# Nelson Pass Amp Camp Preamp + Headphone Amp **URL:** \ **Category:** DIY Audio & Modifications\ **Created:** [June 19, 2025, 11:48am UTC](https://forum.headphones.com/t/nelson-pass-amp-camp-preamp-headphone-amp/25957 "2025-06-19T11:48:50Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ericrosenfield](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/ericrosenfield/32/29824_2.png) [@ericrosenfield](https://forum.headphones.com/u/ericrosenfield)\ **Post date:** [June 19, 2025, 11:48am UTC](https://forum.headphones.com/t/nelson-pass-amp-camp-preamp-headphone-amp/25957/1 "2025-06-19T11:48:50Z")
Hi all, made a video about my experience building an the Amp Camp Preamp + Headphone Amp designed by Nelson Pass, using it with various headphones, and comparing it to my Aune S17 Pro, including some distortion measurements and a visit from a monkey for some reason. [![](https://us1.discourse-cdn.com/flex016/uploads/headphones/original/3X/a/e/ae61cc2e1308e64568c30881ca0c7dd5fcb962ff.jpeg "Can I Build Solid State that Sounds Like Tubes?(DIY upgraded Nelson Pass Amp Camp Pre+Headphone Amp)") ](https://www.youtube.com/watch?v=NUDQspBObRQ) ---
**Author:** ![Bearcat\_Sandor](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/bearcat_sandor/32/60984_2.png) [@Bearcat\_Sandor](https://forum.headphones.com/u/Bearcat_Sandor)\ **Post date:** [June 25, 2025, 9:44pm UTC](https://forum.headphones.com/t/nelson-pass-amp-camp-preamp-headphone-amp/25957/2 "2025-06-25T21:44:35Z")
Given that ferrets are notoriously mischievous, how do you get the micro-ferrets to behave? ---
**Author:** ![ericrosenfield](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/ericrosenfield/32/29824_2.png) [@ericrosenfield](https://forum.headphones.com/u/ericrosenfield)\ **Post date:** [June 26, 2025, 1:11am UTC](https://forum.headphones.com/t/nelson-pass-amp-camp-preamp-headphone-amp/25957/3 "2025-06-26T01:11:10Z")
Plastic rolling pin, just like the monkey