicly here. So far i haven't released them.
Thanks 🙂 Sounds as good as it looks, hence my itch to nutube-ify my 1et400a amps and finally do a cnc case for it 😅