503HTA - Hybrid tube Amp - Volume Knob
thingiverse
This is a custom knob designed for my Pi2 design 503HTA Hybrid tube amp; www.pi2design.com/store/p13/503HTA_-_Hybrid_Tube_Amp.html. The knob is carefully crafted to fit comfortably on the amp, without obstructing the adjacent attenuation switch. With a generous 20mm of depth, this knob provides ample surface area for your fingers to grip firmly. A large flat surface corresponds visually with the volume level. UPDATE: I've recently updated the design to version 2, which includes additional knurls on the outside and some rounded edges for improved functionality. UPDATE2: In the photo of the knob in use, you'll notice a Pi2 and USB WiFi adapter sitting next to it. The WiFi antenna positioned as shown can cause interference with the audio signal. However, simply rotating the antenna away from the system resolves this issue effectively.
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